Search (121 results, page 1 of 7)

  • × language_ss:"e"
  • × theme_ss:"Wissensrepräsentation"
  • × year_i:[2010 TO 2020}
  1. Zeng, Q.; Yu, M.; Yu, W.; Xiong, J.; Shi, Y.; Jiang, M.: Faceted hierarchy : a new graph type to organize scientific concepts and a construction method (2019) 0.19 
    0.18865895 = product of:
  0.56597686 = sum of:
    0.056597687 = product of:
      0.16979305 = sum of:
        0.16979305 = weight(_text_:3a in 400) [ClassicSimilarity], result of:
          0.16979305 = score(doc=400,freq=2.0), product of:
            0.30211318 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.035634913 = queryNorm
            0.56201804 = fieldWeight in 400, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.046875 = fieldNorm(doc=400)
      0.33333334 = coord(1/3)
    0.16979305 = weight(_text_:2f in 400) [ClassicSimilarity], result of:
      0.16979305 = score(doc=400,freq=2.0), product of:
        0.30211318 = queryWeight, product of:
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.035634913 = queryNorm
        0.56201804 = fieldWeight in 400, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.046875 = fieldNorm(doc=400)
    0.16979305 = weight(_text_:2f in 400) [ClassicSimilarity], result of:
      0.16979305 = score(doc=400,freq=2.0), product of:
        0.30211318 = queryWeight, product of:
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.035634913 = queryNorm
        0.56201804 = fieldWeight in 400, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.046875 = fieldNorm(doc=400)
    0.16979305 = weight(_text_:2f in 400) [ClassicSimilarity], result of:
      0.16979305 = score(doc=400,freq=2.0), product of:
        0.30211318 = queryWeight, product of:
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.035634913 = queryNorm
        0.56201804 = fieldWeight in 400, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.046875 = fieldNorm(doc=400)
  0.33333334 = coord(4/12)
    Content
    Vgl.: https%3A%2F%2Faclanthology.org%2FD19-5317.pdf&usg=AOvVaw0ZZFyq5wWTtNTvNkrvjlGA.
  2. Weller, K.: Knowledge representation in the Social Semantic Web (2010) 0.17 
    0.17490667 = product of:
  0.34981334 = sum of:
    0.06792628 = weight(_text_:tagging in 4515) [ClassicSimilarity], result of:
      0.06792628 = score(doc=4515,freq=4.0), product of:
        0.21038401 = queryWeight, product of:
          5.9038734 = idf(docFreq=327, maxDocs=44218)
          0.035634913 = queryNorm
        0.32286808 = fieldWeight in 4515, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          5.9038734 = idf(docFreq=327, maxDocs=44218)
          0.02734375 = fieldNorm(doc=4515)
    0.0790347 = weight(_text_:web in 4515) [ClassicSimilarity], result of:
      0.0790347 = score(doc=4515,freq=58.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.67960584 = fieldWeight in 4515, product of:
          7.615773 = tf(freq=58.0), with freq of:
            58.0 = termFreq=58.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.02734375 = fieldNorm(doc=4515)
    0.028790962 = weight(_text_:world in 4515) [ClassicSimilarity], result of:
      0.028790962 = score(doc=4515,freq=4.0), product of:
        0.13696888 = queryWeight, product of:
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.035634913 = queryNorm
        0.21020076 = fieldWeight in 4515, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.02734375 = fieldNorm(doc=4515)
    0.038257793 = weight(_text_:wide in 4515) [ClassicSimilarity], result of:
      0.038257793 = score(doc=4515,freq=4.0), product of:
        0.1578897 = queryWeight, product of:
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.035634913 = queryNorm
        0.2423071 = fieldWeight in 4515, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.02734375 = fieldNorm(doc=4515)
    0.0790347 = weight(_text_:web in 4515) [ClassicSimilarity], result of:
      0.0790347 = score(doc=4515,freq=58.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.67960584 = fieldWeight in 4515, product of:
          7.615773 = tf(freq=58.0), with freq of:
            58.0 = termFreq=58.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.02734375 = fieldNorm(doc=4515)
    0.05676889 = product of:
      0.11353778 = sum of:
        0.11353778 = weight(_text_:2.0 in 4515) [ClassicSimilarity], result of:
          0.11353778 = score(doc=4515,freq=12.0), product of:
            0.20667298 = queryWeight, product of:
              5.799733 = idf(docFreq=363, maxDocs=44218)
              0.035634913 = queryNorm
            0.54935956 = fieldWeight in 4515, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              5.799733 = idf(docFreq=363, maxDocs=44218)
              0.02734375 = fieldNorm(doc=4515)
      0.5 = coord(1/2)
  0.5 = coord(6/12)
    Abstract
    The main purpose of this book is to sum up the vital and highly topical research issue of knowledge representation on the Web and to discuss novel solutions by combining benefits of folksonomies and Web 2.0 approaches with ontologies and semantic technologies. This book contains an overview of knowledge representation approaches in past, present and future, introduction to ontologies, Web indexing and in first case the novel approaches of developing ontologies. This title combines aspects of knowledge representation for both the Semantic Web (ontologies) and the Web 2.0 (folksonomies). Currently there is no monographic book which provides a combined overview over these topics. focus on the topic of using knowledge representation methods for document indexing purposes. For this purpose, considerations from classical librarian interests in knowledge representation (thesauri, classification schemes etc.) are included, which are not part of most other books which have a stronger background in computer science.
    Footnote
    Rez. in: iwp 62(2011) H.4, S.205-206 (C. Carstens): "Welche Arten der Wissensrepräsentation existieren im Web, wie ausgeprägt sind semantische Strukturen in diesem Kontext, und wie können soziale Aktivitäten im Sinne des Web 2.0 zur Strukturierung von Wissen im Web beitragen? Diesen Fragen widmet sich Wellers Buch mit dem Titel Knowledge Representation in the Social Semantic Web. Der Begriff Social Semantic Web spielt einerseits auf die semantische Strukturierung von Daten im Sinne des Semantic Web an und deutet andererseits auf die zunehmend kollaborative Inhaltserstellung im Social Web hin. Weller greift die Entwicklungen in diesen beiden Bereichen auf und beleuchtet die Möglichkeiten und Herausforderungen, die aus der Kombination der Aktivitäten im Semantic Web und im Social Web entstehen. Der Fokus des Buches liegt dabei primär auf den konzeptuellen Herausforderungen, die sich in diesem Kontext ergeben. So strebt die originäre Vision des Semantic Web die Annotation aller Webinhalte mit ausdrucksstarken, hochformalisierten Ontologien an. Im Social Web hingegen werden große Mengen an Daten von Nutzern erstellt, die häufig mithilfe von unkontrollierten Tags in Folksonomies annotiert werden. Weller sieht in derartigen kollaborativ erstellten Inhalten und Annotationen großes Potenzial für die semantische Indexierung, eine wichtige Voraussetzung für das Retrieval im Web. Das Hauptinteresse des Buches besteht daher darin, eine Brücke zwischen den Wissensrepräsentations-Methoden im Social Web und im Semantic Web zu schlagen. Um dieser Fragestellung nachzugehen, gliedert sich das Buch in drei Teile. . . .
    Insgesamt besticht das Buch insbesondere durch seine breite Sichtweise, die Aktualität und die Fülle an Referenzen. Es ist somit sowohl als Überblickswerk geeignet, das umfassend über aktuelle Entwicklungen und Trends der Wissensrepräsentation im Semantic und Social Web informiert, als auch als Lektüre für Experten, für die es vor allem als kontextualisierte und sehr aktuelle Sammlung von Referenzen eine wertvolle Ressource darstellt." Weitere Rez. in: Journal of Documentation. 67(2011), no.5, S.896-899 (P. Rafferty)
    LCSH
    Semantic Web
    Object
    Web 2.0
    RSWK
    Semantic Web
    Social Tagging
    World Wide Web 2.0
    Subject
    Semantic Web
    Social Tagging
    World Wide Web 2.0
    Semantic Web
    Theme
    Semantic Web
  3. Xiong, C.: Knowledge based text representations for information retrieval (2016) 0.17 
    0.1726597 = product of:
  0.5179791 = sum of:
    0.037731793 = product of:
      0.113195375 = sum of:
        0.113195375 = weight(_text_:3a in 5820) [ClassicSimilarity], result of:
          0.113195375 = score(doc=5820,freq=2.0), product of:
            0.30211318 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.035634913 = queryNorm
            0.3746787 = fieldWeight in 5820, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.03125 = fieldNorm(doc=5820)
      0.33333334 = coord(1/3)
    0.16008243 = weight(_text_:2f in 5820) [ClassicSimilarity], result of:
      0.16008243 = score(doc=5820,freq=4.0), product of:
        0.30211318 = queryWeight, product of:
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.035634913 = queryNorm
        0.5298757 = fieldWeight in 5820, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.03125 = fieldNorm(doc=5820)
    0.16008243 = weight(_text_:2f in 5820) [ClassicSimilarity], result of:
      0.16008243 = score(doc=5820,freq=4.0), product of:
        0.30211318 = queryWeight, product of:
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.035634913 = queryNorm
        0.5298757 = fieldWeight in 5820, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.03125 = fieldNorm(doc=5820)
    0.16008243 = weight(_text_:2f in 5820) [ClassicSimilarity], result of:
      0.16008243 = score(doc=5820,freq=4.0), product of:
        0.30211318 = queryWeight, product of:
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.035634913 = queryNorm
        0.5298757 = fieldWeight in 5820, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.03125 = fieldNorm(doc=5820)
  0.33333334 = coord(4/12)
    Content
    Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Language and Information Technologies. Vgl.: https%3A%2F%2Fwww.cs.cmu.edu%2F~cx%2Fpapers%2Fknowledge_based_text_representation.pdf&usg=AOvVaw0SaTSvhWLTh__Uz_HtOtl3.
  4. ¬The Semantic Web - ISWC 2010 : 9th International Semantic Web Conference, ISWC 2010, Shanghai, China, November 7-11, 2010, Revised Selected Papers, Part 2. (2010) 0.14 
    0.13948539 = product of:
  0.33476496 = sum of:
    0.096079424 = weight(_text_:web in 4706) [ClassicSimilarity], result of:
      0.096079424 = score(doc=4706,freq=42.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.8261705 = fieldWeight in 4706, product of:
          6.4807405 = tf(freq=42.0), with freq of:
            42.0 = termFreq=42.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4706)
    0.041129943 = weight(_text_:world in 4706) [ClassicSimilarity], result of:
      0.041129943 = score(doc=4706,freq=4.0), product of:
        0.13696888 = queryWeight, product of:
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.035634913 = queryNorm
        0.30028677 = fieldWeight in 4706, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4706)
    0.054653995 = weight(_text_:wide in 4706) [ClassicSimilarity], result of:
      0.054653995 = score(doc=4706,freq=4.0), product of:
        0.1578897 = queryWeight, product of:
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.035634913 = queryNorm
        0.34615302 = fieldWeight in 4706, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4706)
    0.096079424 = weight(_text_:web in 4706) [ClassicSimilarity], result of:
      0.096079424 = score(doc=4706,freq=42.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.8261705 = fieldWeight in 4706, product of:
          6.4807405 = tf(freq=42.0), with freq of:
            42.0 = termFreq=42.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4706)
    0.04682219 = product of:
      0.09364438 = sum of:
        0.09364438 = weight(_text_:2.0 in 4706) [ClassicSimilarity], result of:
          0.09364438 = score(doc=4706,freq=4.0), product of:
            0.20667298 = queryWeight, product of:
              5.799733 = idf(docFreq=363, maxDocs=44218)
              0.035634913 = queryNorm
            0.45310414 = fieldWeight in 4706, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.799733 = idf(docFreq=363, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4706)
      0.5 = coord(1/2)
  0.41666666 = coord(5/12)
    Abstract
    The two-volume set LNCS 6496 and 6497 constitutes the refereed proceedings of the 9th International Semantic Web Conference, ISWC 2010, held in Shanghai, China, during November 7-11, 2010. Part I contains 51 papers out of 578 submissions to the research track. Part II contains 18 papers out of 66 submissions to the semantic Web in-use track, 6 papers out of 26 submissions to the doctoral consortium track, and also 4 invited talks. Each submitted paper were carefully reviewed. The International Semantic Web Conferences (ISWC) constitute the major international venue where the latest research results and technical innovations on all aspects of the Semantic Web are presented. ISWC brings together researchers, practitioners, and users from the areas of artificial intelligence, databases, social networks, distributed computing, Web engineering, information systems, natural language processing, soft computing, and human computer interaction to discuss the major challenges and proposed solutions, the success stories and failures, as well the visions that can advance research and drive innovation in the Semantic Web.
    RSWK
    Semantic Web / Kongress / Schanghai <2010>
    Semantic Web / Ontologie <Wissensverarbeitung> / Kongress / Schanghai <2010>
    Semantic Web / Datenverwaltung / Wissensmanagement / Kongress / Schanghai <2010>
    Semantic Web / Anwendungssystem / Kongress / Schanghai <2010>
    Semantic Web / World Wide Web 2.0 / Kongress / Schanghai <2010>
    Subject
    Semantic Web / Kongress / Schanghai <2010>
    Semantic Web / Ontologie <Wissensverarbeitung> / Kongress / Schanghai <2010>
    Semantic Web / Datenverwaltung / Wissensmanagement / Kongress / Schanghai <2010>
    Semantic Web / Anwendungssystem / Kongress / Schanghai <2010>
    Semantic Web / World Wide Web 2.0 / Kongress / Schanghai <2010>
    Theme
    Semantic Web
  5. ¬The Semantic Web - ISWC 2010 : 9th International Semantic Web Conference, ISWC 2010, Shanghai, China, November 7-11, 2010, Revised Selected Papers, Part I. (2010) 0.11 
    0.11158832 = product of:
  0.26781198 = sum of:
    0.07686354 = weight(_text_:web in 4707) [ClassicSimilarity], result of:
      0.07686354 = score(doc=4707,freq=42.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.6609364 = fieldWeight in 4707, product of:
          6.4807405 = tf(freq=42.0), with freq of:
            42.0 = termFreq=42.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03125 = fieldNorm(doc=4707)
    0.032903954 = weight(_text_:world in 4707) [ClassicSimilarity], result of:
      0.032903954 = score(doc=4707,freq=4.0), product of:
        0.13696888 = queryWeight, product of:
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.035634913 = queryNorm
        0.24022943 = fieldWeight in 4707, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.03125 = fieldNorm(doc=4707)
    0.043723192 = weight(_text_:wide in 4707) [ClassicSimilarity], result of:
      0.043723192 = score(doc=4707,freq=4.0), product of:
        0.1578897 = queryWeight, product of:
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.035634913 = queryNorm
        0.2769224 = fieldWeight in 4707, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.03125 = fieldNorm(doc=4707)
    0.07686354 = weight(_text_:web in 4707) [ClassicSimilarity], result of:
      0.07686354 = score(doc=4707,freq=42.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.6609364 = fieldWeight in 4707, product of:
          6.4807405 = tf(freq=42.0), with freq of:
            42.0 = termFreq=42.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03125 = fieldNorm(doc=4707)
    0.037457753 = product of:
      0.074915506 = sum of:
        0.074915506 = weight(_text_:2.0 in 4707) [ClassicSimilarity], result of:
          0.074915506 = score(doc=4707,freq=4.0), product of:
            0.20667298 = queryWeight, product of:
              5.799733 = idf(docFreq=363, maxDocs=44218)
              0.035634913 = queryNorm
            0.36248332 = fieldWeight in 4707, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.799733 = idf(docFreq=363, maxDocs=44218)
              0.03125 = fieldNorm(doc=4707)
      0.5 = coord(1/2)
  0.41666666 = coord(5/12)
    Abstract
    The two-volume set LNCS 6496 and 6497 constitutes the refereed proceedings of the 9th International Semantic Web Conference, ISWC 2010, held in Shanghai, China, during November 7-11, 2010. Part I contains 51 papers out of 578 submissions to the research track. Part II contains 18 papers out of 66 submissions to the semantic Web in-use track, 6 papers out of 26 submissions to the doctoral consortium track, and also 4 invited talks. Each submitted paper were carefully reviewed. The International Semantic Web Conferences (ISWC) constitute the major international venue where the latest research results and technical innovations on all aspects of the Semantic Web are presented. ISWC brings together researchers, practitioners, and users from the areas of artificial intelligence, databases, social networks, distributed computing, Web engineering, information systems, natural language processing, soft computing, and human computer interaction to discuss the major challenges and proposed solutions, the success stories and failures, as well the visions that can advance research and drive innovation in the Semantic Web.
    RSWK
    Semantic Web / Kongress / Schanghai <2010>
    Semantic Web / Ontologie <Wissensverarbeitung> / Kongress / Schanghai <2010>
    Semantic Web / Datenverwaltung / Wissensmanagement / Kongress / Schanghai <2010>
    Semantic Web / Anwendungssystem / Kongress / Schanghai <2010>
    Semantic Web / World Wide Web 2.0 / Kongress / Schanghai <2010>
    Subject
    Semantic Web / Kongress / Schanghai <2010>
    Semantic Web / Ontologie <Wissensverarbeitung> / Kongress / Schanghai <2010>
    Semantic Web / Datenverwaltung / Wissensmanagement / Kongress / Schanghai <2010>
    Semantic Web / Anwendungssystem / Kongress / Schanghai <2010>
    Semantic Web / World Wide Web 2.0 / Kongress / Schanghai <2010>
    Theme
    Semantic Web
  6. Gödert, W.; Hubrich, J.; Nagelschmidt, M.: Semantic knowledge representation for information retrieval (2014) 0.11 
    0.1093985 = product of:
  0.2625564 = sum of:
    0.06656578 = weight(_text_:web in 987) [ClassicSimilarity], result of:
      0.06656578 = score(doc=987,freq=14.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.57238775 = fieldWeight in 987, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=987)
    0.049355935 = weight(_text_:world in 987) [ClassicSimilarity], result of:
      0.049355935 = score(doc=987,freq=4.0), product of:
        0.13696888 = queryWeight, product of:
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.035634913 = queryNorm
        0.36034414 = fieldWeight in 987, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.046875 = fieldNorm(doc=987)
    0.06558479 = weight(_text_:wide in 987) [ClassicSimilarity], result of:
      0.06558479 = score(doc=987,freq=4.0), product of:
        0.1578897 = queryWeight, product of:
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.035634913 = queryNorm
        0.4153836 = fieldWeight in 987, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.046875 = fieldNorm(doc=987)
    0.06656578 = weight(_text_:web in 987) [ClassicSimilarity], result of:
      0.06656578 = score(doc=987,freq=14.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.57238775 = fieldWeight in 987, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=987)
    0.014484116 = product of:
      0.028968232 = sum of:
        0.028968232 = weight(_text_:22 in 987) [ClassicSimilarity], result of:
          0.028968232 = score(doc=987,freq=2.0), product of:
            0.12478739 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.035634913 = queryNorm
            0.23214069 = fieldWeight in 987, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=987)
      0.5 = coord(1/2)
  0.41666666 = coord(5/12)
    Abstract
    This book covers the basics of semantic web technologies and indexing languages, and describes their contribution to improve languages as a tool for subject queries and knowledge exploration. The book is relevant to information scientists, knowledge workers and indexers. It provides a suitable combination of theoretical foundations and practical applications.
    Date
    23. 7.2017 13:49:22
    LCSH
    Semantic Web
    World Wide Web / Subject access
    RSWK
    Semantic Web
    Subject
    Semantic Web
    World Wide Web / Subject access
    Semantic Web
  7. Mahesh, K.: Highly expressive tagging for knowledge organization in the 21st century (2014) 0.06 
    0.060578953 = product of:
  0.18173686 = sum of:
    0.09703755 = weight(_text_:tagging in 1434) [ClassicSimilarity], result of:
      0.09703755 = score(doc=1434,freq=4.0), product of:
        0.21038401 = queryWeight, product of:
          5.9038734 = idf(docFreq=327, maxDocs=44218)
          0.035634913 = queryNorm
        0.4612401 = fieldWeight in 1434, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          5.9038734 = idf(docFreq=327, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1434)
    0.03631461 = weight(_text_:web in 1434) [ClassicSimilarity], result of:
      0.03631461 = score(doc=1434,freq=6.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.3122631 = fieldWeight in 1434, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1434)
    0.03631461 = weight(_text_:web in 1434) [ClassicSimilarity], result of:
      0.03631461 = score(doc=1434,freq=6.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.3122631 = fieldWeight in 1434, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1434)
    0.012070097 = product of:
      0.024140194 = sum of:
        0.024140194 = weight(_text_:22 in 1434) [ClassicSimilarity], result of:
          0.024140194 = score(doc=1434,freq=2.0), product of:
            0.12478739 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.035634913 = queryNorm
            0.19345059 = fieldWeight in 1434, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1434)
      0.5 = coord(1/2)
  0.33333334 = coord(4/12)
    Abstract
    Knowledge organization of large-scale content on the Web requires substantial amounts of semantic metadata that is expensive to generate manually. Recent developments in Web technologies have enabled any user to tag documents and other forms of content thereby generating metadata that could help organize knowledge. However, merely adding one or more tags to a document is highly inadequate to capture the aboutness of the document and thereby to support powerful semantic functions such as automatic classification, question answering or true semantic search and retrieval. This is true even when the tags used are labels from a well-designed classification system such as a thesaurus or taxonomy. There is a strong need to develop a semantic tagging mechanism with sufficient expressive power to capture the aboutness of each part of a document or dataset or multimedia content in order to enable applications that can benefit from knowledge organization on the Web. This article proposes a highly expressive mechanism of using ontology snippets as semantic tags that map portions of a document or a part of a dataset or a segment of a multimedia content to concepts and relations in an ontology of the domain(s) of interest.
    Source
    Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik
  8. Zhitomirsky-Geffet, M.; Bar-Ilan, J.: Towards maximal unification of semantically diverse ontologies for controversial domains (2014) 0.06 
    0.059544567 = product of:
  0.14290696 = sum of:
    0.054892723 = weight(_text_:tagging in 1634) [ClassicSimilarity], result of:
      0.054892723 = score(doc=1634,freq=2.0), product of:
        0.21038401 = queryWeight, product of:
          5.9038734 = idf(docFreq=327, maxDocs=44218)
          0.035634913 = queryNorm
        0.2609168 = fieldWeight in 1634, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.9038734 = idf(docFreq=327, maxDocs=44218)
          0.03125 = fieldNorm(doc=1634)
    0.023720603 = weight(_text_:web in 1634) [ClassicSimilarity], result of:
      0.023720603 = score(doc=1634,freq=4.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.2039694 = fieldWeight in 1634, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03125 = fieldNorm(doc=1634)
    0.030916965 = weight(_text_:wide in 1634) [ClassicSimilarity], result of:
      0.030916965 = score(doc=1634,freq=2.0), product of:
        0.1578897 = queryWeight, product of:
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.035634913 = queryNorm
        0.1958137 = fieldWeight in 1634, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.03125 = fieldNorm(doc=1634)
    0.023720603 = weight(_text_:web in 1634) [ClassicSimilarity], result of:
      0.023720603 = score(doc=1634,freq=4.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.2039694 = fieldWeight in 1634, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03125 = fieldNorm(doc=1634)
    0.009656077 = product of:
      0.019312155 = sum of:
        0.019312155 = weight(_text_:22 in 1634) [ClassicSimilarity], result of:
          0.019312155 = score(doc=1634,freq=2.0), product of:
            0.12478739 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.035634913 = queryNorm
            0.15476047 = fieldWeight in 1634, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03125 = fieldNorm(doc=1634)
      0.5 = coord(1/2)
  0.41666666 = coord(5/12)
    Abstract
    Purpose - Ontologies are prone to wide semantic variability due to subjective points of view of their composers. The purpose of this paper is to propose a new approach for maximal unification of diverse ontologies for controversial domains by their relations. Design/methodology/approach - Effective matching or unification of multiple ontologies for a specific domain is crucial for the success of many semantic web applications, such as semantic information retrieval and organization, document tagging, summarization and search. To this end, numerous automatic and semi-automatic techniques were proposed in the past decade that attempt to identify similar entities, mostly classes, in diverse ontologies for similar domains. Apparently, matching individual entities cannot result in full integration of ontologies' semantics without matching their inter-relations with all other-related classes (and instances). However, semantic matching of ontological relations still constitutes a major research challenge. Therefore, in this paper the authors propose a new paradigm for assessment of maximal possible matching and unification of ontological relations. To this end, several unification rules for ontological relations were devised based on ontological reference rules, and lexical and textual entailment. These rules were semi-automatically implemented to extend a given ontology with semantically matching relations from another ontology for a similar domain. Then, the ontologies were unified through these similar pairs of relations. The authors observe that these rules can be also facilitated to reveal the contradictory relations in different ontologies. Findings - To assess the feasibility of the approach two experiments were conducted with different sets of multiple personal ontologies on controversial domains constructed by trained subjects. The results for about 50 distinct ontology pairs demonstrate a good potential of the methodology for increasing inter-ontology agreement. Furthermore, the authors show that the presented methodology can lead to a complete unification of multiple semantically heterogeneous ontologies. Research limitations/implications - This is a conceptual study that presents a new approach for semantic unification of ontologies by a devised set of rules along with the initial experimental evidence of its feasibility and effectiveness. However, this methodology has to be fully automatically implemented and tested on a larger dataset in future research. Practical implications - This result has implication for semantic search, since a richer ontology, comprised of multiple aspects and viewpoints of the domain of knowledge, enhances discoverability and improves search results. Originality/value - To the best of the knowledge, this is the first study to examine and assess the maximal level of semantic relation-based ontology unification.
    Date
    20. 1.2015 18:30:22
    Theme
    Semantic Web
  9. Menzel, C.: Knowledge representation, the World Wide Web, and the evolution of logic (2011) 0.06 
    0.056143478 = product of:
  0.16843043 = sum of:
    0.043577533 = weight(_text_:web in 761) [ClassicSimilarity], result of:
      0.043577533 = score(doc=761,freq=6.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.37471575 = fieldWeight in 761, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=761)
    0.034899916 = weight(_text_:world in 761) [ClassicSimilarity], result of:
      0.034899916 = score(doc=761,freq=2.0), product of:
        0.13696888 = queryWeight, product of:
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.035634913 = queryNorm
        0.25480178 = fieldWeight in 761, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.046875 = fieldNorm(doc=761)
    0.046375446 = weight(_text_:wide in 761) [ClassicSimilarity], result of:
      0.046375446 = score(doc=761,freq=2.0), product of:
        0.1578897 = queryWeight, product of:
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.035634913 = queryNorm
        0.29372054 = fieldWeight in 761, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.046875 = fieldNorm(doc=761)
    0.043577533 = weight(_text_:web in 761) [ClassicSimilarity], result of:
      0.043577533 = score(doc=761,freq=6.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.37471575 = fieldWeight in 761, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=761)
  0.33333334 = coord(4/12)
    Abstract
    In this paper, I have traced a series of evolutionary adaptations of FOL motivated entirely by its use by knowledge engineers to represent and share information on the Web culminating in the development of Common Logic. While the primary goal in this paper has been to document this evolution, it is arguable, I think that CL's syntactic and semantic egalitarianism better realizes the goal "topic neutrality" that a logic should ideally exemplify - understood, at least in part, as the idea that logic should as far as possible not itself embody any metaphysical presuppositions. Instead of retaining the traditional metaphysical divisions of FOL that reflect its Fregean origins, CL begins as it were with a single, metaphysically homogeneous domain in which, potentially, anything can play the traditional roles of object, property, relation, and function. Note that the effect of this is not to destroy traditional metaphysical divisions. Rather, it simply to refrain from building those divisions explicitly into one's logic; instead, such divisions are left to the user to introduce and enforce axiomatically in an explicit metaphysical theory.
    Theme
    Semantic Web
  10. Reasoning Web : Semantic Interoperability on the Web, 13th International Summer School 2017, London, UK, July 7-11, 2017, Tutorial Lectures (2017) 0.05 
    0.054981086 = product of:
  0.21992435 = sum of:
    0.06953719 = weight(_text_:web in 3934) [ClassicSimilarity], result of:
      0.06953719 = score(doc=3934,freq=22.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.59793836 = fieldWeight in 3934, product of:
          4.690416 = tf(freq=22.0), with freq of:
            22.0 = termFreq=22.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3934)
    0.08084996 = weight(_text_:log in 3934) [ClassicSimilarity], result of:
      0.08084996 = score(doc=3934,freq=2.0), product of:
        0.22837062 = queryWeight, product of:
          6.4086204 = idf(docFreq=197, maxDocs=44218)
          0.035634913 = queryNorm
        0.3540296 = fieldWeight in 3934, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          6.4086204 = idf(docFreq=197, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3934)
    0.06953719 = weight(_text_:web in 3934) [ClassicSimilarity], result of:
      0.06953719 = score(doc=3934,freq=22.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.59793836 = fieldWeight in 3934, product of:
          4.690416 = tf(freq=22.0), with freq of:
            22.0 = termFreq=22.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3934)
  0.25 = coord(3/12)
    Abstract
    This volume contains the lecture notes of the 13th Reasoning Web Summer School, RW 2017, held in London, UK, in July 2017. In 2017, the theme of the school was "Semantic Interoperability on the Web", which encompasses subjects such as data integration, open data management, reasoning over linked data, database to ontology mapping, query answering over ontologies, hybrid reasoning with rules and ontologies, and ontology-based dynamic systems. The papers of this volume focus on these topics and also address foundational reasoning techniques used in answer set programming and ontologies.
    Content
    Neumaier, Sebastian (et al.): Data Integration for Open Data on the Web - Stamou, Giorgos (et al.): Ontological Query Answering over Semantic Data - Calì, Andrea: Ontology Querying: Datalog Strikes Back - Sequeda, Juan F.: Integrating Relational Databases with the Semantic Web: A Reflection - Rousset, Marie-Christine (et al.): Datalog Revisited for Reasoning in Linked Data - Kaminski, Roland (et al.): A Tutorial on Hybrid Answer Set Solving with clingo - Eiter, Thomas (et al.): Answer Set Programming with External Source Access - Lukasiewicz, Thomas: Uncertainty Reasoning for the Semantic Web - Calvanese, Diego (et al.): OBDA for Log Extraction in Process Mining
    RSWK
    Ontologie <Wissensverarbeitung> / Semantic Web
    Series
    Lecture Notes in Computer Scienc;10370 )(Information Systems and Applications, incl. Internet/Web, and HCI
    Subject
    Ontologie <Wissensverarbeitung> / Semantic Web
    Theme
    Semantic Web
  11. Atanassova, I.; Bertin, M.: Semantic facets for scientific information retrieval (2014) 0.05 
    0.0483155 = product of:
  0.193262 = sum of:
    0.13455649 = weight(_text_:filter in 4471) [ClassicSimilarity], result of:
      0.13455649 = score(doc=4471,freq=2.0), product of:
        0.24899386 = queryWeight, product of:
          6.987357 = idf(docFreq=110, maxDocs=44218)
          0.035634913 = queryNorm
        0.5404008 = fieldWeight in 4471, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          6.987357 = idf(docFreq=110, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4471)
    0.02935275 = weight(_text_:web in 4471) [ClassicSimilarity], result of:
      0.02935275 = score(doc=4471,freq=2.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.25239927 = fieldWeight in 4471, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4471)
    0.02935275 = weight(_text_:web in 4471) [ClassicSimilarity], result of:
      0.02935275 = score(doc=4471,freq=2.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.25239927 = fieldWeight in 4471, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4471)
  0.25 = coord(3/12)
    Abstract
    We present an Information Retrieval System for scientific publications that provides the possibility to filter results according to semantic facets. We use sentence-level semantic annotations that identify specific semantic relations in texts, such as methods, definitions, hypotheses, that correspond to common information needs related to scientific literature. The semantic annotations are obtained using a rule-based method that identifies linguistic clues organized into a linguistic ontology. The system is implemented using Solr Search Server and offers efficient search and navigation in scientific papers.
    Source
    Semantic Web Evaluation Challenge. SemWebEval 2014 at ESWC 2014, Anissaras, Crete, Greece, May 25-29, 2014, Revised Selected Papers. Eds.: V. Presutti et al
  12. Fernández, M.; Cantador, I.; López, V.; Vallet, D.; Castells, P.; Motta, E.: Semantically enhanced Information Retrieval : an ontology-based approach (2011) 0.05 
    0.04733365 = product of:
  0.14200094 = sum of:
    0.03750557 = weight(_text_:web in 230) [ClassicSimilarity], result of:
      0.03750557 = score(doc=230,freq=10.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.32250395 = fieldWeight in 230, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03125 = fieldNorm(doc=230)
    0.02326661 = weight(_text_:world in 230) [ClassicSimilarity], result of:
      0.02326661 = score(doc=230,freq=2.0), product of:
        0.13696888 = queryWeight, product of:
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.035634913 = queryNorm
        0.16986786 = fieldWeight in 230, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.03125 = fieldNorm(doc=230)
    0.043723192 = weight(_text_:wide in 230) [ClassicSimilarity], result of:
      0.043723192 = score(doc=230,freq=4.0), product of:
        0.1578897 = queryWeight, product of:
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.035634913 = queryNorm
        0.2769224 = fieldWeight in 230, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.03125 = fieldNorm(doc=230)
    0.03750557 = weight(_text_:web in 230) [ClassicSimilarity], result of:
      0.03750557 = score(doc=230,freq=10.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.32250395 = fieldWeight in 230, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03125 = fieldNorm(doc=230)
  0.33333334 = coord(4/12)
    Abstract
    Currently, techniques for content description and query processing in Information Retrieval (IR) are based on keywords, and therefore provide limited capabilities to capture the conceptualizations associated with user needs and contents. Aiming to solve the limitations of keyword-based models, the idea of conceptual search, understood as searching by meanings rather than literal strings, has been the focus of a wide body of research in the IR field. More recently, it has been used as a prototypical scenario (or even envisioned as a potential "killer app") in the Semantic Web (SW) vision, since its emergence in the late nineties. However, current approaches to semantic search developed in the SW area have not yet taken full advantage of the acquired knowledge, accumulated experience, and technological sophistication achieved through several decades of work in the IR field. Starting from this position, this work investigates the definition of an ontology-based IR model, oriented to the exploitation of domain Knowledge Bases to support semantic search capabilities in large document repositories, stressing on the one hand the use of fully fledged ontologies in the semantic-based perspective, and on the other hand the consideration of unstructured content as the target search space. The major contribution of this work is an innovative, comprehensive semantic search model, which extends the classic IR model, addresses the challenges of the massive and heterogeneous Web environment, and integrates the benefits of both keyword and semantic-based search. Additional contributions include: an innovative rank fusion technique that minimizes the undesired effects of knowledge sparseness on the yet juvenile SW, and the creation of a large-scale evaluation benchmark, based on TREC IR evaluation standards, which allows a rigorous comparison between IR and SW approaches. Conducted experiments show that our semantic search model obtained comparable and better performance results (in terms of MAP and P@10 values) than the best TREC automatic system.
    Source
    Web semantics: science, services and agents on the World Wide Web. 9(2011) no.4, S.434-452
    Theme
    Semantic Web
  13. Wright, H.: Semantic Web and ontologies (2018) 0.05 
    0.046343543 = product of:
  0.18537417 = sum of:
    0.06563474 = weight(_text_:web in 80) [ClassicSimilarity], result of:
      0.06563474 = score(doc=80,freq=10.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.5643819 = fieldWeight in 80, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0546875 = fieldNorm(doc=80)
    0.05410469 = weight(_text_:wide in 80) [ClassicSimilarity], result of:
      0.05410469 = score(doc=80,freq=2.0), product of:
        0.1578897 = queryWeight, product of:
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.035634913 = queryNorm
        0.342674 = fieldWeight in 80, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.0546875 = fieldNorm(doc=80)
    0.06563474 = weight(_text_:web in 80) [ClassicSimilarity], result of:
      0.06563474 = score(doc=80,freq=10.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.5643819 = fieldWeight in 80, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0546875 = fieldNorm(doc=80)
  0.25 = coord(3/12)
    Abstract
    The Semantic Web and ontologies can help archaeologists combine and share data, making it more open and useful. Archaeologists create diverse types of data, using a wide variety of technologies and methodologies. Like all research domains, these data are increasingly digital. The creation of data that are now openly and persistently available from disparate sources has also inspired efforts to bring archaeological resources together and make them more interoperable. This allows functionality such as federated cross-search across different datasets, and the mapping of heterogeneous data to authoritative structures to build a single data source. Ontologies provide the structure and relationships for Semantic Web data, and have been developed for use in cultural heritage applications generally, and archaeology specifically. A variety of online resources for archaeology now incorporate Semantic Web principles and technologies.
    Theme
    Semantic Web
  14. Hitzler, P.; Janowicz, K.: Ontologies in a data driven world : finding the middle ground (2013) 0.04 
    0.042609457 = product of:
  0.17043783 = sum of:
    0.050318997 = weight(_text_:web in 803) [ClassicSimilarity], result of:
      0.050318997 = score(doc=803,freq=2.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.43268442 = fieldWeight in 803, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.09375 = fieldNorm(doc=803)
    0.06979983 = weight(_text_:world in 803) [ClassicSimilarity], result of:
      0.06979983 = score(doc=803,freq=2.0), product of:
        0.13696888 = queryWeight, product of:
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.035634913 = queryNorm
        0.50960356 = fieldWeight in 803, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.09375 = fieldNorm(doc=803)
    0.050318997 = weight(_text_:web in 803) [ClassicSimilarity], result of:
      0.050318997 = score(doc=803,freq=2.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.43268442 = fieldWeight in 803, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.09375 = fieldNorm(doc=803)
  0.25 = coord(3/12)
    Theme
    Semantic Web
  15. Smith, D.A.; Shadbolt, N.R.: FacetOntology : expressive descriptions of facets in the Semantic Web (2012) 0.04 
    0.042185247 = product of:
  0.16874099 = sum of:
    0.096111774 = weight(_text_:filter in 2208) [ClassicSimilarity], result of:
      0.096111774 = score(doc=2208,freq=2.0), product of:
        0.24899386 = queryWeight, product of:
          6.987357 = idf(docFreq=110, maxDocs=44218)
          0.035634913 = queryNorm
        0.38600057 = fieldWeight in 2208, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          6.987357 = idf(docFreq=110, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2208)
    0.03631461 = weight(_text_:web in 2208) [ClassicSimilarity], result of:
      0.03631461 = score(doc=2208,freq=6.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.3122631 = fieldWeight in 2208, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2208)
    0.03631461 = weight(_text_:web in 2208) [ClassicSimilarity], result of:
      0.03631461 = score(doc=2208,freq=6.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.3122631 = fieldWeight in 2208, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2208)
  0.25 = coord(3/12)
    Abstract
    The formal structure of the information on the Semantic Web lends itself to faceted browsing, an information retrieval method where users can filter results based on the values of properties ("facets"). Numerous faceted browsers have been created to browse RDF and Linked Data, but these systems use their own ontologies for defining how data is queried to populate their facets. Since the source data is the same format across these systems (specifically, RDF), we can unify the different methods of describing how to quer the underlying data, to enable compatibility across systems, and provide an extensible base ontology for future systems. To this end, we present FacetOntology, an ontology that defines how to query data to form a faceted browser, and a number of transformations and filters that can be applied to data before it is shown to users. FacetOntology overcomes limitations in the expressivity of existing work, by enabling the full expressivity of SPARQL when selecting data for facets. By applying a FacetOntology definition to data, a set of facets are specified, each with queries and filters to source RDF data, which enables faceted browsing systems to be created using that RDF data.
    Theme
    Semantic Web
  16. Hollink, L.; Assem, M. van: Estimating the relevance of search results in the Culture-Web : a study of semantic distance measures (2010) 0.04 
    0.041360278 = product of:
  0.16544111 = sum of:
    0.075478494 = weight(_text_:web in 4649) [ClassicSimilarity], result of:
      0.075478494 = score(doc=4649,freq=18.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.64902663 = fieldWeight in 4649, product of:
          4.2426405 = tf(freq=18.0), with freq of:
            18.0 = termFreq=18.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=4649)
    0.075478494 = weight(_text_:web in 4649) [ClassicSimilarity], result of:
      0.075478494 = score(doc=4649,freq=18.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.64902663 = fieldWeight in 4649, product of:
          4.2426405 = tf(freq=18.0), with freq of:
            18.0 = termFreq=18.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=4649)
    0.014484116 = product of:
      0.028968232 = sum of:
        0.028968232 = weight(_text_:22 in 4649) [ClassicSimilarity], result of:
          0.028968232 = score(doc=4649,freq=2.0), product of:
            0.12478739 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.035634913 = queryNorm
            0.23214069 = fieldWeight in 4649, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=4649)
      0.5 = coord(1/2)
  0.25 = coord(3/12)
    Abstract
    More and more cultural heritage institutions publish their collections, vocabularies and metadata on the Web. The resulting Web of linked cultural data opens up exciting new possibilities for searching and browsing through these cultural heritage collections. We report on ongoing work in which we investigate the estimation of relevance in this Web of Culture. We study existing measures of semantic distance and how they apply to two use cases. The use cases relate to the structured, multilingual and multimodal nature of the Culture Web. We distinguish between measures using the Web, such as Google distance and PMI, and measures using the Linked Data Web, i.e. the semantic structure of metadata vocabularies. We perform a small study in which we compare these semantic distance measures to human judgements of relevance. Although it is too early to draw any definitive conclusions, the study provides new insights into the applicability of semantic distance measures to the Web of Culture, and clear starting points for further research.
    Date
    26.12.2011 13:40:22
    Theme
    Semantic Web
  17. Glimm, B.; Hogan, A.; Krötzsch, M.; Polleres, A.: OWL: Yet to arrive on the Web of Data? (2012) 0.04 
    0.03953895 = product of:
  0.1581558 = sum of:
    0.06162794 = weight(_text_:web in 4798) [ClassicSimilarity], result of:
      0.06162794 = score(doc=4798,freq=12.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.5299281 = fieldWeight in 4798, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=4798)
    0.034899916 = weight(_text_:world in 4798) [ClassicSimilarity], result of:
      0.034899916 = score(doc=4798,freq=2.0), product of:
        0.13696888 = queryWeight, product of:
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.035634913 = queryNorm
        0.25480178 = fieldWeight in 4798, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.046875 = fieldNorm(doc=4798)
    0.06162794 = weight(_text_:web in 4798) [ClassicSimilarity], result of:
      0.06162794 = score(doc=4798,freq=12.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.5299281 = fieldWeight in 4798, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=4798)
  0.25 = coord(3/12)
    Abstract
    Seven years on from OWL becoming a W3C recommendation, and two years on from the more recent OWL 2 W3C recommendation, OWL has still experienced only patchy uptake on the Web. Although certain OWL features (like owl:sameAs) are very popular, other features of OWL are largely neglected by publishers in the Linked Data world. This may suggest that despite the promise of easy implementations and the proposal of tractable profiles suggested in OWL's second version, there is still no "right" standard fragment for the Linked Data community. In this paper, we (1) analyse uptake of OWL on the Web of Data, (2) gain insights into the OWL fragment that is actually used/usable on the Web, where we arrive at the conclusion that this fragment is likely to be a simplified profile based on OWL RL, (3) propose and discuss such a new fragment, which we call OWL LD (for Linked Data).
    Content
    Beitrag des Workshops: Linked Data on the Web (LDOW2012), April 16, 2012 Lyon, France; vgl.: http://events.linkeddata.org/ldow2012/.
    Theme
    Semantic Web
  18. Stock, W.G.: Concepts and semantic relations in information science (2010) 0.04 
    0.03531128 = product of:
  0.14124513 = sum of:
    0.068615906 = weight(_text_:tagging in 4008) [ClassicSimilarity], result of:
      0.068615906 = score(doc=4008,freq=2.0), product of:
        0.21038401 = queryWeight, product of:
          5.9038734 = idf(docFreq=327, maxDocs=44218)
          0.035634913 = queryNorm
        0.326146 = fieldWeight in 4008, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.9038734 = idf(docFreq=327, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4008)
    0.03631461 = weight(_text_:web in 4008) [ClassicSimilarity], result of:
      0.03631461 = score(doc=4008,freq=6.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.3122631 = fieldWeight in 4008, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4008)
    0.03631461 = weight(_text_:web in 4008) [ClassicSimilarity], result of:
      0.03631461 = score(doc=4008,freq=6.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.3122631 = fieldWeight in 4008, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4008)
  0.25 = coord(3/12)
    Abstract
    Concept-based information retrieval and knowledge representation are in need of a theory of concepts and semantic relations. Guidelines for the construction and maintenance of knowledge organization systems (KOS) (such as ANSI/NISO Z39.19-2005 in the U.S.A. or DIN 2331:1980 in Germany) do not consider results of concept theory and theory of relations to the full extent. They are not able to unify the currently different worlds of traditional controlled vocabularies, of the social web (tagging and folksonomies) and of the semantic web (ontologies). Concept definitions as well as semantic relations are based on epistemological theories (empiricism, rationalism, hermeneutics, pragmatism, and critical theory). A concept is determined via its intension and extension as well as by definition. We will meet the problem of vagueness by introducing prototypes. Some important definitions are concept explanations (after Aristotle) and the definition of family resemblances (in the sense of Wittgenstein). We will model concepts as frames (according to Barsalou). The most important paradigmatic relation in KOS is hierarchy, which must be arranged into different classes: Hyponymy consists of taxonomy and simple hyponymy, meronymy consists of many different part-whole-relations. For practical application purposes, the transitivity of the given relation is very important. Unspecific associative relations are of little help to our focused applications and should be replaced by generalizable and domain-specific relations. We will discuss the reflexivity, symmetry, and transitivity of paradigmatic relations as well as the appearance of specific semantic relations in the different kinds of KOS (folksonomies, nomenclatures, classification systems, thesauri, and ontologies). Finally, we will pick out KOS as a central theme of the Semantic Web.
  19. Lange, C.: Ontologies and languages for representing mathematical knowledge on the Semantic Web (2011) 0.03 
    0.03443653 = product of:
  0.13774613 = sum of:
    0.05562975 = weight(_text_:web in 135) [ClassicSimilarity], result of:
      0.05562975 = score(doc=135,freq=22.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.47835067 = fieldWeight in 135, product of:
          4.690416 = tf(freq=22.0), with freq of:
            22.0 = termFreq=22.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03125 = fieldNorm(doc=135)
    0.05562975 = weight(_text_:web in 135) [ClassicSimilarity], result of:
      0.05562975 = score(doc=135,freq=22.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.47835067 = fieldWeight in 135, product of:
          4.690416 = tf(freq=22.0), with freq of:
            22.0 = termFreq=22.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03125 = fieldNorm(doc=135)
    0.02648663 = product of:
      0.05297326 = sum of:
        0.05297326 = weight(_text_:2.0 in 135) [ClassicSimilarity], result of:
          0.05297326 = score(doc=135,freq=2.0), product of:
            0.20667298 = queryWeight, product of:
              5.799733 = idf(docFreq=363, maxDocs=44218)
              0.035634913 = queryNorm
            0.2563144 = fieldWeight in 135, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.799733 = idf(docFreq=363, maxDocs=44218)
              0.03125 = fieldNorm(doc=135)
      0.5 = coord(1/2)
  0.25 = coord(3/12)
    Abstract
    Mathematics is a ubiquitous foundation of science, technology, and engineering. Specific areas, such as numeric and symbolic computation or logics, enjoy considerable software support. Working mathematicians have recently started to adopt Web 2.0 environment, such as blogs and wikis, but these systems lack machine support for knowledge organization and reuse, and they are disconnected from tools such as computer algebra systems or interactive proof assistants.We argue that such scenarios will benefit from Semantic Web technology. Conversely, mathematics is still underrepresented on the Web of [Linked] Data. There are mathematics-related Linked Data, for example statistical government data or scientific publication databases, but their mathematical semantics has not yet been modeled. We argue that the services for the Web of Data will benefit from a deeper representation of mathematical knowledge. Mathematical knowledge comprises logical and functional structures - formulæ, statements, and theories -, a mixture of rigorous natural language and symbolic notation in documents, application-specific metadata, and discussions about conceptualizations, formalizations, proofs, and (counter-)examples. Our review of approaches to representing these structures covers ontologies for mathematical problems, proofs, interlinked scientific publications, scientific discourse, as well as mathematical metadata vocabularies and domain knowledge from pure and applied mathematics. Many fields of mathematics have not yet been implemented as proper Semantic Web ontologies; however, we show that MathML and OpenMath, the standard XML-based exchange languages for mathematical knowledge, can be fully integrated with RDF representations in order to contribute existing mathematical knowledge to theWeb of Data. We conclude with a roadmap for getting the mathematical Web of Data started: what datasets to publish, how to interlink them, and how to take advantage of these new connections.
    Content
    Vgl.: http://www.semantic-web-journal.net/content/ontologies-and-languages-representing-mathematical-knowledge-semantic-web http://www.semantic-web-journal.net/sites/default/files/swj122_2.pdf.
    Source
    Semantic Web journal. 2(2012), no.x
  20. Rousset, M.-C.; Atencia, M.; David, J.; Jouanot, F.; Ulliana, F.; Palombi, O.: Datalog revisited for reasoning in linked data (2017) 0.03 
    0.032949124 = product of:
  0.1317965 = sum of:
    0.051356614 = weight(_text_:web in 3936) [ClassicSimilarity], result of:
      0.051356614 = score(doc=3936,freq=12.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.4416067 = fieldWeight in 3936, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3936)
    0.029083263 = weight(_text_:world in 3936) [ClassicSimilarity], result of:
      0.029083263 = score(doc=3936,freq=2.0), product of:
        0.13696888 = queryWeight, product of:
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.035634913 = queryNorm
        0.21233483 = fieldWeight in 3936, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.8436708 = idf(docFreq=2573, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3936)
    0.051356614 = weight(_text_:web in 3936) [ClassicSimilarity], result of:
      0.051356614 = score(doc=3936,freq=12.0), product of:
        0.11629491 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.035634913 = queryNorm
        0.4416067 = fieldWeight in 3936, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3936)
  0.25 = coord(3/12)
    Abstract
    Linked Data provides access to huge, continuously growing amounts of open data and ontologies in RDF format that describe entities, links and properties on those entities. Equipping Linked Data with inference paves the way to make the Semantic Web a reality. In this survey, we describe a unifying framework for RDF ontologies and databases that we call deductive RDF triplestores. It consists in equipping RDF triplestores with Datalog inference rules. This rule language allows to capture in a uniform manner OWL constraints that are useful in practice, such as property transitivity or symmetry, but also domain-specific rules with practical relevance for users in many domains of interest. The expressivity and the genericity of this framework is illustrated for modeling Linked Data applications and for developing inference algorithms. In particular, we show how it allows to model the problem of data linkage in Linked Data as a reasoning problem on possibly decentralized data. We also explain how it makes possible to efficiently extract expressive modules from Semantic Web ontologies and databases with formal guarantees, whilst effectively controlling their succinctness. Experiments conducted on real-world datasets have demonstrated the feasibility of this approach and its usefulness in practice for data integration and information extraction.
    Series
    Lecture Notes in Computer Scienc;10370) (Information Systems and Applications, incl. Internet/Web, and HCI
    Source
    Reasoning Web: Semantic Interoperability on the Web, 13th International Summer School 2017, London, UK, July 7-11, 2017, Tutorial Lectures. Eds.: Ianni, G. et al
    Theme
    Semantic Web

Authors

Types

  • a 95
  • el 32
  • m 11
  • x 6
  • s 4
  • r 1
  • More… Less…

Themes

Subjects

Classifications