Search (91 results, page 1 of 5)

  • × theme_ss:"Automatisches Indexieren"
  1. Wolfekuhler, M.R.; Punch, W.F.: Finding salient features for personal Web pages categories (1997) 0.02
    0.023177905 = product of:
      0.06953371 = sum of:
        0.025005683 = product of:
          0.050011367 = sum of:
            0.050011367 = weight(_text_:web in 2673) [ClassicSimilarity], result of:
              0.050011367 = score(doc=2673,freq=6.0), product of:
                0.11439841 = queryWeight, product of:
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.03505379 = queryNorm
                0.43716836 = fieldWeight in 2673, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2673)
          0.5 = coord(1/2)
        0.04452803 = product of:
          0.06679204 = sum of:
            0.033546906 = weight(_text_:29 in 2673) [ClassicSimilarity], result of:
              0.033546906 = score(doc=2673,freq=2.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.27205724 = fieldWeight in 2673, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2673)
            0.03324513 = weight(_text_:22 in 2673) [ClassicSimilarity], result of:
              0.03324513 = score(doc=2673,freq=2.0), product of:
                0.1227524 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03505379 = queryNorm
                0.2708308 = fieldWeight in 2673, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2673)
          0.6666667 = coord(2/3)
      0.33333334 = coord(2/6)
    
    Abstract
    Examines techniques that discover features in sets of pre-categorized documents, such that similar documents can be found on the WWW. Examines techniques which will classifiy training examples with high accuracy, then explains why this is not necessarily useful. Describes a method for extracting word clusters from the raw document features. Results show that the clustering technique is successful in discovering word groups in personal Web pages which can be used to find similar information on the WWW
    Date
    1. 8.1996 22:08:06
    Footnote
    Contribution to a special issue of papers from the 6th International World Wide Web conference, held 7-11 Apr 1997, Santa Clara, California
    Source
    Computer networks and ISDN systems. 29(1997) no.8, S.1147-1156
  2. Schulz, K.U.; Brunner, L.: Vollautomatische thematische Verschlagwortung großer Textkollektionen mittels semantischer Netze (2017) 0.01
    0.00853978 = product of:
      0.02561934 = sum of:
        0.0144370375 = product of:
          0.028874075 = sum of:
            0.028874075 = weight(_text_:web in 3493) [ClassicSimilarity], result of:
              0.028874075 = score(doc=3493,freq=2.0), product of:
                0.11439841 = queryWeight, product of:
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.03505379 = queryNorm
                0.25239927 = fieldWeight in 3493, 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=3493)
          0.5 = coord(1/2)
        0.011182303 = product of:
          0.033546906 = sum of:
            0.033546906 = weight(_text_:29 in 3493) [ClassicSimilarity], result of:
              0.033546906 = score(doc=3493,freq=2.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.27205724 = fieldWeight in 3493, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3493)
          0.33333334 = coord(1/3)
      0.33333334 = coord(2/6)
    
    Source
    Theorie, Semantik und Organisation von Wissen: Proceedings der 13. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und dem 13. Internationalen Symposium der Informationswissenschaft der Higher Education Association for Information Science (HI) Potsdam (19.-20.03.2013): 'Theory, Information and Organization of Knowledge' / Proceedings der 14. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und Natural Language & Information Systems (NLDB) Passau (16.06.2015): 'Lexical Resources for Knowledge Organization' / Proceedings des Workshops der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) auf der SEMANTICS Leipzig (1.09.2014): 'Knowledge Organization and Semantic Web' / Proceedings des Workshops der Polnischen und Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) Cottbus (29.-30.09.2011): 'Economics of Knowledge Production and Organization'. Hrsg. von W. Babik, H.P. Ohly u. K. Weber
  3. Böhm, A.; Seifert, C.; Schlötterer, J.; Granitzer, M.: Identifying tweets from the economic domain (2017) 0.01
    0.00853978 = product of:
      0.02561934 = sum of:
        0.0144370375 = product of:
          0.028874075 = sum of:
            0.028874075 = weight(_text_:web in 3495) [ClassicSimilarity], result of:
              0.028874075 = score(doc=3495,freq=2.0), product of:
                0.11439841 = queryWeight, product of:
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.03505379 = queryNorm
                0.25239927 = fieldWeight in 3495, 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=3495)
          0.5 = coord(1/2)
        0.011182303 = product of:
          0.033546906 = sum of:
            0.033546906 = weight(_text_:29 in 3495) [ClassicSimilarity], result of:
              0.033546906 = score(doc=3495,freq=2.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.27205724 = fieldWeight in 3495, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3495)
          0.33333334 = coord(1/3)
      0.33333334 = coord(2/6)
    
    Source
    Theorie, Semantik und Organisation von Wissen: Proceedings der 13. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und dem 13. Internationalen Symposium der Informationswissenschaft der Higher Education Association for Information Science (HI) Potsdam (19.-20.03.2013): 'Theory, Information and Organization of Knowledge' / Proceedings der 14. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und Natural Language & Information Systems (NLDB) Passau (16.06.2015): 'Lexical Resources for Knowledge Organization' / Proceedings des Workshops der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) auf der SEMANTICS Leipzig (1.09.2014): 'Knowledge Organization and Semantic Web' / Proceedings des Workshops der Polnischen und Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) Cottbus (29.-30.09.2011): 'Economics of Knowledge Production and Organization'. Hrsg. von W. Babik, H.P. Ohly u. K. Weber
  4. Kempf, A.O.: Neue Verfahrenswege der Wissensorganisation : eine Evaluation automatischer Indexierung in der sozialwissenschaftlichen Fachinformation (2017) 0.01
    0.00853978 = product of:
      0.02561934 = sum of:
        0.0144370375 = product of:
          0.028874075 = sum of:
            0.028874075 = weight(_text_:web in 3497) [ClassicSimilarity], result of:
              0.028874075 = score(doc=3497,freq=2.0), product of:
                0.11439841 = queryWeight, product of:
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.03505379 = queryNorm
                0.25239927 = fieldWeight in 3497, 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=3497)
          0.5 = coord(1/2)
        0.011182303 = product of:
          0.033546906 = sum of:
            0.033546906 = weight(_text_:29 in 3497) [ClassicSimilarity], result of:
              0.033546906 = score(doc=3497,freq=2.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.27205724 = fieldWeight in 3497, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3497)
          0.33333334 = coord(1/3)
      0.33333334 = coord(2/6)
    
    Source
    Theorie, Semantik und Organisation von Wissen: Proceedings der 13. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und dem 13. Internationalen Symposium der Informationswissenschaft der Higher Education Association for Information Science (HI) Potsdam (19.-20.03.2013): 'Theory, Information and Organization of Knowledge' / Proceedings der 14. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und Natural Language & Information Systems (NLDB) Passau (16.06.2015): 'Lexical Resources for Knowledge Organization' / Proceedings des Workshops der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) auf der SEMANTICS Leipzig (1.09.2014): 'Knowledge Organization and Semantic Web' / Proceedings des Workshops der Polnischen und Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) Cottbus (29.-30.09.2011): 'Economics of Knowledge Production and Organization'. Hrsg. von W. Babik, H.P. Ohly u. K. Weber
  5. Franke-Maier, M.: Anforderungen an die Qualität der Inhaltserschließung im Spannungsfeld von intellektuell und automatisch erzeugten Metadaten (2018) 0.01
    0.0074213385 = product of:
      0.04452803 = sum of:
        0.04452803 = product of:
          0.06679204 = sum of:
            0.033546906 = weight(_text_:29 in 5344) [ClassicSimilarity], result of:
              0.033546906 = score(doc=5344,freq=2.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.27205724 = fieldWeight in 5344, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5344)
            0.03324513 = weight(_text_:22 in 5344) [ClassicSimilarity], result of:
              0.03324513 = score(doc=5344,freq=2.0), product of:
                0.1227524 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03505379 = queryNorm
                0.2708308 = fieldWeight in 5344, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5344)
          0.6666667 = coord(2/3)
      0.16666667 = coord(1/6)
    
    Abstract
    Spätestens seit dem Deutschen Bibliothekartag 2018 hat sich die Diskussion zu den automatischen Verfahren der Inhaltserschließung der Deutschen Nationalbibliothek von einer politisch geführten Diskussion in eine Qualitätsdiskussion verwandelt. Der folgende Beitrag beschäftigt sich mit Fragen der Qualität von Inhaltserschließung in digitalen Zeiten, wo heterogene Erzeugnisse unterschiedlicher Verfahren aufeinandertreffen und versucht, wichtige Anforderungen an Qualität zu definieren. Dieser Tagungsbeitrag fasst die vom Autor als Impulse vorgetragenen Ideen beim Workshop der FAG "Erschließung und Informationsvermittlung" des GBV am 29. August 2018 in Kiel zusammen. Der Workshop fand im Rahmen der 22. Verbundkonferenz des GBV statt.
  6. Lepsky, K.: Automatische Indexierung und bibliothekarische Inhaltserschließung : Ergebnisse des DFG-Projekts MILOS I (1996) 0.01
    0.0060750647 = product of:
      0.036450386 = sum of:
        0.036450386 = product of:
          0.07290077 = sum of:
            0.07290077 = weight(_text_:seite in 2061) [ClassicSimilarity], result of:
              0.07290077 = score(doc=2061,freq=2.0), product of:
                0.19633847 = queryWeight, product of:
                  5.601063 = idf(docFreq=443, maxDocs=44218)
                  0.03505379 = queryNorm
                0.3713015 = fieldWeight in 2061, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.601063 = idf(docFreq=443, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2061)
          0.5 = coord(1/2)
      0.16666667 = coord(1/6)
    
    Abstract
    Kooperative Katalogisierung in der Bibliotheksverbünden und steigende Zahlen retrokonvertierter Altdaten füfhren zu einem stetigen Anwachsen maschinenlesbar verfügbarer Titeldaten. Dieser Entewicklung aud ser Katalogisat- bzw. Datenseite entspricht eine ähnlich rasante Entwicklung auf der Seite der Zugangsmöglichkeiten, den Online-Publikumskatalogen. Immer mehr Katalogdaten von immer mehr Bibliotheken sind in immer mehr OPACs nachgewiesen. Mit dieser auch durch neue Zugriffsformen (Internet) verbesserten Verfügbarkeit hält die bibliothekarische Sacherschließung längst nicht mehr Schritt. In diesem Beitrag werden die Vorgehensweise und Ergebnisse des Projektes MILOS I vorgestellt, das an der Universitäts- und Landesbibliothek zur automatischen Indexierung bibliothekarischer Titeldaten und zur Anreicherung von Katalogdaten durchgeführt wurde.
  7. Kuhlen, R.: Morphologische Relationen durch Reduktionsalgorithmen (1974) 0.01
    0.005271389 = product of:
      0.031628333 = sum of:
        0.031628333 = product of:
          0.09488499 = sum of:
            0.09488499 = weight(_text_:29 in 4251) [ClassicSimilarity], result of:
              0.09488499 = score(doc=4251,freq=4.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.7694941 = fieldWeight in 4251, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4251)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    29. 1.2011 14:56:29
  8. Rasmussen, E.M.: Indexing and retrieval for the Web (2002) 0.00
    0.0045015374 = product of:
      0.027009223 = sum of:
        0.027009223 = product of:
          0.054018445 = sum of:
            0.054018445 = weight(_text_:web in 4285) [ClassicSimilarity], result of:
              0.054018445 = score(doc=4285,freq=28.0), product of:
                0.11439841 = queryWeight, product of:
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.03505379 = queryNorm
                0.47219574 = fieldWeight in 4285, product of:
                  5.2915025 = tf(freq=28.0), with freq of:
                    28.0 = termFreq=28.0
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.02734375 = fieldNorm(doc=4285)
          0.5 = coord(1/2)
      0.16666667 = coord(1/6)
    
    Abstract
    The introduction and growth of the World Wide Web (WWW, or Web) have resulted in a profound change in the way individuals and organizations access information. In terms of volume, nature, and accessibility, the characteristics of electronic information are significantly different from those of even five or six years ago. Control of, and access to, this flood of information rely heavily an automated techniques for indexing and retrieval. According to Gudivada, Raghavan, Grosky, and Kasanagottu (1997, p. 58), "The ability to search and retrieve information from the Web efficiently and effectively is an enabling technology for realizing its full potential." Almost 93 percent of those surveyed consider the Web an "indispensable" Internet technology, second only to e-mail (Graphie, Visualization & Usability Center, 1998). Although there are other ways of locating information an the Web (browsing or following directory structures), 85 percent of users identify Web pages by means of a search engine (Graphie, Visualization & Usability Center, 1998). A more recent study conducted by the Stanford Institute for the Quantitative Study of Society confirms the finding that searching for information is second only to e-mail as an Internet activity (Nie & Ebring, 2000, online). In fact, Nie and Ebring conclude, "... the Internet today is a giant public library with a decidedly commercial tilt. The most widespread use of the Internet today is as an information search utility for products, travel, hobbies, and general information. Virtually all users interviewed responded that they engaged in one or more of these information gathering activities."
    Techniques for automated indexing and information retrieval (IR) have been developed, tested, and refined over the past 40 years, and are well documented (see, for example, Agosti & Smeaton, 1996; BaezaYates & Ribeiro-Neto, 1999a; Frakes & Baeza-Yates, 1992; Korfhage, 1997; Salton, 1989; Witten, Moffat, & Bell, 1999). With the introduction of the Web, and the capability to index and retrieve via search engines, these techniques have been extended to a new environment. They have been adopted, altered, and in some Gases extended to include new methods. "In short, search engines are indispensable for searching the Web, they employ a variety of relatively advanced IR techniques, and there are some peculiar aspects of search engines that make searching the Web different than more conventional information retrieval" (Gordon & Pathak, 1999, p. 145). The environment for information retrieval an the World Wide Web differs from that of "conventional" information retrieval in a number of fundamental ways. The collection is very large and changes continuously, with pages being added, deleted, and altered. Wide variability between the size, structure, focus, quality, and usefulness of documents makes Web documents much more heterogeneous than a typical electronic document collection. The wide variety of document types includes images, video, audio, and scripts, as well as many different document languages. Duplication of documents and sites is common. Documents are interconnected through networks of hyperlinks. Because of the size and dynamic nature of the Web, preprocessing all documents requires considerable resources and is often not feasible, certainly not an the frequent basis required to ensure currency. Query length is usually much shorter than in other environments-only a few words-and user behavior differs from that in other environments. These differences make the Web a novel environment for information retrieval (Baeza-Yates & Ribeiro-Neto, 1999b; Bharat & Henzinger, 1998; Huang, 2000).
  9. Panyr, J.: STEINADLER: ein Verfahren zur automatischen Deskribierung und zur automatischen thematischen Klassifikation (1978) 0.00
    0.0042599253 = product of:
      0.02555955 = sum of:
        0.02555955 = product of:
          0.07667865 = sum of:
            0.07667865 = weight(_text_:29 in 5169) [ClassicSimilarity], result of:
              0.07667865 = score(doc=5169,freq=2.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.6218451 = fieldWeight in 5169, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.125 = fieldNorm(doc=5169)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Source
    Nachrichten für Dokumentation. 29(1978), S.92-96
  10. Salton, G.; Yang, C.S.: On the specification of term values in automatic indexing (1973) 0.00
    0.0042599253 = product of:
      0.02555955 = sum of:
        0.02555955 = product of:
          0.07667865 = sum of:
            0.07667865 = weight(_text_:29 in 5476) [ClassicSimilarity], result of:
              0.07667865 = score(doc=5476,freq=2.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.6218451 = fieldWeight in 5476, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.125 = fieldNorm(doc=5476)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Source
    Journal of documentation. 29(1973), S.351-372
  11. Voorhees, E.M.: Implementing agglomerative hierarchic clustering algorithms for use in document retrieval (1986) 0.00
    0.004221604 = product of:
      0.025329625 = sum of:
        0.025329625 = product of:
          0.075988874 = sum of:
            0.075988874 = weight(_text_:22 in 402) [ClassicSimilarity], result of:
              0.075988874 = score(doc=402,freq=2.0), product of:
                0.1227524 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03505379 = queryNorm
                0.61904186 = fieldWeight in 402, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.125 = fieldNorm(doc=402)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Source
    Information processing and management. 22(1986) no.6, S.465-476
  12. Nohr, H.: Automatische Indexierung : Einführung in betriebliche Verfahren, Systeme und Anwendungen (2001) 0.00
    0.004050043 = product of:
      0.024300257 = sum of:
        0.024300257 = product of:
          0.048600513 = sum of:
            0.048600513 = weight(_text_:seite in 2543) [ClassicSimilarity], result of:
              0.048600513 = score(doc=2543,freq=2.0), product of:
                0.19633847 = queryWeight, product of:
                  5.601063 = idf(docFreq=443, maxDocs=44218)
                  0.03505379 = queryNorm
                0.24753433 = fieldWeight in 2543, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.601063 = idf(docFreq=443, maxDocs=44218)
                  0.03125 = fieldNorm(doc=2543)
          0.5 = coord(1/2)
      0.16666667 = coord(1/6)
    
    Abstract
    Das vorliegende Buch zur automatischen Indexierung trägt dem Umstand Rechnung, dass ein ständig wachsender Berg von Dokumenten in Unternehmen, öffentlichen Verwaltungen, Einrichtungen der Fachinformation oder dem Internet entscheidungsrelevante Informationen enthält, die mit manuellen Mitteln und Methoden kaum mehr beherrschbar und erschließbar sind. Diese unstrukturierten Informationen sind in einer zunehmend von der schnellen Verarbeitung der Ressource Information abhängigen Wirtschaft von größter Bedeutung, ihre Beherrschung ist unabdingbar für den Wettbewerbserfolg. Verfahren der automatischen Indexierung von Dokumenten sind damit eine Basistechnik der betrieblichen Informationswirtschaft geworden. Trotz dieses Urnstandes, liegt bis auf den heutigen Tag keine einführende Darstellung in die Thematik vor. Die Zielsetzung dieses Buches ist es, einführend die Grundlagen sowie die verschiedenen Ansätze und Verfahren der automatischen Indexierung von Dokumenten vorzustellen. Die Darstellung verzichtet dabei bewusst auf die allzu detaillierte Tiefendarstellung einzelner Verfahren und Indexierungssysteme zugunsten einer Übersicht der grundsätzlichen Ansätze mit ihren jeweiligen Voraussetzungen, ihren Möglichkeiten und ihren Beschränkungen. Soweit einzelne Verfahren und Indexierungssysteme behandelt werden, besitzen diese beispielhaften Charakter für den behandelten Ansatz. Bei der Darstellung war ich stets uni eine verständliche Sprache bemüht. Der Text dieses Buches ist entstanden aus Vorlesungen in entsprechenden Lehrveranstaltungen im Studiengang Informationswirtschaft an der Fachhochschule Stuttgart. Die Darstellung richtet sich an Studierende und Lehrende der Informationswirtschaft, des Informationsmanagements, der Dokumentation sowie der Wirtschaftsinformatik, zugleich aber auch an die interessierten und mit der Thernatik konfrontierten Praktiker, die weniger an der technischen Seite der automatischen Indexierung, als vielmehr einen grundsätzlichen Informationsbedarf über die Möglichkeiten und die Schwierigkeiten des Einsatzes entsprechender Verfahren haben
  13. Tavakolizadeh-Ravari, M.: Analysis of the long term dynamics in thesaurus developments and its consequences (2017) 0.00
    0.004050043 = product of:
      0.024300257 = sum of:
        0.024300257 = product of:
          0.048600513 = sum of:
            0.048600513 = weight(_text_:seite in 3081) [ClassicSimilarity], result of:
              0.048600513 = score(doc=3081,freq=2.0), product of:
                0.19633847 = queryWeight, product of:
                  5.601063 = idf(docFreq=443, maxDocs=44218)
                  0.03505379 = queryNorm
                0.24753433 = fieldWeight in 3081, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.601063 = idf(docFreq=443, maxDocs=44218)
                  0.03125 = fieldNorm(doc=3081)
          0.5 = coord(1/2)
      0.16666667 = coord(1/6)
    
    Abstract
    Die Arbeit analysiert die dynamische Entwicklung und den Gebrauch von Thesaurusbegriffen. Zusätzlich konzentriert sie sich auf die Faktoren, die die Zahl von Indexbegriffen pro Dokument oder Zeitschrift beeinflussen. Als Untersuchungsobjekt dienten der MeSH und die entsprechende Datenbank "MEDLINE". Die wichtigsten Konsequenzen sind: 1. Der MeSH-Thesaurus hat sich durch drei unterschiedliche Phasen jeweils logarithmisch entwickelt. Solch einen Thesaurus sollte folgenden Gleichung folgen: "T = 3.076,6 Ln (d) - 22.695 + 0,0039d" (T = Begriffe, Ln = natürlicher Logarithmus und d = Dokumente). Um solch einen Thesaurus zu konstruieren, muss man demnach etwa 1.600 Dokumente von unterschiedlichen Themen des Bereiches des Thesaurus haben. Die dynamische Entwicklung von Thesauri wie MeSH erfordert die Einführung eines neuen Begriffs pro Indexierung von 256 neuen Dokumenten. 2. Die Verteilung der Thesaurusbegriffe erbrachte drei Kategorien: starke, normale und selten verwendete Headings. Die letzte Gruppe ist in einer Testphase, während in der ersten und zweiten Kategorie die neu hinzukommenden Deskriptoren zu einem Thesauruswachstum führen. 3. Es gibt ein logarithmisches Verhältnis zwischen der Zahl von Index-Begriffen pro Aufsatz und dessen Seitenzahl für die Artikeln zwischen einer und einundzwanzig Seiten. 4. Zeitschriftenaufsätze, die in MEDLINE mit Abstracts erscheinen erhalten fast zwei Deskriptoren mehr. 5. Die Findablity der nicht-englisch sprachigen Dokumente in MEDLINE ist geringer als die englische Dokumente. 6. Aufsätze der Zeitschriften mit einem Impact Factor 0 bis fünfzehn erhalten nicht mehr Indexbegriffe als die der anderen von MEDINE erfassten Zeitschriften. 7. In einem Indexierungssystem haben unterschiedliche Zeitschriften mehr oder weniger Gewicht in ihrem Findability. Die Verteilung der Indexbegriffe pro Seite hat gezeigt, dass es bei MEDLINE drei Kategorien der Publikationen gibt. Außerdem gibt es wenige stark bevorzugten Zeitschriften."
  14. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.00
    0.0036939036 = product of:
      0.02216342 = sum of:
        0.02216342 = product of:
          0.06649026 = sum of:
            0.06649026 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.06649026 = score(doc=262,freq=2.0), product of:
                0.1227524 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03505379 = queryNorm
                0.5416616 = fieldWeight in 262, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=262)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    20.10.2000 12:22:23
  15. Hlava, M.M.K.: Automatic indexing : comparing rule-based and statistics-based indexing systems (2005) 0.00
    0.0036939036 = product of:
      0.02216342 = sum of:
        0.02216342 = product of:
          0.06649026 = sum of:
            0.06649026 = weight(_text_:22 in 6265) [ClassicSimilarity], result of:
              0.06649026 = score(doc=6265,freq=2.0), product of:
                0.1227524 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03505379 = queryNorm
                0.5416616 = fieldWeight in 6265, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=6265)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Source
    Information outlook. 9(2005) no.8, S.22-23
  16. Fauzi, F.; Belkhatir, M.: Multifaceted conceptual image indexing on the world wide web (2013) 0.00
    0.0035722405 = product of:
      0.021433443 = sum of:
        0.021433443 = product of:
          0.042866886 = sum of:
            0.042866886 = weight(_text_:web in 2721) [ClassicSimilarity], result of:
              0.042866886 = score(doc=2721,freq=6.0), product of:
                0.11439841 = queryWeight, product of:
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.03505379 = queryNorm
                0.37471575 = fieldWeight in 2721, 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=2721)
          0.5 = coord(1/2)
      0.16666667 = coord(1/6)
    
    Abstract
    In this paper, we describe a user-centered design of an automated multifaceted concept-based indexing framework which analyzes the semantics of the Web image contextual information and classifies it into five broad semantic concept facets: signal, object, abstract, scene, and relational; and identifies the semantic relationships between the concepts. An important aspect of our indexing model is that it relates to the users' levels of image descriptions. Also, a major contribution relies on the fact that the classification is performed automatically with the raw image contextual information extracted from any general webpage and is not solely based on image tags like state-of-the-art solutions. Human Language Technology techniques and an external knowledge base are used to analyze the information both syntactically and semantically. Experimental results on a human-annotated Web image collection and corresponding contextual information indicate that our method outperforms empirical frameworks employing tf-idf and location-based tf-idf weighting schemes as well as n-gram indexing in a recall/precision based evaluation framework.
  17. McKiernan, G.: Automated categorisation of Web resources : a profile of selected projects, research, products, and services (1996) 0.00
    0.00343739 = product of:
      0.02062434 = sum of:
        0.02062434 = product of:
          0.04124868 = sum of:
            0.04124868 = weight(_text_:web in 2533) [ClassicSimilarity], result of:
              0.04124868 = score(doc=2533,freq=2.0), product of:
                0.11439841 = queryWeight, product of:
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.03505379 = queryNorm
                0.36057037 = fieldWeight in 2533, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.078125 = fieldNorm(doc=2533)
          0.5 = coord(1/2)
      0.16666667 = coord(1/6)
    
  18. Shafer, K.: Scorpion Project explores using Dewey to organize the Web (1996) 0.00
    0.0034028427 = product of:
      0.020417055 = sum of:
        0.020417055 = product of:
          0.04083411 = sum of:
            0.04083411 = weight(_text_:web in 6750) [ClassicSimilarity], result of:
              0.04083411 = score(doc=6750,freq=4.0), product of:
                0.11439841 = queryWeight, product of:
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.03505379 = queryNorm
                0.35694647 = fieldWeight in 6750, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.2635105 = idf(docFreq=4597, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=6750)
          0.5 = coord(1/2)
      0.16666667 = coord(1/6)
    
    Abstract
    As the amount of accessible information on the WWW increases, so will the cost of accessing it, even if search servcies remain free, due to the increasing amount of time users will have to spend to find needed items. Considers what the seemingly unorganized Web and the organized world of libraries can offer each other. The OCLC Scorpion Project is attempting to combine indexing and cataloguing, specifically focusing on building tools for automatic subject recognition using the technqiues of library science and information retrieval. If subject headings or concept domains can be automatically assigned to electronic items, improved filtering tools for searching can be produced
  19. Junger, U.: Möglichkeiten und Probleme automatischer Erschließungsverfahren in Bibliotheken : Bericht vom KASCADE-Workshop in der Universitäts- und Landesbibliothek Düsseldorf (1999) 0.00
    0.0031949438 = product of:
      0.019169662 = sum of:
        0.019169662 = product of:
          0.057508986 = sum of:
            0.057508986 = weight(_text_:29 in 3645) [ClassicSimilarity], result of:
              0.057508986 = score(doc=3645,freq=2.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.46638384 = fieldWeight in 3645, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.09375 = fieldNorm(doc=3645)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    23.10.1996 17:26:29
  20. Spitters, M.J.: Adjust : automatische thesauriele ontsluiting van grote hoeveelheden krantenartikelen (1999) 0.00
    0.0031949438 = product of:
      0.019169662 = sum of:
        0.019169662 = product of:
          0.057508986 = sum of:
            0.057508986 = weight(_text_:29 in 3938) [ClassicSimilarity], result of:
              0.057508986 = score(doc=3938,freq=2.0), product of:
                0.12330827 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03505379 = queryNorm
                0.46638384 = fieldWeight in 3938, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.09375 = fieldNorm(doc=3938)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Source
    Informatie professional. 3(1999) no.10, S.29-31

Years

Languages

  • e 48
  • d 39
  • nl 2
  • ja 1
  • ru 1
  • More… Less…

Types

  • a 79
  • el 8
  • x 6
  • m 4
  • p 1
  • s 1
  • More… Less…