Search (291 results, page 1 of 15)

  • × theme_ss:"Suchmaschinen"
  1. Chaudiron, S.; Ihadjadene, M.: Studying Web search engines from a user perspective : key concepts and main approaches (2012) 0.06
    0.063451454 = product of:
      0.09517717 = sum of:
        0.032236047 = weight(_text_:management in 109) [ClassicSimilarity], result of:
          0.032236047 = score(doc=109,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.18620178 = fieldWeight in 109, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=109)
        0.06294113 = sum of:
          0.02814634 = weight(_text_:system in 109) [ClassicSimilarity], result of:
            0.02814634 = score(doc=109,freq=2.0), product of:
              0.16177002 = queryWeight, product of:
                3.1495528 = idf(docFreq=5152, maxDocs=44218)
                0.051362853 = queryNorm
              0.17398985 = fieldWeight in 109, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1495528 = idf(docFreq=5152, maxDocs=44218)
                0.0390625 = fieldNorm(doc=109)
          0.03479479 = weight(_text_:22 in 109) [ClassicSimilarity], result of:
            0.03479479 = score(doc=109,freq=2.0), product of:
              0.17986396 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.051362853 = queryNorm
              0.19345059 = fieldWeight in 109, 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=109)
      0.6666667 = coord(2/3)
    
    Abstract
    This chapter shows that the wider use of Web search engines, reconsidering the theoretical and methodological frameworks to grasp new information practices. Beginning with an overview of the recent challenges implied by the dynamic nature of the Web, this chapter then traces the information behavior related concepts in order to present the different approaches from the user perspective. The authors pay special attention to the concept of "information practice" and other related concepts such as "use", "activity", and "behavior" largely used in the literature but not always strictly defined. The authors provide an overview of user-oriented studies that are meaningful to understand the different contexts of use of electronic information access systems, focusing on five approaches: the system-oriented approaches, the theories of information seeking, the cognitive and psychological approaches, the management science approaches, and the marketing approaches. Future directions of work are then shaped, including social searching and the ethical, cultural, and political dimensions of Web search engines. The authors conclude considering the importance of Critical theory to better understand the role of Web Search engines in our modern society.
    Date
    20. 4.2012 13:22:37
  2. Lewandowski, D.; Sünkler, S.: What does Google recommend when you want to compare insurance offerings? (2019) 0.06
    0.063451454 = product of:
      0.09517717 = sum of:
        0.032236047 = weight(_text_:management in 5288) [ClassicSimilarity], result of:
          0.032236047 = score(doc=5288,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.18620178 = fieldWeight in 5288, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5288)
        0.06294113 = sum of:
          0.02814634 = weight(_text_:system in 5288) [ClassicSimilarity], result of:
            0.02814634 = score(doc=5288,freq=2.0), product of:
              0.16177002 = queryWeight, product of:
                3.1495528 = idf(docFreq=5152, maxDocs=44218)
                0.051362853 = queryNorm
              0.17398985 = fieldWeight in 5288, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1495528 = idf(docFreq=5152, maxDocs=44218)
                0.0390625 = fieldNorm(doc=5288)
          0.03479479 = weight(_text_:22 in 5288) [ClassicSimilarity], result of:
            0.03479479 = score(doc=5288,freq=2.0), product of:
              0.17986396 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.051362853 = queryNorm
              0.19345059 = fieldWeight in 5288, 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=5288)
      0.6666667 = coord(2/3)
    
    Abstract
    Purpose The purpose of this paper is to describe a new method to improve the analysis of search engine results by considering the provider level as well as the domain level. This approach is tested by conducting a study using queries on the topic of insurance comparisons. Design/methodology/approach The authors conducted an empirical study that analyses the results of search queries aimed at comparing insurance companies. The authors used a self-developed software system that automatically queries commercial search engines and automatically extracts the content of the returned result pages for further data analysis. The data analysis was carried out using the KNIME Analytics Platform. Findings Google's top search results are served by only a few providers that frequently appear in these results. The authors show that some providers operate several domains on the same topic and that these domains appear for the same queries in the result lists. Research limitations/implications The authors demonstrate the feasibility of this approach and draw conclusions for further investigations from the empirical study. However, the study is a limited use case based on a limited number of search queries. Originality/value The proposed method allows large-scale analysis of the composition of the top results from commercial search engines. It allows using valid empirical data to determine what users actually see on the search engine result pages.
    Date
    20. 1.2015 18:30:22
    Source
    Aslib journal of information management. 71(2019) no.3, S.310-324
  3. Schüler, P.: Wertes Wissen : Knowledge Management vermeidet Datenfriedhöfe (2001) 0.05
    0.052942336 = product of:
      0.0794135 = sum of:
        0.051577676 = weight(_text_:management in 6815) [ClassicSimilarity], result of:
          0.051577676 = score(doc=6815,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.29792285 = fieldWeight in 6815, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0625 = fieldNorm(doc=6815)
        0.02783583 = product of:
          0.05567166 = sum of:
            0.05567166 = weight(_text_:22 in 6815) [ClassicSimilarity], result of:
              0.05567166 = score(doc=6815,freq=2.0), product of:
                0.17986396 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051362853 = queryNorm
                0.30952093 = fieldWeight in 6815, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=6815)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Date
    8.11.2001 19:58:22
  4. Serrano Cobos, J.; Quintero Orta, A.: Design, development and management of an information recovery system for an Internet Website : from documentary theory to practice (2003) 0.05
    0.0523929 = product of:
      0.07858935 = sum of:
        0.05470639 = weight(_text_:management in 2726) [ClassicSimilarity], result of:
          0.05470639 = score(doc=2726,freq=4.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.31599492 = fieldWeight in 2726, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.046875 = fieldNorm(doc=2726)
        0.02388296 = product of:
          0.04776592 = sum of:
            0.04776592 = weight(_text_:system in 2726) [ClassicSimilarity], result of:
              0.04776592 = score(doc=2726,freq=4.0), product of:
                0.16177002 = queryWeight, product of:
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.051362853 = queryNorm
                0.29527056 = fieldWeight in 2726, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2726)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    A real case study is shown, explaining in a timeline the whole process of design, development and evaluation of a search engine used as a navigational help tool for end users and clients an a content website, e-commerce driven. The nature of the website is a community website, which will determine the core design of the information service. This study will involve several steps, such as information recovery system analysis, comparative analysis of other commercial search engines, service design, functionalities and scope; software selection, design of the project, project management, future service administration and conclusions.
  5. Wiley, D.L.: Beyond information retrieval : ways to provide content in context (1998) 0.05
    0.046324544 = product of:
      0.06948681 = sum of:
        0.045130465 = weight(_text_:management in 3647) [ClassicSimilarity], result of:
          0.045130465 = score(doc=3647,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.2606825 = fieldWeight in 3647, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3647)
        0.02435635 = product of:
          0.0487127 = sum of:
            0.0487127 = weight(_text_:22 in 3647) [ClassicSimilarity], result of:
              0.0487127 = score(doc=3647,freq=2.0), product of:
                0.17986396 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051362853 = queryNorm
                0.2708308 = fieldWeight in 3647, 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=3647)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    The days of the traditional abstracting and indexing services are waning, as abstracts and bibliographic data become commodities. However, there are tremedous opportunities for those organizations willing to look beyond the status quo to the new possibilities enabled by the latest wave of advanced technologies. Those who own content need to focus on the delivery mechanisms and new markets that technology can provide. Features like automatic extraction of key concepts or names, collaborative filtering to help with trend analysis, and visualization techniques can take information past the retrieval stage and into the management area
    Source
    Database. 21(1998) no.4, S.18-22
  6. Koch, T.: Quality-controlled subject gateways : definitions, typologies, empirical overview (2000) 0.05
    0.046324544 = product of:
      0.06948681 = sum of:
        0.045130465 = weight(_text_:management in 631) [ClassicSimilarity], result of:
          0.045130465 = score(doc=631,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.2606825 = fieldWeight in 631, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0546875 = fieldNorm(doc=631)
        0.02435635 = product of:
          0.0487127 = sum of:
            0.0487127 = weight(_text_:22 in 631) [ClassicSimilarity], result of:
              0.0487127 = score(doc=631,freq=2.0), product of:
                0.17986396 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051362853 = queryNorm
                0.2708308 = fieldWeight in 631, 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=631)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    'Quality-controlled subject gateways' are Internet services which apply a rich set of quality measures to support systematic resource discovery. Considerable manual effort is used to secure a selection of resources which meet quality criteria and to display a rich description of these resources with standards-based metadata. Regular checking and updating ensure good collection management. A main goal is to provide a high quality of subject access through indexing resources using controlled vocabularies and by offering a deep classification structure for advanced searching and browsing. This article provides an initial empirical overview of existing services of this kind, their approaches and technologies, based on proposed working definitions and typologies of subject gateways
    Date
    22. 6.2002 19:37:55
  7. Zutter, S.: Alles dreht sich um die Suche : Information Online Konferenz in Sydney, Australien (2005) 0.04
    0.041990705 = product of:
      0.06298605 = sum of:
        0.045588657 = weight(_text_:management in 3423) [ClassicSimilarity], result of:
          0.045588657 = score(doc=3423,freq=4.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.2633291 = fieldWeight in 3423, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3423)
        0.017397394 = product of:
          0.03479479 = sum of:
            0.03479479 = weight(_text_:22 in 3423) [ClassicSimilarity], result of:
              0.03479479 = score(doc=3423,freq=2.0), product of:
                0.17986396 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051362853 = queryNorm
                0.19345059 = fieldWeight in 3423, 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=3423)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    Mit über 1100 Delegierten und 85 Ausstellern stellte die zwölfte Information Online auch 2005 wieder die im Raum Asien und Pazifik größte und renommierteste regionale Fachmesse für den Informationsbereich dar. Alle zwei Jahre veranstaltet der australische Informationsberufe-Verband ALIA in Sydney die Tagung mit Fachreferenten aus Australien, Asien, Europa und USA. An drei bis fünf Tagen kommen hier Bibliothekare und Informationsspezialisten aus Australien und Neuseeland, Indien, Malaysien, Amerika, und Europa zusammen, um sich anhand von Vorträgen, Workshops, einer Fachausstellung und reichlich Gelegenheiten für informelles Networking einen Überblick über den sich rasant entwickelnden Markt des elektronischen Informationsmanagement und der Informationsversorgung zu verschaffen. 60 Referenten und neun Hauptredner (Angela Abell, Kate Andrews, Liesle Capper, Peter Crowe, Prof. Brian Fitzgerald, David Hawking, Mary Lee Kennedy, Hemant Manohar, Joan Frye Williams) lieferten Forschungsergebnisse, Fallstudien, Fortschrifttsberichte und programmatische Thesen aus den Themenbereichen Informationsarchitektur, Online Archive, Content Management Systeme, Urheberrecht und WWW, Web Services für Bibliotheken und Informationsstellen, Benutzungsschemata für Web-Technologien, Schnittstellen, Datenpool, Bibliotheksautomation, Referenzservice online, Metadaten für Informationssysteme und für Organisationen, Wissenschaftliches Publizieren, Open Access, Knowledge Management und intellektuelles Kapital, Benutzerpsychologie, Online lernen, Berufsbild Informationsspezialist. Ein Drittel der Beiträge beschäftigte sich mit Fragen rund um Information beziehungsweise Knowledge Discovery Search, Search und nochmals Search. Dreht sich angesichts der kommerziellen Erfolge von Google und Konsorten denn alles nur noch um die Websuche?
    Date
    22. 5.2005 13:51:43
  8. Park, E.-K.; Ra, D.-Y.; Jang, M.-G.: Techniques for improving web retrieval effectiveness (2005) 0.04
    0.041710816 = product of:
      0.06256622 = sum of:
        0.038683258 = weight(_text_:management in 1060) [ClassicSimilarity], result of:
          0.038683258 = score(doc=1060,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.22344214 = fieldWeight in 1060, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.046875 = fieldNorm(doc=1060)
        0.02388296 = product of:
          0.04776592 = sum of:
            0.04776592 = weight(_text_:system in 1060) [ClassicSimilarity], result of:
              0.04776592 = score(doc=1060,freq=4.0), product of:
                0.16177002 = queryWeight, product of:
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.051362853 = queryNorm
                0.29527056 = fieldWeight in 1060, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1060)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    This paper talks about several schemes for improving retrieval effectiveness that can be used in the named page finding tasks of web information retrieval (Overview of the TREC-2002 web track. In: Proceedings of the Eleventh Text Retrieval Conference TREC-2002, NIST Special Publication #500-251, 2003). These methods were applied on top of the basic information retrieval model as additional mechanisms to upgrade the system. Use of the title of web pages was found to be effective. It was confirmed that anchor texts of incoming links was beneficial as suggested in other works. Sentence-query similarity is a new type of information proposed by us and was identified to be the best information to take advantage of. Stratifying and re-ranking the retrieval list based on the maximum count of index terms in common between a sentence and a query resulted in significant improvement of performance. To demonstrate these facts a large-scale web information retrieval system was developed and used for experimentation.
    Source
    Information processing and management. 41(2005) no.5, S.1207-1224
  9. Ding, L.; Finin, T.; Joshi, A.; Peng, Y.; Cost, R.S.; Sachs, J.; Pan, R.; Reddivari, P.; Doshi, V.: Swoogle : a Semantic Web search and metadata engine (2004) 0.04
    0.041710816 = product of:
      0.06256622 = sum of:
        0.038683258 = weight(_text_:management in 4704) [ClassicSimilarity], result of:
          0.038683258 = score(doc=4704,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.22344214 = fieldWeight in 4704, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.046875 = fieldNorm(doc=4704)
        0.02388296 = product of:
          0.04776592 = sum of:
            0.04776592 = weight(_text_:system in 4704) [ClassicSimilarity], result of:
              0.04776592 = score(doc=4704,freq=4.0), product of:
                0.16177002 = queryWeight, product of:
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.051362853 = queryNorm
                0.29527056 = fieldWeight in 4704, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4704)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    Swoogle is a crawler-based indexing and retrieval system for the Semantic Web, i.e., for Web documents in RDF or OWL. It extracts metadata for each discovered document, and computes relations between documents. Discovered documents are also indexed by an information retrieval system which can use either character N-Gram or URIrefs as keywords to find relevant documents and to compute the similarity among a set of documents. One of the interesting properties we compute is rank, a measure of the importance of a Semantic Web document.
    Source
    CIKM '04 Proceedings of the thirteenth ACM international conference on Information and knowledge management
  10. Huvila, I.: Affective capitalism of knowing and the society of search engine (2016) 0.04
    0.03970675 = product of:
      0.059560128 = sum of:
        0.038683258 = weight(_text_:management in 3246) [ClassicSimilarity], result of:
          0.038683258 = score(doc=3246,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.22344214 = fieldWeight in 3246, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.046875 = fieldNorm(doc=3246)
        0.020876871 = product of:
          0.041753743 = sum of:
            0.041753743 = weight(_text_:22 in 3246) [ClassicSimilarity], result of:
              0.041753743 = score(doc=3246,freq=2.0), product of:
                0.17986396 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051362853 = queryNorm
                0.23214069 = fieldWeight in 3246, 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=3246)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Date
    20. 1.2015 18:30:22
    Source
    Aslib journal of information management. 68(2016) no.5, S.566-588
  11. White, R.W.; Jose, J.M.; Ruthven, I.: ¬A task-oriented study on the influencing effects of query-biased summarisation in web searching (2003) 0.04
    0.037740998 = product of:
      0.056611493 = sum of:
        0.032236047 = weight(_text_:management in 1081) [ClassicSimilarity], result of:
          0.032236047 = score(doc=1081,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.18620178 = fieldWeight in 1081, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1081)
        0.024375446 = product of:
          0.048750892 = sum of:
            0.048750892 = weight(_text_:system in 1081) [ClassicSimilarity], result of:
              0.048750892 = score(doc=1081,freq=6.0), product of:
                0.16177002 = queryWeight, product of:
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.051362853 = queryNorm
                0.30135927 = fieldWeight in 1081, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1081)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    The aim of the work described in this paper is to evaluate the influencing effects of query-biased summaries in web searching. For this purpose, a summarisation system has been developed, and a summary tailored to the user's query is generated automatically for each document retrieved. The system aims to provide both a better means of assessing document relevance than titles or abstracts typical of many web search result lists. Through visiting each result page at retrieval-time, the system provides the user with an idea of the current page content and thus deals with the dynamic nature of the web. To examine the effectiveness of this approach, a task-oriented, comparative evaluation between four different web retrieval systems was performed; two that use query-biased summarisation, and two that use the standard ranked titles/abstracts approach. The results from the evaluation indicate that query-biased summarisation techniques appear to be more useful and effective in helping users gauge document relevance than the traditional ranked titles/abstracts approach. The same methodology was used to compare the effectiveness of two of the web's major search engines; AltaVista and Google.
    Source
    Information processing and management. 39(2003) no.5, S.689-706
  12. Jansen, B.J.; Molina, P.R.: ¬The effectiveness of Web search engines for retrieving relevant ecommerce links (2006) 0.04
    0.03704738 = product of:
      0.055571064 = sum of:
        0.038683258 = weight(_text_:management in 983) [ClassicSimilarity], result of:
          0.038683258 = score(doc=983,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.22344214 = fieldWeight in 983, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.046875 = fieldNorm(doc=983)
        0.016887804 = product of:
          0.03377561 = sum of:
            0.03377561 = weight(_text_:system in 983) [ClassicSimilarity], result of:
              0.03377561 = score(doc=983,freq=2.0), product of:
                0.16177002 = queryWeight, product of:
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.051362853 = queryNorm
                0.20878783 = fieldWeight in 983, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.046875 = fieldNorm(doc=983)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    Ecommerce is developing into a fast-growing channel for new business, so a strong presence in this domain could prove essential to the success of numerous commercial organizations. However, there is little research examining ecommerce at the individual customer level, particularly on the success of everyday ecommerce searches. This is critical for the continued success of online commerce. The purpose of this research is to evaluate the effectiveness of search engines in the retrieval of relevant ecommerce links. The study examines the effectiveness of five different types of search engines in response to ecommerce queries by comparing the engines' quality of ecommerce links using topical relevancy ratings. This research employs 100 ecommerce queries, five major search engines, and more than 3540 Web links. The findings indicate that links retrieved using an ecommerce search engine are significantly better than those obtained from most other engines types but do not significantly differ from links obtained from a Web directory service. We discuss the implications for Web system design and ecommerce marketing campaigns.
    Source
    Information processing and management. 42(2006) no.4, S.1075-1098
  13. Ardo, A.; Lundberg, S.: ¬A regional distributed WWW search and indexing service : the DESIRE way (1998) 0.04
    0.03643499 = product of:
      0.109304965 = sum of:
        0.109304965 = sum of:
          0.06755122 = weight(_text_:system in 4190) [ClassicSimilarity], result of:
            0.06755122 = score(doc=4190,freq=8.0), product of:
              0.16177002 = queryWeight, product of:
                3.1495528 = idf(docFreq=5152, maxDocs=44218)
                0.051362853 = queryNorm
              0.41757566 = fieldWeight in 4190, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                3.1495528 = idf(docFreq=5152, maxDocs=44218)
                0.046875 = fieldNorm(doc=4190)
          0.041753743 = weight(_text_:22 in 4190) [ClassicSimilarity], result of:
            0.041753743 = score(doc=4190,freq=2.0), product of:
              0.17986396 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.051362853 = queryNorm
              0.23214069 = fieldWeight in 4190, 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=4190)
      0.33333334 = coord(1/3)
    
    Abstract
    Creates an open, metadata aware system for distributed, collaborative WWW indexing. The system has 3 main components: a harvester (for collecting information), a database (for making the collection searchable), and a user interface (for making the information available). all components can be distributed across networked computers, thus supporting scalability. The system is metadata aware and thus allows searches on several fields including title, document author and URL. Nordic Web Index (NWI) is an application using this system to create a regional Nordic Web-indexing service. NWI is built using 5 collaborating service points within the Nordic countries. The NWI databases can be used to build additional services
    Date
    1. 8.1996 22:08:06
  14. Hancock, B.: Subject-specific search engines : using the Harvest system to gather and maintain information on the Internet (1998) 0.03
    0.034813207 = product of:
      0.104439616 = sum of:
        0.104439616 = sum of:
          0.055726912 = weight(_text_:system in 3238) [ClassicSimilarity], result of:
            0.055726912 = score(doc=3238,freq=4.0), product of:
              0.16177002 = queryWeight, product of:
                3.1495528 = idf(docFreq=5152, maxDocs=44218)
                0.051362853 = queryNorm
              0.34448233 = fieldWeight in 3238, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.1495528 = idf(docFreq=5152, maxDocs=44218)
                0.0546875 = fieldNorm(doc=3238)
          0.0487127 = weight(_text_:22 in 3238) [ClassicSimilarity], result of:
            0.0487127 = score(doc=3238,freq=2.0), product of:
              0.17986396 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.051362853 = queryNorm
              0.2708308 = fieldWeight in 3238, 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=3238)
      0.33333334 = coord(1/3)
    
    Abstract
    The increasing expansion of the Internet has made resources available to users in sometimes unmanageable abundance. To help users manage this proliferation of information, librarians have begun to add URLs to their home pages. As well, specialized search engines are being used to retrieve information from selected sources in aneffort to return pertinent results. Describes the Harvest system which has been used to develop Index Antiquus, a specialized engine, for the classics and mediaeval studies. Presents a working example of how to search Index Antiquus
    Date
    6. 3.1997 16:22:15
  15. Rieh, S.Y.; Kim, Y.-M.; Markey, K.: Amount of invested mental effort (AIME) in online searching (2012) 0.03
    0.03475901 = product of:
      0.052138515 = sum of:
        0.032236047 = weight(_text_:management in 2726) [ClassicSimilarity], result of:
          0.032236047 = score(doc=2726,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.18620178 = fieldWeight in 2726, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2726)
        0.01990247 = product of:
          0.03980494 = sum of:
            0.03980494 = weight(_text_:system in 2726) [ClassicSimilarity], result of:
              0.03980494 = score(doc=2726,freq=4.0), product of:
                0.16177002 = queryWeight, product of:
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.051362853 = queryNorm
                0.24605882 = fieldWeight in 2726, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2726)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    This research investigates how people's perceptions of information retrieval (IR) systems, their perceptions of search tasks, and their perceptions of self-efficacy influence the amount of invested mental effort (AIME) they put into using two different IR systems: a Web search engine and a library system. It also explores the impact of mental effort on an end user's search experience. To assess AIME in online searching, two experiments were conducted using these methods: Experiment 1 relied on self-reports and Experiment 2 employed the dual-task technique. In both experiments, data were collected through search transaction logs, a pre-search background questionnaire, a post-search questionnaire and an interview. Important findings are these: (1) subjects invested greater mental effort searching a library system than searching the Web; (2) subjects put little effort into Web searching because of their high sense of self-efficacy in their searching ability and their perception of the easiness of the Web; (3) subjects did not recognize that putting mental effort into searching was something needed to improve the search results; and (4) data collected from multiple sources proved to be effective for assessing mental effort in online searching.
    Source
    Information processing and management. 48(2012) no.6, S.1136-1150
  16. Alqaraleh, S.; Ramadan, O.; Salamah, M.: Efficient watcher based web crawler design (2015) 0.03
    0.033088963 = product of:
      0.049633443 = sum of:
        0.032236047 = weight(_text_:management in 1627) [ClassicSimilarity], result of:
          0.032236047 = score(doc=1627,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.18620178 = fieldWeight in 1627, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1627)
        0.017397394 = product of:
          0.03479479 = sum of:
            0.03479479 = weight(_text_:22 in 1627) [ClassicSimilarity], result of:
              0.03479479 = score(doc=1627,freq=2.0), product of:
                0.17986396 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051362853 = queryNorm
                0.19345059 = fieldWeight in 1627, 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=1627)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Date
    20. 1.2015 18:30:22
    Source
    Aslib journal of information management. 67(2015) no.6, S.663-686
  17. Sachse, J.: ¬The influence of snippet length on user behavior in mobile web search (2019) 0.03
    0.033088963 = product of:
      0.049633443 = sum of:
        0.032236047 = weight(_text_:management in 5493) [ClassicSimilarity], result of:
          0.032236047 = score(doc=5493,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.18620178 = fieldWeight in 5493, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5493)
        0.017397394 = product of:
          0.03479479 = sum of:
            0.03479479 = weight(_text_:22 in 5493) [ClassicSimilarity], result of:
              0.03479479 = score(doc=5493,freq=2.0), product of:
                0.17986396 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051362853 = queryNorm
                0.19345059 = fieldWeight in 5493, 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=5493)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Date
    20. 1.2015 18:30:22
    Source
    Aslib journal of information management. 71(2019) no.3, S.325-343
  18. Spink, A.; Park, M.; Jansen, B.J.; Pedersen, J.: Elicitation and use of relevance feedback information (2006) 0.03
    0.030872812 = product of:
      0.046309218 = sum of:
        0.032236047 = weight(_text_:management in 967) [ClassicSimilarity], result of:
          0.032236047 = score(doc=967,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.18620178 = fieldWeight in 967, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=967)
        0.01407317 = product of:
          0.02814634 = sum of:
            0.02814634 = weight(_text_:system in 967) [ClassicSimilarity], result of:
              0.02814634 = score(doc=967,freq=2.0), product of:
                0.16177002 = queryWeight, product of:
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.051362853 = queryNorm
                0.17398985 = fieldWeight in 967, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=967)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    A user's single session with a Web search engine or information retrieval (IR) system may consist of seeking information on single or multiple topics, and switch between tasks or multitasking information behavior. Most Web search sessions consist of two queries of approximately two words. However, some Web search sessions consist of three or more queries. We present findings from two studies. First, a study of two-query search sessions on the AltaVista Web search engine, and second, a study of three or more query search sessions on the AltaVista Web search engine. We examine the degree of multitasking search and information task switching during these two sets of AltaVista Web search sessions. A sample of two-query and three or more query sessions were filtered from AltaVista transaction logs from 2002 and qualitatively analyzed. Sessions ranged in duration from less than a minute to a few hours. Findings include: (1) 81% of two-query sessions included multiple topics, (2) 91.3% of three or more query sessions included multiple topics, (3) there are a broad variety of topics in multitasking search sessions, and (4) three or more query sessions sometimes contained frequent topic changes. Multitasking is found to be a growing element in Web searching. This paper proposes an approach to interactive information retrieval (IR) contextually within a multitasking framework. The implications of our findings for Web design and further research are discussed.
    Source
    Information processing and management. 42(2006) no.1, S.264-275
  19. Hoeber, O.; Yang, X.D.: Evaluating WordBars in exploratory Web search scenarios (2008) 0.03
    0.030872812 = product of:
      0.046309218 = sum of:
        0.032236047 = weight(_text_:management in 2046) [ClassicSimilarity], result of:
          0.032236047 = score(doc=2046,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.18620178 = fieldWeight in 2046, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2046)
        0.01407317 = product of:
          0.02814634 = sum of:
            0.02814634 = weight(_text_:system in 2046) [ClassicSimilarity], result of:
              0.02814634 = score(doc=2046,freq=2.0), product of:
                0.16177002 = queryWeight, product of:
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.051362853 = queryNorm
                0.17398985 = fieldWeight in 2046, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2046)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    Web searchers commonly have difficulties crafting queries to fulfill their information needs; even after they are able to craft a query, they often find it challenging to evaluate the results of their Web searches. Sources of these problems include the lack of support for constructing and refining queries, and the static nature of the list-based representations of Web search results. WordBars has been developed to assist users in their Web search and exploration tasks. This system provides a visual representation of the frequencies of the terms found in the first 100 document surrogates returned from an initial query, in the form of a histogram. Exploration of the search results is supported through term selection in the histogram, resulting in a re-sorting of the search results based on the use of the selected terms in the document surrogates. Terms from the histogram can be easily added or removed from the query, generating a new set of search results. Examples illustrate how WordBars can provide valuable support for query refinement and search results exploration, both when vague and specific initial queries are provided. User evaluations with both expert and intermediate Web searchers illustrate the benefits of the interactive exploration features of WordBars in terms of effectiveness as well as subjective measures. Although differences were found in the demographics of these two user groups, both were able to benefit from the features of WordBars.
    Source
    Information processing and management. 44(2008) no.2, S.485-510
  20. Bilal, D.; Gwizdka, J.: Children's query types and reformulations in Google search (2018) 0.03
    0.030872812 = product of:
      0.046309218 = sum of:
        0.032236047 = weight(_text_:management in 5047) [ClassicSimilarity], result of:
          0.032236047 = score(doc=5047,freq=2.0), product of:
            0.17312427 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051362853 = queryNorm
            0.18620178 = fieldWeight in 5047, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5047)
        0.01407317 = product of:
          0.02814634 = sum of:
            0.02814634 = weight(_text_:system in 5047) [ClassicSimilarity], result of:
              0.02814634 = score(doc=5047,freq=2.0), product of:
                0.16177002 = queryWeight, product of:
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.051362853 = queryNorm
                0.17398985 = fieldWeight in 5047, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.1495528 = idf(docFreq=5152, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=5047)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    We investigated the searching behaviors of twenty-four children in grades 6, 7, and 8 (ages 11-13) in finding information on three types of search tasks in Google. Children conducted 72 search sessions and issued 150 queries. Children's phrase- and question-like queries combined were much more prevalent than keyword queries (70% vs. 30%, respectively). Fifty two percent of the queries were reformulations (33 sessions). We classified children's query reformulation types into five classes based on the taxonomy by Liu et al. (2010). We found that most query reformulations were by Substitution and Specialization, and that children hardly repeated queries. We categorized children's queries by task facets and examined the way they expressed these facets in their query formulations and reformulations. Oldest children tended to target the general topic of search tasks in their queries most frequently, whereas younger children expressed one of the two facets more often. We assessed children's achieved task outcomes using the search task outcomes measure we developed. Children were mostly more successful on the fact-finding and fully self-generated task and partially successful on the research-oriented task. Query type, reformulation type, achieved task outcomes, and expressing task facets varied by task type and grade level. There was no significant effect of query length in words or of the number of queries issued on search task outcomes. The study findings have implications for human intervention, digital literacy, search task literacy, as well as for system intervention to support children's query formulation and reformulation during interaction with Google.
    Source
    Information processing and management. 54(2018) no.6, S.1022-1041

Years

Languages

  • e 169
  • d 118
  • f 1
  • nl 1
  • More… Less…

Types

  • a 252
  • el 24
  • m 17
  • x 5
  • p 2
  • r 2
  • s 2
  • More… Less…

Subjects