Search (51 results, page 2 of 3)

  • × language_ss:"e"
  • × theme_ss:"Retrievalalgorithmen"
  1. Van der Veer Martens, B.; Fleet, C. van: Opening the black box of "relevance work" : a domain analysis (2012) 0.01 
    0.0055109067 = product of:
  0.03306544 = sum of:
    0.03306544 = weight(_text_:b in 247) [ClassicSimilarity], result of:
      0.03306544 = score(doc=247,freq=2.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.23486741 = fieldWeight in 247, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.046875 = fieldNorm(doc=247)
  0.16666667 = coord(1/6)
  2. Henzinger, M.R.: Link analysis in Web information retrieval (2000) 0.01 
    0.005195733 = product of:
  0.031174397 = sum of:
    0.031174397 = weight(_text_:b in 801) [ClassicSimilarity], result of:
      0.031174397 = score(doc=801,freq=4.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.22143513 = fieldWeight in 801, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03125 = fieldNorm(doc=801)
  0.16666667 = coord(1/6)
    Content
    The goal of information retrieval is to find all documents relevant for a user query in a collection of documents. Decades of research in information retrieval were successful in developing and refining techniques that are solely word-based (see e.g., [2]). With the advent of the web new sources of information became available, one of them being the hyperlinks between documents and records of user behavior. To be precise, hypertexts (i.e., collections of documents connected by hyperlinks) have existed and have been studied for a long time. What was new was the large number of hyperlinks created by independent individuals. Hyperlinks provide a valuable source of information for web information retrieval as we will show in this article. This area of information retrieval is commonly called link analysis. Why would one expect hyperlinks to be useful? Ahyperlink is a reference of a web page B that is contained in a web page A. When the hyperlink is clicked on in a web browser, the browser displays page B. This functionality alone is not helpful for web information retrieval. However, the way hyperlinks are typically used by authors of web pages can give them valuable information content. Typically, authors create links because they think they will be useful for the readers of the pages. Thus, links are usually either navigational aids that, for example, bring the reader back to the homepage of the site, or links that point to pages whose content augments the content of the current page. The second kind of links tend to point to high-quality pages that might be on the same topic as the page containing the link.
  3. Chen, H.; Lally, A.M.; Zhu, B.; Chau, M.: HelpfulMed : Intelligent searching for medical information over the Internet (2003) 0.00 
    0.0045924224 = product of:
  0.027554534 = sum of:
    0.027554534 = weight(_text_:b in 1615) [ClassicSimilarity], result of:
      0.027554534 = score(doc=1615,freq=2.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.19572285 = fieldWeight in 1615, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1615)
  0.16666667 = coord(1/6)
  4. Chen, Z.; Meng, X.; Fowler, R.H.; Zhu, B.: Real-time adaptive feature and document learning for Web search (2001) 0.00 
    0.0045924224 = product of:
  0.027554534 = sum of:
    0.027554534 = weight(_text_:b in 5209) [ClassicSimilarity], result of:
      0.027554534 = score(doc=5209,freq=2.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.19572285 = fieldWeight in 5209, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5209)
  0.16666667 = coord(1/6)
  5. Dannenberg, R.B.; Birmingham, W.P.; Pardo, B.; Hu, N.; Meek, C.; Tzanetakis, G.: ¬A comparative evaluation of search techniques for query-by-humming using the MUSART testbed (2007) 0.00 
    0.0045924224 = product of:
  0.027554534 = sum of:
    0.027554534 = weight(_text_:b in 269) [ClassicSimilarity], result of:
      0.027554534 = score(doc=269,freq=2.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.19572285 = fieldWeight in 269, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.0390625 = fieldNorm(doc=269)
  0.16666667 = coord(1/6)
  6. Chen, Z.; Fu, B.: On the complexity of Rocchio's similarity-based relevance feedback algorithm (2007) 0.00 
    0.0045924224 = product of:
  0.027554534 = sum of:
    0.027554534 = weight(_text_:b in 578) [ClassicSimilarity], result of:
      0.027554534 = score(doc=578,freq=2.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.19572285 = fieldWeight in 578, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.0390625 = fieldNorm(doc=578)
  0.16666667 = coord(1/6)
  7. Symonds, M.; Bruza, P.; Zuccon, G.; Koopman, B.; Sitbon, L.; Turner, I.: Automatic query expansion : a structural linguistic perspective (2014) 0.00 
    0.0045924224 = product of:
  0.027554534 = sum of:
    0.027554534 = weight(_text_:b in 1338) [ClassicSimilarity], result of:
      0.027554534 = score(doc=1338,freq=2.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.19572285 = fieldWeight in 1338, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1338)
  0.16666667 = coord(1/6)
  8. Xu, B.; Lin, H.; Lin, Y.: Assessment of learning to rank methods for query expansion (2016) 0.00 
    0.0045924224 = product of:
  0.027554534 = sum of:
    0.027554534 = weight(_text_:b in 2929) [ClassicSimilarity], result of:
      0.027554534 = score(doc=2929,freq=2.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.19572285 = fieldWeight in 2929, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2929)
  0.16666667 = coord(1/6)
  9. Efthimiadis, E.N.: Interactive query expansion : a user-based evaluation in a relevance feedback environment (2000) 0.00 
    0.0036739379 = product of:
  0.022043627 = sum of:
    0.022043627 = weight(_text_:b in 5701) [ClassicSimilarity], result of:
      0.022043627 = score(doc=5701,freq=2.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.15657827 = fieldWeight in 5701, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03125 = fieldNorm(doc=5701)
  0.16666667 = coord(1/6)
    Abstract
    A user-centered investigation of interactive query expansion within the context of a relevance feedback system is presented in this article. Data were collected from 25 searches using the INSPEC database. The data collection mechanisms included questionnaires, transaction logs, and relevance evaluations. The results discuss issues that relate to query expansion, retrieval effectiveness, the correspondence of the on-line-to-off-line relevance judgments, and the selection of terms for query expansion by users (interactive query expansion). The main conclusions drawn from the results of the study are that: (1) one-third of the terms presented to users in a list of candidate terms for query expansion was identified by the users as potentially useful for query expansion. (2) These terms were mainly judged as either variant expressions (synonyms) or alternative (related) terms to the initial query terms. However, a substantial portion of the selected terms were identified as representing new ideas. (3) The relationships identified between the five best terms selected by the users for query expansion and the initial query terms were that: (a) 34% of the query expansion terms have no relationship or other type of correspondence with a query term; (b) 66% of the remaining query expansion terms have a relationship to the query terms. These relationships were: narrower term (46%), broader term (3%), related term (17%). (4) The results provide evidence for the effectiveness of interactive query expansion. The initial search produced on average three highly relevant documents; the query expansion search produced on average nine further highly relevant documents. The conclusions highlight the need for more research on: interactive query expansion, the comparative evaluation of automatic vs. interactive query expansion, the study of weighted Webbased or Web-accessible retrieval systems in operational environments, and for user studies in searching ranked retrieval systems in general
  10. Henzinger, M.R.: Hyperlink analysis for the Web (2001) 0.00 
    0.0036739379 = product of:
  0.022043627 = sum of:
    0.022043627 = weight(_text_:b in 8) [ClassicSimilarity], result of:
      0.022043627 = score(doc=8,freq=2.0), product of:
        0.14078343 = queryWeight, product of:
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03973608 = queryNorm
        0.15657827 = fieldWeight in 8, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.542962 = idf(docFreq=3476, maxDocs=44218)
          0.03125 = fieldNorm(doc=8)
  0.16666667 = coord(1/6)
    Content
    Information retrieval is a computer science subfield whose goal is to find all documents relevant to a user query in a given collection of documents. As such, information retrieval should really be called document retrieval. Before the advent of the Web, IR systems were typically installed in libraries for use mostly by reference librarians. The retrieval algorithm for these systems was usually based exclusively on analysis of the words in the document. The Web changed all this. Now each Web user has access to various search engines whose retrieval algorithms often use not only the words in the documents but also information like the hyperlink structure of the Web or markup language tags. How are hyperlinks useful? The hyperlink functionality alone-that is, the hyperlink to Web page B that is contained in Web page A-is not directly useful in information retrieval. However, the way Web page authors use hyperlinks can give them valuable information content. Authors usually create hyperlinks they think will be useful to readers. Some may be navigational aids that, for example, take the reader back to the site's home page; others provide access to documents that augment the content of the current page. The latter tend to point to highquality pages that might be on the same topic as the page containing the hyperlink. Web information retrieval systems can exploit this information to refine searches for relevant documents. Hyperlink analysis significantly improves the relevance of the search results, so much so that all major Web search engines claim to use some type of hyperlink analysis. However, the search engines do not disclose details about the type of hyperlink analysis they perform- mostly to avoid manipulation of search results by Web-positioning companies. In this article, I discuss how hyperlink analysis can be applied to ranking algorithms, and survey other ways Web search engines can use this analysis.
  11. MacFarlane, A.; Robertson, S.E.; McCann, J.A.: Parallel computing for passage retrieval (2004) 0.00 
    0.003589127 = product of:
  0.021534761 = sum of:
    0.021534761 = product of:
      0.043069523 = sum of:
        0.043069523 = weight(_text_:22 in 5108) [ClassicSimilarity], result of:
          0.043069523 = score(doc=5108,freq=2.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.30952093 = fieldWeight in 5108, 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=5108)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    20. 1.2007 18:30:22
  12. Faloutsos, C.: Signature files (1992) 0.00 
    0.003589127 = product of:
  0.021534761 = sum of:
    0.021534761 = product of:
      0.043069523 = sum of:
        0.043069523 = weight(_text_:22 in 3499) [ClassicSimilarity], result of:
          0.043069523 = score(doc=3499,freq=2.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.30952093 = fieldWeight in 3499, 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=3499)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    7. 5.1999 15:22:48
  13. Losada, D.E.; Barreiro, A.: Emebedding term similarity and inverse document frequency into a logical model of information retrieval (2003) 0.00 
    0.003589127 = product of:
  0.021534761 = sum of:
    0.021534761 = product of:
      0.043069523 = sum of:
        0.043069523 = weight(_text_:22 in 1422) [ClassicSimilarity], result of:
          0.043069523 = score(doc=1422,freq=2.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.30952093 = fieldWeight in 1422, 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=1422)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    22. 3.2003 19:27:23
  14. Bornmann, L.; Mutz, R.: From P100 to P100' : a new citation-rank approach (2014) 0.00 
    0.003589127 = product of:
  0.021534761 = sum of:
    0.021534761 = product of:
      0.043069523 = sum of:
        0.043069523 = weight(_text_:22 in 1431) [ClassicSimilarity], result of:
          0.043069523 = score(doc=1431,freq=2.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.30952093 = fieldWeight in 1431, 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=1431)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    22. 8.2014 17:05:18
  15. Ravana, S.D.; Rajagopal, P.; Balakrishnan, V.: Ranking retrieval systems using pseudo relevance judgments (2015) 0.00 
    0.0031723701 = product of:
  0.01903422 = sum of:
    0.01903422 = product of:
      0.03806844 = sum of:
        0.03806844 = weight(_text_:22 in 2591) [ClassicSimilarity], result of:
          0.03806844 = score(doc=2591,freq=4.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.27358043 = fieldWeight in 2591, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2591)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    20. 1.2015 18:30:22
    18. 9.2018 18:22:56
  16. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.00 
    0.0031404858 = product of:
  0.018842915 = sum of:
    0.018842915 = product of:
      0.03768583 = sum of:
        0.03768583 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
          0.03768583 = score(doc=1319,freq=2.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.2708308 = fieldWeight in 1319, 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=1319)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    1. 8.1996 22:08:06
  17. Joss, M.W.; Wszola, S.: ¬The engines that can : text search and retrieval software, their strategies, and vendors (1996) 0.00 
    0.0026918452 = product of:
  0.01615107 = sum of:
    0.01615107 = product of:
      0.03230214 = sum of:
        0.03230214 = weight(_text_:22 in 5123) [ClassicSimilarity], result of:
          0.03230214 = score(doc=5123,freq=2.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.23214069 = fieldWeight in 5123, 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=5123)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    12. 9.1996 13:56:22
  18. Kelledy, F.; Smeaton, A.F.: Signature files and beyond (1996) 0.00 
    0.0026918452 = product of:
  0.01615107 = sum of:
    0.01615107 = product of:
      0.03230214 = sum of:
        0.03230214 = weight(_text_:22 in 6973) [ClassicSimilarity], result of:
          0.03230214 = score(doc=6973,freq=2.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.23214069 = fieldWeight in 6973, 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=6973)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
  19. Crestani, F.; Dominich, S.; Lalmas, M.; Rijsbergen, C.J.K. van: Mathematical, logical, and formal methods in information retrieval : an introduction to the special issue (2003) 0.00 
    0.0026918452 = product of:
  0.01615107 = sum of:
    0.01615107 = product of:
      0.03230214 = sum of:
        0.03230214 = weight(_text_:22 in 1451) [ClassicSimilarity], result of:
          0.03230214 = score(doc=1451,freq=2.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.23214069 = fieldWeight in 1451, 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=1451)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    22. 3.2003 19:27:36
  20. Fan, W.; Fox, E.A.; Pathak, P.; Wu, H.: ¬The effects of fitness functions an genetic programming-based ranking discovery for Web search (2004) 0.00 
    0.0026918452 = product of:
  0.01615107 = sum of:
    0.01615107 = product of:
      0.03230214 = sum of:
        0.03230214 = weight(_text_:22 in 2239) [ClassicSimilarity], result of:
          0.03230214 = score(doc=2239,freq=2.0), product of:
            0.13914898 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03973608 = queryNorm
            0.23214069 = fieldWeight in 2239, 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=2239)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    31. 5.2004 19:22:06

Authors

Years

Types

  • a 50
  • m 1
  • More… Less…

Themes

Subjects

Classifications