Search (4 results, page 1 of 1)

  • × author_ss:"Crestani, F."
  • × year_i:[2000 TO 2010}
  1. Crestani, F.; Du, H.: Written versus spoken queries : a qualitative and quantitative comparative analysis (2006) 0.04 
    0.039561242 = sum of:
  0.018146584 = product of:
    0.072586335 = sum of:
      0.072586335 = weight(_text_:authors in 5047) [ClassicSimilarity], result of:
        0.072586335 = score(doc=5047,freq=2.0), product of:
          0.24018547 = queryWeight, product of:
            4.558814 = idf(docFreq=1258, maxDocs=44218)
            0.052685954 = queryNorm
          0.30220953 = fieldWeight in 5047, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.558814 = idf(docFreq=1258, maxDocs=44218)
            0.046875 = fieldNorm(doc=5047)
    0.25 = coord(1/4)
  0.021414658 = product of:
    0.042829316 = sum of:
      0.042829316 = weight(_text_:22 in 5047) [ClassicSimilarity], result of:
        0.042829316 = score(doc=5047,freq=2.0), product of:
          0.18449724 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.052685954 = queryNorm
          0.23214069 = fieldWeight in 5047, 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=5047)
    0.5 = coord(1/2)
    Abstract
    The authors report on an experimental study on the differences between spoken and written queries. A set of written and spontaneous spoken queries are generated by users from written topics. These two sets of queries are compared in qualitative terms and in terms of their retrieval effectiveness. Written and spoken queries are compared in terms of length, duration, and part of speech. In addition, assuming perfect transcription of the spoken queries, written and spoken queries are compared in terms of their aptitude to describe relevant documents. The retrieval effectiveness of spoken and written queries is compared using three different information retrieval models. The results show that using speech to formulate one's information need provides a way to express it more naturally and encourages the formulation of longer queries. Despite that, longer spoken queries do not seem to significantly improve retrieval effectiveness compared with written queries.
    Date
    5. 6.2006 11:22:23
  2. 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) 0.03 
    0.032228462 = product of:
  0.064456925 = sum of:
    0.064456925 = sum of:
      0.021627607 = weight(_text_:m in 1451) [ClassicSimilarity], result of:
        0.021627607 = score(doc=1451,freq=2.0), product of:
          0.13110629 = queryWeight, product of:
            2.4884486 = idf(docFreq=9980, maxDocs=44218)
            0.052685954 = queryNorm
          0.1649624 = fieldWeight in 1451, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.4884486 = idf(docFreq=9980, maxDocs=44218)
            0.046875 = fieldNorm(doc=1451)
      0.042829316 = weight(_text_:22 in 1451) [ClassicSimilarity], result of:
        0.042829316 = score(doc=1451,freq=2.0), product of:
          0.18449724 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.052685954 = 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)
    Date
    22. 3.2003 19:27:36
  3. Bache, R.; Baillie, M.; Crestani, F.: Measuring the likelihood property of scoring functions in general retrieval models (2009) 0.01 
    0.006308052 = product of:
  0.012616104 = sum of:
    0.012616104 = product of:
      0.025232209 = sum of:
        0.025232209 = weight(_text_:m in 2860) [ClassicSimilarity], result of:
          0.025232209 = score(doc=2860,freq=2.0), product of:
            0.13110629 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.052685954 = queryNorm
            0.19245613 = fieldWeight in 2860, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2860)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  4. Simeoni, F.; Yakici, M.; Neely, S.; Crestani, F.: Metadata harvesting for content-based distributed information retrieval (2008) 0.00 
    0.0045057517 = product of:
  0.009011503 = sum of:
    0.009011503 = product of:
      0.018023007 = sum of:
        0.018023007 = weight(_text_:m in 1336) [ClassicSimilarity], result of:
          0.018023007 = score(doc=1336,freq=2.0), product of:
            0.13110629 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.052685954 = queryNorm
            0.13746867 = fieldWeight in 1336, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1336)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Authors

Themes