Search (3 results, page 1 of 1)

Kristensen, J.; Järvelin, K.: ¬The effectiveness of a searching thesaurus in free-text searching in a full-text database (1990) 0.04

0.038774718 = product of:
  0.19387358 = sum of:
    0.19387358 = weight(_text_:thesaurus in 2043) [ClassicSimilarity], result of:
      0.19387358 = score(doc=2043,freq=2.0), product of:
        0.23732872 = queryWeight, product of:
          4.6210785 = idf(docFreq=1182, maxDocs=44218)
          0.051357865 = queryNorm
        0.81689894 = fieldWeight in 2043, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.6210785 = idf(docFreq=1182, maxDocs=44218)
          0.125 = fieldNorm(doc=2043)
  0.2 = coord(1/5)

Kristensen, J.: Expanding end-users' query statements for free text searching with a search-aid thesaurus (1993) 0.03
```
0.033579893 = product of:
  0.16789946 = sum of:
    0.16789946 = weight(_text_:thesaurus in 6621) [ClassicSimilarity], result of:
      0.16789946 = score(doc=6621,freq=6.0), product of:
        0.23732872 = queryWeight, product of:
          4.6210785 = idf(docFreq=1182, maxDocs=44218)
          0.051357865 = queryNorm
        0.7074553 = fieldWeight in 6621, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          4.6210785 = idf(docFreq=1182, maxDocs=44218)
          0.0625 = fieldNorm(doc=6621)
  0.2 = coord(1/5)
```
Abstract

Tests the effectiveness of a thesaurus as a search-aid in free text searching of a full text database. A set of queries was searched against a large full text database of newspaper articles. The thesaurus contained equivalence, hierarchical and associative relationships. Each query was searched in five modes: basic search, synonym search, narrower term search, related term search, and union of all previous searches. The searches were analyzed in terms of relative recall and precision

Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996) 0.01

0.008349938 = product of:
  0.04174969 = sum of:
    0.04174969 = weight(_text_:22 in 2230) [ClassicSimilarity], result of:
      0.04174969 = score(doc=2230,freq=2.0), product of:
        0.1798465 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051357865 = queryNorm
        0.23214069 = fieldWeight in 2230, 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=2230)
  0.2 = coord(1/5)

Source: Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR '96), Zürich, Switzerland, August 18-22, 1996. Eds.: H.P. Frei et al

Search (3 results, page 1 of 1)

Authors

Themes