-
Robertson, S.E.; Belkin, N.J.: Ranking in principle (1978)
0.03
0.032306403 = product of:
0.1938384 = sum of:
0.1938384 = weight(_text_:ranking in 1143) [ClassicSimilarity], result of:
0.1938384 = score(doc=1143,freq=2.0), product of:
0.20271951 = queryWeight, product of:
5.4090285 = idf(docFreq=537, maxDocs=44218)
0.03747799 = queryNorm
0.95619017 = fieldWeight in 1143, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4090285 = idf(docFreq=537, maxDocs=44218)
0.125 = fieldNorm(doc=1143)
0.16666667 = coord(1/6)
-
Robertson, S.E.: ¬The probability ranking principle in IR (1977)
0.02
0.0242298 = product of:
0.1453788 = sum of:
0.1453788 = weight(_text_:ranking in 1935) [ClassicSimilarity], result of:
0.1453788 = score(doc=1935,freq=2.0), product of:
0.20271951 = queryWeight, product of:
5.4090285 = idf(docFreq=537, maxDocs=44218)
0.03747799 = queryNorm
0.71714264 = fieldWeight in 1935, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4090285 = idf(docFreq=537, maxDocs=44218)
0.09375 = fieldNorm(doc=1935)
0.16666667 = coord(1/6)
-
Vechtomova, O.; Karamuftuoglum, M.; Robertson, S.E.: On document relevance and lexical cohesion between query terms (2006)
0.01
0.0121149 = product of:
0.0726894 = sum of:
0.0726894 = weight(_text_:ranking in 987) [ClassicSimilarity], result of:
0.0726894 = score(doc=987,freq=2.0), product of:
0.20271951 = queryWeight, product of:
5.4090285 = idf(docFreq=537, maxDocs=44218)
0.03747799 = queryNorm
0.35857132 = fieldWeight in 987, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4090285 = idf(docFreq=537, maxDocs=44218)
0.046875 = fieldNorm(doc=987)
0.16666667 = coord(1/6)
- Abstract
- Lexical cohesion is a property of text, achieved through lexical-semantic relations between words in text. Most information retrieval systems make use of lexical relations in text only to a limited extent. In this paper we empirically investigate whether the degree of lexical cohesion between the contexts of query terms' occurrences in a document is related to its relevance to the query. Lexical cohesion between distinct query terms in a document is estimated on the basis of the lexical-semantic relations (repetition, synonymy, hyponymy and sibling) that exist between there collocates - words that co-occur with them in the same windows of text. Experiments suggest significant differences between the lexical cohesion in relevant and non-relevant document sets exist. A document ranking method based on lexical cohesion shows some performance improvements.
-
Sparck Jones, K.; Walker, S.; Robertson, S.E.: ¬A probabilistic model of information retrieval : development and comparative experiments - part 1 (2000)
0.00
0.0034158952 = product of:
0.02049537 = sum of:
0.02049537 = product of:
0.06148611 = sum of:
0.06148611 = weight(_text_:29 in 4181) [ClassicSimilarity], result of:
0.06148611 = score(doc=4181,freq=2.0), product of:
0.13183585 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.03747799 = queryNorm
0.46638384 = fieldWeight in 4181, 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=4181)
0.33333334 = coord(1/3)
0.16666667 = coord(1/6)
- Date
- 27.12.2007 19:27:29
-
MacFarlane, A.; Robertson, S.E.; McCann, J.A.: Parallel computing for passage retrieval (2004)
0.00
0.0022567778 = product of:
0.013540667 = sum of:
0.013540667 = product of:
0.040622 = sum of:
0.040622 = weight(_text_:22 in 5108) [ClassicSimilarity], result of:
0.040622 = score(doc=5108,freq=2.0), product of:
0.13124153 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03747799 = 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)
0.33333334 = coord(1/3)
0.16666667 = coord(1/6)
- Date
- 20. 1.2007 18:30:22
-
Vechtomova, O.; Robertson, S.E.: ¬A domain-independent approach to finding related entities (2012)
0.00
0.0017079476 = product of:
0.010247685 = sum of:
0.010247685 = product of:
0.030743055 = sum of:
0.030743055 = weight(_text_:29 in 2733) [ClassicSimilarity], result of:
0.030743055 = score(doc=2733,freq=2.0), product of:
0.13183585 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.03747799 = queryNorm
0.23319192 = fieldWeight in 2733, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.046875 = fieldNorm(doc=2733)
0.33333334 = coord(1/3)
0.16666667 = coord(1/6)
- Date
- 27. 1.2016 18:44:29