Aigrain, P.; Longueville, V.: ¬A model for the evaluation of expansion techniques in information retrieval systems (1994)
0.01
0.0063869115 = product of:
0.012773823 = sum of:
0.012773823 = product of:
0.025547646 = sum of:
0.025547646 = weight(_text_:4 in 5331) [ClassicSimilarity], result of:
0.025547646 = score(doc=5331,freq=2.0), product of:
0.14201462 = queryWeight, product of:
2.7136984 = idf(docFreq=7967, maxDocs=44218)
0.0523325 = queryNorm
0.17989448 = fieldWeight in 5331, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.7136984 = idf(docFreq=7967, maxDocs=44218)
0.046875 = fieldNorm(doc=5331)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science. 45(1994) no.4, S.225-234