Ding, W.; Marchionini, G.: ¬A comparative study of Web search service performance (1996)
0.01
0.007995294 = product of:
0.03997647 = sum of:
0.03997647 = weight(_text_:g in 4807) [ClassicSimilarity], result of:
0.03997647 = score(doc=4807,freq=2.0), product of:
0.1605568 = queryWeight, product of:
3.7559474 = idf(docFreq=2809, maxDocs=44218)
0.04274735 = queryNorm
0.24898648 = fieldWeight in 4807, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.7559474 = idf(docFreq=2809, maxDocs=44218)
0.046875 = fieldNorm(doc=4807)
0.2 = coord(1/5)