Bar-Ilan, J.: Methods for measuring search engine performance over time (2002)
0.02
0.0241753 = product of:
0.072525896 = sum of:
0.072525896 = product of:
0.14505179 = sum of:
0.14505179 = weight(_text_:2002 in 305) [ClassicSimilarity], result of:
0.14505179 = score(doc=305,freq=5.0), product of:
0.24213143 = queryWeight, product of:
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.05648645 = queryNorm
0.5990622 = fieldWeight in 305, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.0625 = fieldNorm(doc=305)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Journal of the American Society for Information Science and technology. 53(2002) no.4, S.308-319
- Year
- 2002