Bar-Ilan, J.; Levene, M.; Mat-Hassan, M.: Methods for evaluating dynamic changes in search engine rankings : a case study (2006)
0.00
0.00443345 = product of:
0.0088669 = sum of:
0.0088669 = product of:
0.0177338 = sum of:
0.0177338 = weight(_text_:m in 616) [ClassicSimilarity], result of:
0.0177338 = score(doc=616,freq=4.0), product of:
0.114023164 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.045820985 = queryNorm
0.15552804 = fieldWeight in 616, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.03125 = fieldNorm(doc=616)
0.5 = coord(1/2)
0.5 = coord(1/2)