Ding, Y.; Jacob, E.K.; Zhang, Z.; Foo, S.; Yan, E.; George, N.L.; Guo, L.: Perspectives on social tagging (2009)
0.04
0.04298507 = product of:
0.08597014 = sum of:
0.08597014 = product of:
0.17194028 = sum of:
0.17194028 = weight(_text_:e.k in 3290) [ClassicSimilarity], result of:
0.17194028 = score(doc=3290,freq=2.0), product of:
0.335686 = queryWeight, product of:
7.7265954 = idf(docFreq=52, maxDocs=44218)
0.043445524 = queryNorm
0.5122057 = fieldWeight in 3290, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.7265954 = idf(docFreq=52, maxDocs=44218)
0.046875 = fieldNorm(doc=3290)
0.5 = coord(1/2)
0.5 = coord(1/2)