Spink, A.; Wilson, T.; Ellis, D.; Ford, N.: Modeling users' successive searches in digital environments : a National Science Foundation/British Library funded study (1998)
0.01
0.00901964 = product of:
0.01803928 = sum of:
0.01803928 = product of:
0.03607856 = sum of:
0.03607856 = weight(_text_:n in 1255) [ClassicSimilarity], result of:
0.03607856 = score(doc=1255,freq=2.0), product of:
0.2163874 = queryWeight, product of:
4.3116565 = idf(docFreq=1611, maxDocs=44218)
0.050186608 = queryNorm
0.16673133 = fieldWeight in 1255, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.3116565 = idf(docFreq=1611, maxDocs=44218)
0.02734375 = fieldNorm(doc=1255)
0.5 = coord(1/2)
0.5 = coord(1/2)