Spink, A.; Wilson, T.; Ellis, D.; Ford, N.: Modeling users' successive searches in digital environments : a National Science Foundation/British Library funded study (1998)
0.00
0.0037485033 = product of:
0.02249102 = sum of:
0.02249102 = weight(_text_:t in 1255) [ClassicSimilarity], result of:
0.02249102 = score(doc=1255,freq=2.0), product of:
0.14764035 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.037477795 = queryNorm
0.15233654 = fieldWeight in 1255, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.02734375 = fieldNorm(doc=1255)
0.16666667 = coord(1/6)