Murphy, F.J.; Pollitt, A.S.; White, P.R.: Matching OPAC user interfaces to user needs (1991)
0.04
0.038237922 = product of:
0.076475844 = sum of:
0.076475844 = product of:
0.15295169 = sum of:
0.15295169 = weight(_text_:f.j in 2772) [ClassicSimilarity], result of:
0.15295169 = score(doc=2772,freq=2.0), product of:
0.33433348 = queryWeight, product of:
6.901097 = idf(docFreq=120, maxDocs=44218)
0.048446424 = queryNorm
0.4574824 = fieldWeight in 2772, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.901097 = idf(docFreq=120, maxDocs=44218)
0.046875 = fieldNorm(doc=2772)
0.5 = coord(1/2)
0.5 = coord(1/2)