Hafter, R.: ¬The performance of card catalogs : a review of research (1979)
0.11
0.107426174 = product of:
0.21485235 = sum of:
0.21485235 = sum of:
0.10138882 = weight(_text_:r in 3069) [ClassicSimilarity], result of:
0.10138882 = score(doc=3069,freq=2.0), product of:
0.17326194 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.05234091 = queryNorm
0.5851765 = fieldWeight in 3069, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.125 = fieldNorm(doc=3069)
0.11346353 = weight(_text_:22 in 3069) [ClassicSimilarity], result of:
0.11346353 = score(doc=3069,freq=2.0), product of:
0.18328895 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05234091 = queryNorm
0.61904186 = fieldWeight in 3069, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=3069)
0.5 = coord(1/2)
- Date
- 3.10.2000 20:48:22