Bennion, B.C.: Performance testing of a book and its index as an information retrieval system (1980)
0.01
0.0062698997 = product of:
0.043889295 = sum of:
0.043889295 = product of:
0.10972324 = sum of:
0.05264765 = weight(_text_:retrieval in 7763) [ClassicSimilarity], result of:
0.05264765 = score(doc=7763,freq=2.0), product of:
0.112520784 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037198 = queryNorm
0.46789268 = fieldWeight in 7763, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.109375 = fieldNorm(doc=7763)
0.057075594 = weight(_text_:system in 7763) [ClassicSimilarity], result of:
0.057075594 = score(doc=7763,freq=2.0), product of:
0.117157064 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.037198 = queryNorm
0.4871716 = fieldWeight in 7763, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.109375 = fieldNorm(doc=7763)
0.4 = coord(2/5)
0.14285715 = coord(1/7)