Cooper, W.S.: Expected search length : a single measure of retrieval effectiveness based on the weak ordering action of retrieval systems (1968)
0.00
0.0023674043 = product of:
0.01657183 = sum of:
0.01657183 = product of:
0.08285914 = sum of:
0.08285914 = weight(_text_:retrieval in 5904) [ClassicSimilarity], result of:
0.08285914 = score(doc=5904,freq=4.0), product of:
0.109568894 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.03622214 = queryNorm
0.75622874 = fieldWeight in 5904, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.125 = fieldNorm(doc=5904)
0.2 = coord(1/5)
0.14285715 = coord(1/7)
