Cooper, W.S.: ¬On selecting a measure of retrieval effectiveness, revisited (1973)
0.00
8.1759685E-4 = product of:
0.012263952 = sum of:
0.007483202 = weight(_text_:in in 1930) [ClassicSimilarity], result of:
0.007483202 = score(doc=1930,freq=4.0), product of:
0.029340398 = queryWeight, product of:
1.3602545 = idf(docFreq=30841, maxDocs=44218)
0.021569785 = queryNorm
0.25504774 = fieldWeight in 1930, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.3602545 = idf(docFreq=30841, maxDocs=44218)
0.09375 = fieldNorm(doc=1930)
0.00478075 = weight(_text_:s in 1930) [ClassicSimilarity], result of:
0.00478075 = score(doc=1930,freq=4.0), product of:
0.023451481 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.021569785 = queryNorm
0.20385705 = fieldWeight in 1930, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.09375 = fieldNorm(doc=1930)
0.06666667 = coord(2/30)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.191-204.
- Source
- Journal of the American Society for Information Science. 24(1973), S.87-100
Cooper, W.S.: ¬The paradoxal role of unexamined documents in the evaluation of retrieval effectiveness (1976)
0.00
7.708376E-4 = product of:
0.0115625635 = sum of:
0.00705523 = weight(_text_:in in 2186) [ClassicSimilarity], result of:
0.00705523 = score(doc=2186,freq=2.0), product of:
0.029340398 = queryWeight, product of:
1.3602545 = idf(docFreq=30841, maxDocs=44218)
0.021569785 = queryNorm
0.24046129 = fieldWeight in 2186, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.3602545 = idf(docFreq=30841, maxDocs=44218)
0.125 = fieldNorm(doc=2186)
0.004507334 = weight(_text_:s in 2186) [ClassicSimilarity], result of:
0.004507334 = score(doc=2186,freq=2.0), product of:
0.023451481 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.021569785 = queryNorm
0.19219826 = fieldWeight in 2186, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=2186)
0.06666667 = coord(2/30)
- Source
- Information processing and management. 12(1976), S.367-375
