-
Cooper, W.S.: ¬On selecting a measure of retrieval effectiveness, revisited (1973)
0.03
0.032161415 = product of:
0.06432283 = sum of:
0.06432283 = product of:
0.096484244 = sum of:
0.0852949 = weight(_text_:k in 1930) [ClassicSimilarity], result of:
0.0852949 = score(doc=1930,freq=2.0), product of:
0.18021692 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.05048407 = queryNorm
0.47329018 = fieldWeight in 1930, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.09375 = fieldNorm(doc=1930)
0.011189342 = weight(_text_:s in 1930) [ClassicSimilarity], result of:
0.011189342 = score(doc=1930,freq=4.0), product of:
0.054888178 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.05048407 = 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)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- 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.: ¬A definition for relevance in information retrieval (1971)
0.00
0.0017582354 = product of:
0.0035164708 = sum of:
0.0035164708 = product of:
0.010549412 = sum of:
0.010549412 = weight(_text_:s in 842) [ClassicSimilarity], result of:
0.010549412 = score(doc=842,freq=2.0), product of:
0.054888178 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.05048407 = queryNorm
0.19219826 = fieldWeight in 842, 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=842)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Information storage and retrieval. 7(1971), S.19-37
-
Cooper, W.S.: ¬The paradoxal role of unexamined documents in the evaluation of retrieval effectiveness (1976)
0.00
0.0017582354 = product of:
0.0035164708 = sum of:
0.0035164708 = product of:
0.010549412 = sum of:
0.010549412 = weight(_text_:s in 2186) [ClassicSimilarity], result of:
0.010549412 = score(doc=2186,freq=2.0), product of:
0.054888178 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.05048407 = 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)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Information processing and management. 12(1976), S.367-375
-
Cooper, W.S.: Indexing documents by Gedanken experimentation (1978)
0.00
6.593383E-4 = product of:
0.0013186766 = sum of:
0.0013186766 = product of:
0.0039560297 = sum of:
0.0039560297 = weight(_text_:s in 412) [ClassicSimilarity], result of:
0.0039560297 = score(doc=412,freq=2.0), product of:
0.054888178 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.05048407 = queryNorm
0.072074346 = fieldWeight in 412, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=412)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science. 29(1978), S.107-119