-
Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973)
0.02
0.018177543 = product of:
0.036355086 = sum of:
0.036355086 = product of:
0.05453263 = sum of:
0.0047945506 = weight(_text_:s in 5002) [ClassicSimilarity], result of:
0.0047945506 = score(doc=5002,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.09609913 = fieldWeight in 5002, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=5002)
0.04973808 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
0.04973808 = score(doc=5002,freq=2.0), product of:
0.16069375 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045888513 = queryNorm
0.30952093 = fieldWeight in 5002, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=5002)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 19. 3.1996 11:22:12
- Source
- Journal of documentation. 29(1973) no.3, S.251-257
-
Rijsbergen, C.J. van: Foundations of evaluation (1974)
0.00
0.0019977295 = product of:
0.003995459 = sum of:
0.003995459 = product of:
0.011986377 = sum of:
0.011986377 = weight(_text_:s in 1078) [ClassicSimilarity], result of:
0.011986377 = score(doc=1078,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.24024783 = fieldWeight in 1078, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.15625 = fieldNorm(doc=1078)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of documentation. 30(1974), S.365-373
-
Cooper, W.S.: ¬On selecting a measure of retrieval effectiveness, revisited (1973)
0.00
0.0016951298 = product of:
0.0033902596 = sum of:
0.0033902596 = product of:
0.010170778 = sum of:
0.010170778 = weight(_text_:s in 1930) [ClassicSimilarity], result of:
0.010170778 = score(doc=1930,freq=4.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = 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)
0.33333334 = coord(1/3)
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
-
Harter, S.P.: ¬The Cranfield II relevance assessments : a critical evaluation (1971)
0.00
0.0015981835 = product of:
0.003196367 = sum of:
0.003196367 = product of:
0.009589101 = sum of:
0.009589101 = weight(_text_:s in 5364) [ClassicSimilarity], result of:
0.009589101 = score(doc=5364,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.19219826 = fieldWeight in 5364, 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=5364)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Library quarterly. 41(1971), S.223-228
-
Cooper, W.S.: ¬The paradoxal role of unexamined documents in the evaluation of retrieval effectiveness (1976)
0.00
0.0015981835 = product of:
0.003196367 = sum of:
0.003196367 = product of:
0.009589101 = sum of:
0.009589101 = weight(_text_:s in 2186) [ClassicSimilarity], result of:
0.009589101 = score(doc=2186,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = 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
-
McGill, M.J.; Huitfeldt, J.: Experimental techniques of information retrieval (1979)
0.00
0.0013984106 = product of:
0.0027968213 = sum of:
0.0027968213 = product of:
0.008390464 = sum of:
0.008390464 = weight(_text_:s in 279) [ClassicSimilarity], result of:
0.008390464 = score(doc=279,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.16817348 = fieldWeight in 279, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.109375 = fieldNorm(doc=279)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Annual review of information science and technology. 14(1979), S.93-128
-
Byrne, J.R.: Relative effectiveness of titles, abstracts, and subject headings for machine retrieval from the COMPENDEX services (1975)
0.00
6.992053E-4 = product of:
0.0013984106 = sum of:
0.0013984106 = product of:
0.004195232 = sum of:
0.004195232 = weight(_text_:s in 1604) [ClassicSimilarity], result of:
0.004195232 = score(doc=1604,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.08408674 = fieldWeight in 1604, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0546875 = fieldNorm(doc=1604)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science. 26(1975), S.223-229
-
Sparck Jones, K.; Rijsbergen, C.J. van: Progress in documentation : Information retrieval test collection (1976)
0.00
6.992053E-4 = product of:
0.0013984106 = sum of:
0.0013984106 = product of:
0.004195232 = sum of:
0.004195232 = weight(_text_:s in 4161) [ClassicSimilarity], result of:
0.004195232 = score(doc=4161,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.08408674 = fieldWeight in 4161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0546875 = fieldNorm(doc=4161)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of documentation. 32(1976) no.1, S.59-75
-
Bhattacharyya, K.: ¬The effectiveness of natural language in science indexing and retrieval (1974)
0.00
5.993188E-4 = product of:
0.0011986376 = sum of:
0.0011986376 = product of:
0.0035959128 = sum of:
0.0035959128 = weight(_text_:s in 2628) [ClassicSimilarity], result of:
0.0035959128 = score(doc=2628,freq=2.0), product of:
0.049891718 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.045888513 = queryNorm
0.072074346 = fieldWeight in 2628, 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=2628)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of documentation. 30(1974), S.235-254
