-
Cooper, W.S.: ¬On selecting a measure of retrieval effectiveness, revisited (1973)
0.06
0.05576241 = product of:
0.11152482 = sum of:
0.0090247495 = weight(_text_:e in 1930) [ClassicSimilarity], result of:
0.0090247495 = score(doc=1930,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.19057012 = fieldWeight in 1930, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.09375 = fieldNorm(doc=1930)
0.046835296 = weight(_text_:u in 1930) [ClassicSimilarity], result of:
0.046835296 = score(doc=1930,freq=2.0), product of:
0.107882105 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.03294669 = queryNorm
0.43413407 = fieldWeight in 1930, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.09375 = fieldNorm(doc=1930)
0.055664778 = weight(_text_:k in 1930) [ClassicSimilarity], result of:
0.055664778 = score(doc=1930,freq=2.0), product of:
0.11761237 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.03294669 = 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)
0.5 = coord(3/6)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.191-204.
- Language
- e
-
Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973)
0.02
0.017948903 = product of:
0.053846706 = sum of:
0.0060165 = weight(_text_:e in 5002) [ClassicSimilarity], result of:
0.0060165 = score(doc=5002,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.12704675 = fieldWeight in 5002, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.0625 = fieldNorm(doc=5002)
0.047830205 = product of:
0.071745306 = sum of:
0.03603473 = weight(_text_:29 in 5002) [ClassicSimilarity], result of:
0.03603473 = score(doc=5002,freq=2.0), product of:
0.11589616 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.03294669 = queryNorm
0.31092256 = fieldWeight in 5002, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0625 = fieldNorm(doc=5002)
0.035710577 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
0.035710577 = score(doc=5002,freq=2.0), product of:
0.1153737 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03294669 = 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)
0.33333334 = coord(2/6)
- Date
- 19. 3.1996 11:22:12
- Language
- e
- Source
- Journal of documentation. 29(1973) no.3, S.251-257
-
Sparck Jones, K.; Rijsbergen, C.J. van: Progress in documentation : Information retrieval test collection (1976)
0.01
0.01257852 = product of:
0.03773556 = sum of:
0.0052644373 = weight(_text_:e in 4161) [ClassicSimilarity], result of:
0.0052644373 = score(doc=4161,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.1111659 = fieldWeight in 4161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.0546875 = fieldNorm(doc=4161)
0.03247112 = weight(_text_:k in 4161) [ClassicSimilarity], result of:
0.03247112 = score(doc=4161,freq=2.0), product of:
0.11761237 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.03294669 = queryNorm
0.27608594 = fieldWeight in 4161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.0546875 = fieldNorm(doc=4161)
0.33333334 = coord(2/6)
- Language
- e
-
Bhattacharyya, K.: ¬The effectiveness of natural language in science indexing and retrieval (1974)
0.01
0.010781588 = product of:
0.032344762 = sum of:
0.0045123748 = weight(_text_:e in 2628) [ClassicSimilarity], result of:
0.0045123748 = score(doc=2628,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.09528506 = fieldWeight in 2628, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.046875 = fieldNorm(doc=2628)
0.027832389 = weight(_text_:k in 2628) [ClassicSimilarity], result of:
0.027832389 = score(doc=2628,freq=2.0), product of:
0.11761237 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.03294669 = queryNorm
0.23664509 = fieldWeight in 2628, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.046875 = fieldNorm(doc=2628)
0.33333334 = coord(2/6)
- Language
- e
-
Rijsbergen, C.J. van: Foundations of evaluation (1974)
0.00
0.002506875 = product of:
0.01504125 = sum of:
0.01504125 = weight(_text_:e in 1078) [ClassicSimilarity], result of:
0.01504125 = score(doc=1078,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.31761688 = fieldWeight in 1078, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.15625 = fieldNorm(doc=1078)
0.16666667 = coord(1/6)
- Language
- e
-
Harter, S.P.: ¬The Cranfield II relevance assessments : a critical evaluation (1971)
0.00
0.0020055 = product of:
0.012033 = sum of:
0.012033 = weight(_text_:e in 5364) [ClassicSimilarity], result of:
0.012033 = score(doc=5364,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.2540935 = fieldWeight in 5364, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.125 = fieldNorm(doc=5364)
0.16666667 = coord(1/6)
- Language
- e
-
Cooper, W.S.: ¬The paradoxal role of unexamined documents in the evaluation of retrieval effectiveness (1976)
0.00
0.0020055 = product of:
0.012033 = sum of:
0.012033 = weight(_text_:e in 2186) [ClassicSimilarity], result of:
0.012033 = score(doc=2186,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.2540935 = fieldWeight in 2186, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.125 = fieldNorm(doc=2186)
0.16666667 = coord(1/6)
- Language
- e
-
McGill, M.J.; Huitfeldt, J.: Experimental techniques of information retrieval (1979)
0.00
0.0017548124 = product of:
0.010528875 = sum of:
0.010528875 = weight(_text_:e in 279) [ClassicSimilarity], result of:
0.010528875 = score(doc=279,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.2223318 = fieldWeight in 279, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.109375 = fieldNorm(doc=279)
0.16666667 = coord(1/6)
- Language
- e
-
Schabas, A.H.: ¬A comparative evaluation of the retrieval effectiveness of titles, Library of Congress Subject Headings and PRECIS strings for computer searching of UK MARC data (1979)
0.00
0.001504125 = product of:
0.0090247495 = sum of:
0.0090247495 = weight(_text_:e in 5277) [ClassicSimilarity], result of:
0.0090247495 = score(doc=5277,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.19057012 = fieldWeight in 5277, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.09375 = fieldNorm(doc=5277)
0.16666667 = coord(1/6)
- Language
- e
-
King, D.W.; Bryant, E.C.: ¬The evaluation of information services and products (1971)
0.00
0.0012534375 = product of:
0.007520625 = sum of:
0.007520625 = weight(_text_:e in 4157) [ClassicSimilarity], result of:
0.007520625 = score(doc=4157,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.15880844 = fieldWeight in 4157, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.078125 = fieldNorm(doc=4157)
0.16666667 = coord(1/6)
- Language
- e
-
Byrne, J.R.: Relative effectiveness of titles, abstracts, and subject headings for machine retrieval from the COMPENDEX services (1975)
0.00
8.774062E-4 = product of:
0.0052644373 = sum of:
0.0052644373 = weight(_text_:e in 1604) [ClassicSimilarity], result of:
0.0052644373 = score(doc=1604,freq=2.0), product of:
0.047356583 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.03294669 = queryNorm
0.1111659 = fieldWeight in 1604, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.0546875 = fieldNorm(doc=1604)
0.16666667 = coord(1/6)
- Language
- e