-
Robertson, S.E.: Indexing theory and retrieval effectiveness (1979)
0.00
0.0034954415 = product of:
0.010486324 = sum of:
0.010486324 = weight(_text_:s in 5175) [ClassicSimilarity], result of:
0.010486324 = score(doc=5175,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.24024783 = fieldWeight in 5175, 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=5175)
0.33333334 = coord(1/3)
- Source
- Drexel library quarterly. 14(1979), S.40-56
-
Robertson, S.E.; Walker, S.: Some simple effective approximations to the 2-Poisson molde for probabilisitc weighted retrieval (1979)
0.00
0.0030271416 = product of:
0.009081424 = sum of:
0.009081424 = weight(_text_:s in 1940) [ClassicSimilarity], result of:
0.009081424 = score(doc=1940,freq=6.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.20806074 = fieldWeight in 1940, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=1940)
0.33333334 = coord(1/3)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.345-453.
- Source
- Journal of documentation. 35(1979), S.285-295 (???)
-
Robertson, S.E.: ¬The probability ranking principle in IR (1977)
0.00
0.0029659807 = product of:
0.008897942 = sum of:
0.008897942 = weight(_text_:s in 1935) [ClassicSimilarity], result of:
0.008897942 = score(doc=1935,freq=4.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.20385705 = fieldWeight in 1935, 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=1935)
0.33333334 = coord(1/3)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willet. San Francisco: Morgan Kaufmann 1997. S.281-286.
- Source
- Journal of documentation. 33(1977), S.294-304
-
Robertson, S.E.; Belkin, N.J.: Ranking in principle (1978)
0.00
0.0027963533 = product of:
0.008389059 = sum of:
0.008389059 = weight(_text_:s in 1143) [ClassicSimilarity], result of:
0.008389059 = score(doc=1143,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.19219826 = fieldWeight in 1143, 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=1143)
0.33333334 = coord(1/3)
- Source
- Journal of documentation. 34(1978), S.93-100
-
Robertson, S.E.: ¬The probabilistic character of relevance (1977)
0.00
0.0027963533 = product of:
0.008389059 = sum of:
0.008389059 = weight(_text_:s in 7399) [ClassicSimilarity], result of:
0.008389059 = score(doc=7399,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.19219826 = fieldWeight in 7399, 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=7399)
0.33333334 = coord(1/3)
- Source
- Information processing and management. 13(1977), S.247-251
-
Robertson, S.E.: Theories and models in information retrieval (1977)
0.00
0.0013981767 = product of:
0.0041945297 = sum of:
0.0041945297 = weight(_text_:s in 1844) [ClassicSimilarity], result of:
0.0041945297 = score(doc=1844,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.09609913 = fieldWeight in 1844, 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=1844)
0.33333334 = coord(1/3)
- Source
- Journal of documentation. 33(1977), S.126-148
-
Robertson, S.E.; Sparck Jones, K.: Relevance weighting of search terms (1976)
0.00
0.0013981767 = product of:
0.0041945297 = sum of:
0.0041945297 = weight(_text_:s in 71) [ClassicSimilarity], result of:
0.0041945297 = score(doc=71,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.09609913 = fieldWeight in 71, 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=71)
0.33333334 = coord(1/3)
- Source
- Journal of the American Society for Information Science. 27(1976), S.129-146