-
Robertson, S.E.: ¬The probability ranking principle in IR (1977)
0.00
0.0017627863 = product of:
0.027323188 = sum of:
0.021456394 = weight(_text_:20 in 1935) [ClassicSimilarity], result of:
0.021456394 = score(doc=1935,freq=2.0), product of:
0.05887406 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.02141793 = queryNorm
0.36444563 = fieldWeight in 1935, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.09375 = fieldNorm(doc=1935)
0.0058667944 = weight(_text_:e in 1935) [ClassicSimilarity], result of:
0.0058667944 = score(doc=1935,freq=2.0), product of:
0.03078549 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.02141793 = queryNorm
0.19057012 = fieldWeight in 1935, 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=1935)
0.06451613 = coord(2/31)
- Date
- 15. 8.1998 20:39:56
- Language
- e
-
Robertson, S.E.; Walker, S.: Some simple effective approximations to the 2-Poisson molde for probabilisitc weighted retrieval (1979)
0.00
0.0014689886 = product of:
0.022769324 = sum of:
0.017880328 = weight(_text_:20 in 1940) [ClassicSimilarity], result of:
0.017880328 = score(doc=1940,freq=2.0), product of:
0.05887406 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.02141793 = queryNorm
0.30370468 = fieldWeight in 1940, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.078125 = fieldNorm(doc=1940)
0.0048889956 = weight(_text_:e in 1940) [ClassicSimilarity], result of:
0.0048889956 = score(doc=1940,freq=2.0), product of:
0.03078549 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.02141793 = queryNorm
0.15880844 = fieldWeight in 1940, 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=1940)
0.06451613 = coord(2/31)
- Date
- 15. 8.1998 20:00:41
- Language
- e
-
Robertson, S.E.: Indexing theory and retrieval effectiveness (1979)
0.00
3.1541905E-4 = product of:
0.009777991 = sum of:
0.009777991 = weight(_text_:e in 5175) [ClassicSimilarity], result of:
0.009777991 = score(doc=5175,freq=2.0), product of:
0.03078549 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.02141793 = queryNorm
0.31761688 = fieldWeight in 5175, 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=5175)
0.032258064 = coord(1/31)
- Language
- e
-
Robertson, S.E.; Belkin, N.J.: Ranking in principle (1978)
0.00
2.5233525E-4 = product of:
0.0078223925 = sum of:
0.0078223925 = weight(_text_:e in 1143) [ClassicSimilarity], result of:
0.0078223925 = score(doc=1143,freq=2.0), product of:
0.03078549 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.02141793 = queryNorm
0.2540935 = fieldWeight in 1143, 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=1143)
0.032258064 = coord(1/31)
- Language
- e
-
Robertson, S.E.: ¬The probabilistic character of relevance (1977)
0.00
2.5233525E-4 = product of:
0.0078223925 = sum of:
0.0078223925 = weight(_text_:e in 7399) [ClassicSimilarity], result of:
0.0078223925 = score(doc=7399,freq=2.0), product of:
0.03078549 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.02141793 = queryNorm
0.2540935 = fieldWeight in 7399, 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=7399)
0.032258064 = coord(1/31)
- Language
- e
-
Robertson, S.E.: Theories and models in information retrieval (1977)
0.00
1.2616762E-4 = product of:
0.0039111963 = sum of:
0.0039111963 = weight(_text_:e in 1844) [ClassicSimilarity], result of:
0.0039111963 = score(doc=1844,freq=2.0), product of:
0.03078549 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.02141793 = queryNorm
0.12704675 = fieldWeight in 1844, 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=1844)
0.032258064 = coord(1/31)
- Language
- e
-
Robertson, S.E.; Sparck Jones, K.: Relevance weighting of search terms (1976)
0.00
1.2616762E-4 = product of:
0.0039111963 = sum of:
0.0039111963 = weight(_text_:e in 71) [ClassicSimilarity], result of:
0.0039111963 = score(doc=71,freq=2.0), product of:
0.03078549 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.02141793 = queryNorm
0.12704675 = fieldWeight in 71, 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=71)
0.032258064 = coord(1/31)
- Language
- e