-
Sparck Jones, K.: Search term relevance weighting given little relevance information (1979)
0.00
0.0029659807 = product of:
0.008897942 = sum of:
0.008897942 = weight(_text_:s in 1939) [ClassicSimilarity], result of:
0.008897942 = score(doc=1939,freq=4.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.20385705 = fieldWeight in 1939, 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=1939)
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.329-338.
- Source
- Journal of documentation. 35(1979), S.30-48
-
Sparck Jones, K.: ¬A statistical interpretation of term specifity and its application in retrieval (1972)
0.00
0.0027963533 = product of:
0.008389059 = sum of:
0.008389059 = weight(_text_:s in 5187) [ClassicSimilarity], result of:
0.008389059 = score(doc=5187,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.19219826 = fieldWeight in 5187, 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=5187)
0.33333334 = coord(1/3)
- Source
- Journal of documentation. 28(1972), S.11-21
-
Sparck Jones, K.: IDF term weighting and IR research lessons (2004)
0.00
0.0017477208 = product of:
0.005243162 = sum of:
0.005243162 = weight(_text_:s in 4422) [ClassicSimilarity], result of:
0.005243162 = score(doc=4422,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.120123915 = fieldWeight in 4422, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=4422)
0.33333334 = coord(1/3)
- Source
- Journal of documentation. 60(2004) no.5, S.521-523
-
Sparck Jones, K.: ¬A statistical interpretation of term specificity and its application in retrieval (2004)
0.00
0.0012234044 = product of:
0.0036702133 = sum of:
0.0036702133 = weight(_text_:s in 4420) [ClassicSimilarity], result of:
0.0036702133 = score(doc=4420,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.08408674 = fieldWeight in 4420, 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=4420)
0.33333334 = coord(1/3)
- Source
- Journal of documentation. 60(2004) no.5, S.493-502