Robertson, S.E.: On relevance weight estimation and query expansion (1986)
0.01
0.005731291 = product of:
0.017193872 = sum of:
0.017193872 = product of:
0.051581617 = sum of:
0.051581617 = weight(_text_:retrieval in 3875) [ClassicSimilarity], result of:
0.051581617 = score(doc=3875,freq=2.0), product of:
0.15433937 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.051022716 = queryNorm
0.33420905 = fieldWeight in 3875, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=3875)
0.33333334 = coord(1/3)
0.33333334 = coord(1/3)
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval