Search (2 results, page 1 of 1)
-
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)
0.03
0.025458943 = product of: 0.076376826 = sum of: 0.076376826 = product of: 0.22913048 = sum of: 0.22913048 = weight(_text_:lcsh in 5277) [ClassicSimilarity], result of: 0.22913048 = score(doc=5277,freq=2.0), product of: 0.31906453 = queryWeight, product of: 5.4164915 = idf(docFreq=533, maxDocs=44218) 0.058906123 = queryNorm 0.7181321 = fieldWeight in 5277, product of: 1.4142135 = tf(freq=2.0), with freq of: 2.0 = termFreq=2.0 5.4164915 = idf(docFreq=533, maxDocs=44218) 0.09375 = fieldNorm(doc=5277) 0.33333334 = coord(1/3) 0.33333334 = coord(1/3)
- Aid
- LCSH
-
Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973)
0.01
0.010641288 = product of: 0.031923864 = sum of: 0.031923864 = product of: 0.06384773 = sum of: 0.06384773 = weight(_text_:22 in 5002) [ClassicSimilarity], result of: 0.06384773 = score(doc=5002,freq=2.0), product of: 0.2062792 = queryWeight, product of: 3.5018296 = idf(docFreq=3622, maxDocs=44218) 0.058906123 = 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) 0.5 = coord(1/2) 0.33333334 = coord(1/3)
- Date
- 19. 3.1996 11:22:12