Perry, J.W.: Mechanized searching and subject headings (1953)
0.05
0.0485821 = product of:
0.14574629 = sum of:
0.0685742 = product of:
0.1371484 = sum of:
0.1371484 = weight(_text_:headings in 3891) [ClassicSimilarity], result of:
0.1371484 = score(doc=3891,freq=2.0), product of:
0.15996648 = queryWeight, product of:
4.849944 = idf(docFreq=940, maxDocs=44218)
0.03298316 = queryNorm
0.8573571 = fieldWeight in 3891, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.849944 = idf(docFreq=940, maxDocs=44218)
0.125 = fieldNorm(doc=3891)
0.5 = coord(1/2)
0.05700836 = weight(_text_:library in 3891) [ClassicSimilarity], result of:
0.05700836 = score(doc=3891,freq=4.0), product of:
0.08672522 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.03298316 = queryNorm
0.65734464 = fieldWeight in 3891, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.125 = fieldNorm(doc=3891)
0.020163735 = weight(_text_:of in 3891) [ClassicSimilarity], result of:
0.020163735 = score(doc=3891,freq=4.0), product of:
0.05157766 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.03298316 = queryNorm
0.39093933 = fieldWeight in 3891, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.125 = fieldNorm(doc=3891)
0.33333334 = coord(3/9)
- Imprint
- New York : Columbia University School of Library Science
- Source
- The subject analysis of library materials. Ed.: M.F. Tauber