-
Lancaster, F.W.: Information retrieval systems : characteristics, testing and evaluation (1979)
0.01
0.009710376 = product of:
0.038841505 = sum of:
0.038841505 = weight(_text_:information in 7270) [ClassicSimilarity], result of:
0.038841505 = score(doc=7270,freq=4.0), product of:
0.08850355 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.050415643 = queryNorm
0.43886948 = fieldWeight in 7270, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.125 = fieldNorm(doc=7270)
0.25 = coord(1/4)
- Footnote
- 1st ed.: 1968; 3rd ed. u.d.T.: Information retrieval today (gemeinsam mit A.J. Warner)
-
Lancaster, F.W.; Fayen, E.G.: Information retrieval on-line (1973)
0.01
0.008582841 = product of:
0.034331363 = sum of:
0.034331363 = weight(_text_:information in 2260) [ClassicSimilarity], result of:
0.034331363 = score(doc=2260,freq=2.0), product of:
0.08850355 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.050415643 = queryNorm
0.38790947 = fieldWeight in 2260, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.15625 = fieldNorm(doc=2260)
0.25 = coord(1/4)
-
Lancaster, F.W.: Toward paperless information systems (1978)
0.01
0.008582841 = product of:
0.034331363 = sum of:
0.034331363 = weight(_text_:information in 3356) [ClassicSimilarity], result of:
0.034331363 = score(doc=3356,freq=2.0), product of:
0.08850355 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.050415643 = queryNorm
0.38790947 = fieldWeight in 3356, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.15625 = fieldNorm(doc=3356)
0.25 = coord(1/4)