-
Brakel, P.A. van: CD-ROM encyclopedias (1991)
0.30
0.30478412 = product of:
0.45717618 = sum of:
0.33955008 = weight(_text_:p.a in 1292) [ClassicSimilarity], result of:
0.33955008 = score(doc=1292,freq=2.0), product of:
0.28669828 = queryWeight, product of:
6.699675 = idf(docFreq=147, maxDocs=44218)
0.042792864 = queryNorm
1.1843464 = fieldWeight in 1292, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.699675 = idf(docFreq=147, maxDocs=44218)
0.125 = fieldNorm(doc=1292)
0.11762611 = product of:
0.23525222 = sum of:
0.23525222 = weight(_text_:van in 1292) [ClassicSimilarity], result of:
0.23525222 = score(doc=1292,freq=2.0), product of:
0.23863824 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.042792864 = queryNorm
0.98581105 = fieldWeight in 1292, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.125 = fieldNorm(doc=1292)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Brakel, P.A. van: Twenty years of training in online searching : integrating the Internet with the teaching programme (1996)
0.23
0.2285881 = product of:
0.34288216 = sum of:
0.25466257 = weight(_text_:p.a in 7018) [ClassicSimilarity], result of:
0.25466257 = score(doc=7018,freq=2.0), product of:
0.28669828 = queryWeight, product of:
6.699675 = idf(docFreq=147, maxDocs=44218)
0.042792864 = queryNorm
0.8882598 = fieldWeight in 7018, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.699675 = idf(docFreq=147, maxDocs=44218)
0.09375 = fieldNorm(doc=7018)
0.08821958 = product of:
0.17643917 = sum of:
0.17643917 = weight(_text_:van in 7018) [ClassicSimilarity], result of:
0.17643917 = score(doc=7018,freq=2.0), product of:
0.23863824 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.042792864 = queryNorm
0.7393583 = fieldWeight in 7018, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.09375 = fieldNorm(doc=7018)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Van der Walt, H.E.A.; Brakel, P.A. van: Method for the evaluation of the retrieval effectiveness of a CD-ROM bibliographic database (1991)
0.15
0.14755374 = product of:
0.2213306 = sum of:
0.14855316 = weight(_text_:p.a in 3114) [ClassicSimilarity], result of:
0.14855316 = score(doc=3114,freq=2.0), product of:
0.28669828 = queryWeight, product of:
6.699675 = idf(docFreq=147, maxDocs=44218)
0.042792864 = queryNorm
0.5181516 = fieldWeight in 3114, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.699675 = idf(docFreq=147, maxDocs=44218)
0.0546875 = fieldNorm(doc=3114)
0.072777435 = product of:
0.14555487 = sum of:
0.14555487 = weight(_text_:van in 3114) [ClassicSimilarity], result of:
0.14555487 = score(doc=3114,freq=4.0), product of:
0.23863824 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.042792864 = queryNorm
0.60993946 = fieldWeight in 3114, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0546875 = fieldNorm(doc=3114)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Geyser, E.P.; Brakel, P.A. van: Man-machine interaction as a factor in the design of computerised information retrieval systems (1991)
0.10
0.09524503 = product of:
0.14286755 = sum of:
0.106109396 = weight(_text_:p.a in 3843) [ClassicSimilarity], result of:
0.106109396 = score(doc=3843,freq=2.0), product of:
0.28669828 = queryWeight, product of:
6.699675 = idf(docFreq=147, maxDocs=44218)
0.042792864 = queryNorm
0.37010825 = fieldWeight in 3843, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.699675 = idf(docFreq=147, maxDocs=44218)
0.0390625 = fieldNorm(doc=3843)
0.03675816 = product of:
0.07351632 = sum of:
0.07351632 = weight(_text_:van in 3843) [ClassicSimilarity], result of:
0.07351632 = score(doc=3843,freq=2.0), product of:
0.23863824 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.042792864 = queryNorm
0.30806595 = fieldWeight in 3843, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=3843)
0.5 = coord(1/2)
0.6666667 = coord(2/3)