Markey, K.; Atherton, P.; Newton, C.: ¬An analysis of controlled vocabulary and free text search statements in online searches (1980)
0.01
0.005882842 = product of:
0.023531368 = sum of:
0.023531368 = product of:
0.0705941 = sum of:
0.0705941 = weight(_text_:k in 1401) [ClassicSimilarity], result of:
0.0705941 = score(doc=1401,freq=2.0), product of:
0.12784806 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.03581401 = queryNorm
0.5521719 = fieldWeight in 1401, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.109375 = fieldNorm(doc=1401)
0.33333334 = coord(1/3)
0.25 = coord(1/4)