Markey, K.; Atherton, P.; Newton, C.: ¬An analysis of controlled vocabulary and free text search statements in online searches (1980)
0.02
0.022746254 = product of:
0.045492508 = sum of:
0.045492508 = product of:
0.090985015 = sum of:
0.090985015 = weight(_text_:p in 1401) [ClassicSimilarity], result of:
0.090985015 = score(doc=1401,freq=2.0), product of:
0.16359726 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.045500398 = queryNorm
0.55615246 = fieldWeight in 1401, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.109375 = fieldNorm(doc=1401)
0.5 = coord(1/2)
0.5 = coord(1/2)