Eager, C.; Oppenheim, C.: ¬An observational method for undertaking user needs studies (1996)
0.01
0.0069548762 = product of:
0.0139097525 = sum of:
0.0139097525 = product of:
0.041729257 = sum of:
0.041729257 = weight(_text_:c in 3671) [ClassicSimilarity], result of:
0.041729257 = score(doc=3671,freq=4.0), product of:
0.15484828 = queryWeight, product of:
3.4494052 = idf(docFreq=3817, maxDocs=44218)
0.044891298 = queryNorm
0.2694848 = fieldWeight in 3671, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.4494052 = idf(docFreq=3817, maxDocs=44218)
0.0390625 = fieldNorm(doc=3671)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
