Lansdale, M.W.; Ormerod, T.C.: Understanding interfaces : a handbook of human-computer interaction (1994)
0.00
0.0020148484 = product of:
0.0060445447 = sum of:
0.0060445447 = product of:
0.0120890895 = sum of:
0.0120890895 = weight(_text_:of in 8813) [ClassicSimilarity], result of:
0.0120890895 = score(doc=8813,freq=2.0), product of:
0.06997118 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.04474555 = queryNorm
0.17277241 = fieldWeight in 8813, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.078125 = fieldNorm(doc=8813)
0.5 = coord(1/2)
0.33333334 = coord(1/3)