Marchionini, G.; Xia, L.; Dwiggins, S.: Efforts of search and subject expertise on information seeking in a hypertext environment (1990)
0.01
0.00914305 = product of:
0.0182861 = sum of:
0.0182861 = product of:
0.054858297 = sum of:
0.054858297 = weight(_text_:l in 4873) [ClassicSimilarity], result of:
0.054858297 = score(doc=4873,freq=2.0), product of:
0.20820296 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.05238268 = queryNorm
0.26348472 = fieldWeight in 4873, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=4873)
0.33333334 = coord(1/3)
0.5 = coord(1/2)