Lu, K.; Joo, S.; Lee, T.; Hu, R.: Factors that influence query reformulations and search performance in health information retrieval : a multilevel modeling approach (2017)
0.00
0.0031590632 = product of:
0.02211344 = sum of:
0.0071344664 = weight(_text_:information in 3754) [ClassicSimilarity], result of:
0.0071344664 = score(doc=3754,freq=4.0), product of:
0.052020688 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.029633347 = queryNorm
0.13714671 = fieldWeight in 3754, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=3754)
0.014978974 = weight(_text_:retrieval in 3754) [ClassicSimilarity], result of:
0.014978974 = score(doc=3754,freq=2.0), product of:
0.08963835 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.029633347 = queryNorm
0.16710453 = fieldWeight in 3754, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=3754)
0.14285715 = coord(2/14)
- Source
- Journal of the Association for Information Science and Technology. 68(2017) no.8, S.1886-1898