Numminen, P.; Vakkari, P.: Question types in public libraries' digital reference service in Finland : comparing 1999 and 2006 (2009)
0.00
0.001490028 = product of:
0.008940168 = sum of:
0.008940168 = weight(_text_:information in 2850) [ClassicSimilarity], result of:
0.008940168 = score(doc=2850,freq=2.0), product of:
0.07682349 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.04376215 = queryNorm
0.116372846 = fieldWeight in 2850, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=2850)
0.16666667 = coord(1/6)
- Source
- Journal of the American Society for Information Science and Technology. 60(2009) no.6, S.1249-1257