Murdock, V.; Kelly, D.; Croft, W.B.; Belkin, N.J.; Yuan, X.: Identifying and improving retrieval for procedural questions (2007)
0.02
0.016263423 = product of:
0.032526847 = sum of:
0.032526847 = product of:
0.065053694 = sum of:
0.065053694 = weight(_text_:x in 902) [ClassicSimilarity], result of:
0.065053694 = score(doc=902,freq=2.0), product of:
0.23239528 = queryWeight, product of:
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.055034988 = queryNorm
0.27992693 = fieldWeight in 902, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.046875 = fieldNorm(doc=902)
0.5 = coord(1/2)
0.5 = coord(1/2)