Nelson, S.J.; Powell, T.; Srinivasan, S.; Humphreys, B.L.: Unified Medical Language System® (UMLS®) Project (2009)
0.02
0.023887785 = product of:
0.04777557 = sum of:
0.04777557 = product of:
0.09555114 = sum of:
0.09555114 = weight(_text_:encyclopedia in 4701) [ClassicSimilarity], result of:
0.09555114 = score(doc=4701,freq=2.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.35279295 = fieldWeight in 4701, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.046875 = fieldNorm(doc=4701)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates