Lu, K.; Kipp, M.E.I.: Understanding the retrieval effectiveness of collaborative tags and author keywords in different retrieval environments : an experimental study on medical collections (2014)
0.01
0.006582996 = product of:
0.013165992 = sum of:
0.013165992 = product of:
0.026331984 = sum of:
0.026331984 = weight(_text_:k in 1215) [ClassicSimilarity], result of:
0.026331984 = score(doc=1215,freq=2.0), product of:
0.13352646 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.037404697 = queryNorm
0.19720423 = fieldWeight in 1215, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.0390625 = fieldNorm(doc=1215)
0.5 = coord(1/2)
0.5 = coord(1/2)
