Kang, I.-S.; Na, S.-H.; Kim, J.; Lee, J.-H.: Cluster-based patent retrieval (2007)
0.01
0.005436297 = product of:
0.010872594 = sum of:
0.010872594 = product of:
0.021745188 = sum of:
0.021745188 = weight(_text_:h in 930) [ClassicSimilarity], result of:
0.021745188 = score(doc=930,freq=4.0), product of:
0.09336021 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.03757783 = queryNorm
0.2329171 = fieldWeight in 930, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=930)
0.5 = coord(1/2)
0.5 = coord(1/2)