Li, R.; Chambers, T.; Ding, Y.; Zhang, G.; Meng, L.: Patent citation analysis : calculating science linkage based on citing motivation (2014)
0.02
0.017030146 = product of:
0.034060292 = sum of:
0.034060292 = product of:
0.068120584 = sum of:
0.068120584 = weight(_text_:y in 1257) [ClassicSimilarity], result of:
0.068120584 = score(doc=1257,freq=2.0), product of:
0.25623685 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.053245123 = queryNorm
0.26585007 = fieldWeight in 1257, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0390625 = fieldNorm(doc=1257)
0.5 = coord(1/2)
0.5 = coord(1/2)