Smiraglia, R.P.; Cai, X.: Tracking the evolution of clustering, machine learning, automatic indexing and automatic classification in knowledge organization (2017)
0.02
0.019762896 = product of:
0.09881448 = sum of:
0.09881448 = weight(_text_:r.p in 3627) [ClassicSimilarity], result of:
0.09881448 = score(doc=3627,freq=2.0), product of:
0.27431452 = queryWeight, product of:
6.5207376 = idf(docFreq=176, maxDocs=44218)
0.04206802 = queryNorm
0.3602233 = fieldWeight in 3627, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.5207376 = idf(docFreq=176, maxDocs=44218)
0.0390625 = fieldNorm(doc=3627)
0.2 = coord(1/5)