Sparck Jones, K.; Jackson, D.M.: ¬The use of automatically obtained keyword classification for information retrieval (1970)
0.03
0.029949512 = product of:
0.08984853 = sum of:
0.07126326 = weight(_text_:use in 5177) [ClassicSimilarity], result of:
0.07126326 = score(doc=5177,freq=2.0), product of:
0.13165063 = queryWeight, product of:
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.04299373 = queryNorm
0.5413059 = fieldWeight in 5177, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.125 = fieldNorm(doc=5177)
0.018585268 = weight(_text_:of in 5177) [ClassicSimilarity], result of:
0.018585268 = score(doc=5177,freq=2.0), product of:
0.06723176 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.04299373 = queryNorm
0.27643585 = fieldWeight in 5177, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.125 = fieldNorm(doc=5177)
0.33333334 = coord(2/6)
