-
Sparck Jones, K.; Jackson, D.M.: ¬The use of automatically obtained keyword classification for information retrieval (1970)
0.03
0.029405536 = product of:
0.058811072 = sum of:
0.058811072 = product of:
0.117622145 = sum of:
0.117622145 = weight(_text_:k in 5177) [ClassicSimilarity], result of:
0.117622145 = score(doc=5177,freq=2.0), product of:
0.18639012 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.052213363 = queryNorm
0.63105357 = fieldWeight in 5177, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.125 = fieldNorm(doc=5177)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Sparck Jones, K.: Index term weighting (1973)
0.03
0.029405536 = product of:
0.058811072 = sum of:
0.058811072 = product of:
0.117622145 = sum of:
0.117622145 = weight(_text_:k in 5491) [ClassicSimilarity], result of:
0.117622145 = score(doc=5491,freq=2.0), product of:
0.18639012 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.052213363 = queryNorm
0.63105357 = fieldWeight in 5491, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.125 = fieldNorm(doc=5491)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Salton, G.; Wong, A.; Yang, C.S.: ¬A vector space model for automatic indexing (1975)
0.02
0.01837846 = product of:
0.03675692 = sum of:
0.03675692 = product of:
0.07351384 = sum of:
0.07351384 = weight(_text_:k in 1934) [ClassicSimilarity], result of:
0.07351384 = score(doc=1934,freq=2.0), product of:
0.18639012 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.052213363 = queryNorm
0.39440846 = fieldWeight in 1934, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.078125 = fieldNorm(doc=1934)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.273-280.