Fan, W.; Fox, E.A.; Pathak, P.; Wu, H.: ¬The effects of fitness functions an genetic programming-based ranking discovery for Web search (2004)
0.02
0.018421499 = product of:
0.036842998 = sum of:
0.036842998 = product of:
0.055264495 = sum of:
0.0185036 = weight(_text_:h in 2239) [ClassicSimilarity], result of:
0.0185036 = score(doc=2239,freq=2.0), product of:
0.11234917 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045220956 = queryNorm
0.16469726 = fieldWeight in 2239, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=2239)
0.036760893 = weight(_text_:22 in 2239) [ClassicSimilarity], result of:
0.036760893 = score(doc=2239,freq=2.0), product of:
0.15835609 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045220956 = queryNorm
0.23214069 = fieldWeight in 2239, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=2239)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 31. 5.2004 19:22:06