Qin, J.; Chen, J.: ¬A multi-layered, multi-dimensional representation of digital educational resources (2003)
0.00
0.00449546 = product of:
0.01798184 = sum of:
0.01798184 = product of:
0.03596368 = sum of:
0.03596368 = weight(_text_:j in 3818) [ClassicSimilarity], result of:
0.03596368 = score(doc=3818,freq=4.0), product of:
0.120727934 = queryWeight, product of:
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.03799467 = queryNorm
0.2978903 = fieldWeight in 3818, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.046875 = fieldNorm(doc=3818)
0.5 = coord(1/2)
0.25 = coord(1/4)