Rijsbergen, C.J. van: Information retrieval (1979)
0.02
0.024149865 = product of:
0.10867439 = sum of:
0.040756736 = weight(_text_:systems in 856) [ClassicSimilarity], result of:
0.040756736 = score(doc=856,freq=4.0), product of:
0.12125346 = queryWeight, product of:
3.0731742 = idf(docFreq=5561, maxDocs=44218)
0.039455447 = queryNorm
0.33612844 = fieldWeight in 856, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.0731742 = idf(docFreq=5561, maxDocs=44218)
0.0546875 = fieldNorm(doc=856)
0.06791765 = weight(_text_:software in 856) [ClassicSimilarity], result of:
0.06791765 = score(doc=856,freq=4.0), product of:
0.15652575 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.039455447 = queryNorm
0.43390724 = fieldWeight in 856, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0546875 = fieldNorm(doc=856)
0.22222222 = coord(2/9)
- Classification
- ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
- LCSH
- Information storage and retrieval systems
- RVK
- ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
- Subject
- Information storage and retrieval systems
