-
Lancaster, F.W.: Vocabulary control for information retrieval (1986)
0.00
0.0030913372 = product of:
0.026276365 = sum of:
0.020027036 = weight(_text_:und in 217) [ClassicSimilarity], result of:
0.020027036 = score(doc=217,freq=8.0), product of:
0.05111519 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.023062602 = queryNorm
0.39180204 = fieldWeight in 217, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=217)
0.006249328 = product of:
0.024997313 = sum of:
0.024997313 = weight(_text_:22 in 217) [ClassicSimilarity], result of:
0.024997313 = score(doc=217,freq=2.0), product of:
0.0807613 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.023062602 = queryNorm
0.30952093 = fieldWeight in 217, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=217)
0.25 = coord(1/4)
0.11764706 = coord(2/17)
- Classification
- ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
- Date
- 22. 4.2007 10:07:51
- RVK
- ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
-
Lancaster, F.W.: Vocabulary control in information retrieval systems (1977)
0.00
0.0011780609 = product of:
0.020027036 = sum of:
0.020027036 = weight(_text_:und in 1774) [ClassicSimilarity], result of:
0.020027036 = score(doc=1774,freq=2.0), product of:
0.05111519 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.023062602 = queryNorm
0.39180204 = fieldWeight in 1774, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.125 = fieldNorm(doc=1774)
0.05882353 = coord(1/17)
- Theme
- Konzeption und Anwendung des Prinzips Thesaurus
-
Krooks, D.A.; Lancaster, F.W.: ¬The evolution of guidelines for thesaurus construction (1993)
0.00
5.8903045E-4 = product of:
0.010013518 = sum of:
0.010013518 = weight(_text_:und in 7128) [ClassicSimilarity], result of:
0.010013518 = score(doc=7128,freq=2.0), product of:
0.05111519 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.023062602 = queryNorm
0.19590102 = fieldWeight in 7128, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=7128)
0.05882353 = coord(1/17)
- Theme
- Konzeption und Anwendung des Prinzips Thesaurus
-
Lancaster, F.W.: Searching databases on CD-ROM : comparison of the results of end-user searching with results from two modes of searching by skilled intermediaries (1994)
0.00
4.4177283E-4 = product of:
0.007510138 = sum of:
0.007510138 = weight(_text_:und in 8372) [ClassicSimilarity], result of:
0.007510138 = score(doc=8372,freq=2.0), product of:
0.05111519 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.023062602 = queryNorm
0.14692576 = fieldWeight in 8372, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=8372)
0.05882353 = coord(1/17)
- Content
- Im einzelnen wurden für den Patron (P), den Education Librarian (E) und das Team (T) folgende Zahlen ermittelt: Recall (P:32,3%; E:45,9%; T:53,8%); Precision (P:75,5%; E:71,4%; T:66,8%); Novelty (P:51,8%; E:61,6%; T:59,4%)