Search (2 results, page 1 of 1)
- Did you mean:
- author's%3a%22Dahlberg%2c I.%22 2
- authors%3a%22Dahlberg%2c I.%22 2
-
Konze, I. u. L. Sickmann (Bearb.): Verzeichnis der beim Bibliothekar-Lehrinstitut des Landes Nordrhein-Westfalen 1949-1970 angefertigten Hausarbeiten für den höheren Dienst an wissenschaftlichen Bibliotheken (1971)
0.03
0.030300846 = product of: 0.060601693 = sum of: 0.060601693 = product of: 0.121203385 = sum of: 0.121203385 = weight(_text_:i in 3826) [ClassicSimilarity], result of: 0.121203385 = score(doc=3826,freq=4.0), product of: 0.17138503 = queryWeight, product of: 3.7717297 = idf(docFreq=2765, maxDocs=44218) 0.045439374 = queryNorm 0.70719934 = fieldWeight in 3826, product of: 2.0 = tf(freq=4.0), with freq of: 4.0 = termFreq=4.0 3.7717297 = idf(docFreq=2765, maxDocs=44218) 0.09375 = fieldNorm(doc=3826) 0.5 = coord(1/2) 0.5 = coord(1/2)
- Footnote
- Vgl. auch den Nachfolger: Konze, I. (Bearb.): Verzeichnis der Kölner Hausarbeiten ...
-
Robertson, S.E.: Theories and models in information retrieval (1977)
0.01
0.014283955 = product of: 0.02856791 = sum of: 0.02856791 = product of: 0.05713582 = sum of: 0.05713582 = weight(_text_:i in 1844) [ClassicSimilarity], result of: 0.05713582 = score(doc=1844,freq=2.0), product of: 0.17138503 = queryWeight, product of: 3.7717297 = idf(docFreq=2765, maxDocs=44218) 0.045439374 = queryNorm 0.33337694 = fieldWeight in 1844, product of: 1.4142135 = tf(freq=2.0), with freq of: 2.0 = termFreq=2.0 3.7717297 = idf(docFreq=2765, maxDocs=44218) 0.0625 = fieldNorm(doc=1844) 0.5 = coord(1/2) 0.5 = coord(1/2)
- Abstract
- This paper is concerned with recent work in the theory of information retrieval. More particularly, it is concerned with theories which tackle the problem of retrieval performance, in a sense which will be explained. The aim is not an exhaustive survey of such work; rather it is an analysis and synthesis of those contributions which I feel to be important or find interesting