-
Thesaurus rules and conventions (1967)
0.01
0.009677563 = product of:
0.06774294 = sum of:
0.06774294 = product of:
0.13548587 = sum of:
0.13548587 = weight(_text_:anwendung in 7141) [ClassicSimilarity], result of:
0.13548587 = score(doc=7141,freq=2.0), product of:
0.1809185 = queryWeight, product of:
4.8414783 = idf(docFreq=948, maxDocs=44218)
0.037368443 = queryNorm
0.74887794 = fieldWeight in 7141, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8414783 = idf(docFreq=948, maxDocs=44218)
0.109375 = fieldNorm(doc=7141)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Theme
- Konzeption und Anwendung des Prinzips Thesaurus
-
Maron, M.E.; Kuhns, I.L.: On relevance, probabilistic indexing and information retrieval (1960)
0.01
0.009676432 = product of:
0.067735024 = sum of:
0.067735024 = weight(_text_:interpretation in 1928) [ClassicSimilarity], result of:
0.067735024 = score(doc=1928,freq=2.0), product of:
0.21405315 = queryWeight, product of:
5.7281795 = idf(docFreq=390, maxDocs=44218)
0.037368443 = queryNorm
0.3164402 = fieldWeight in 1928, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.7281795 = idf(docFreq=390, maxDocs=44218)
0.0390625 = fieldNorm(doc=1928)
0.14285715 = coord(1/7)
- Abstract
- Reports on a novel technique for literature indexing and searching in a mechanized library system. The notion of relevance is taken as the key concept in the theory of information retrieval and a comparative concept of relevance is explicated in terms of the theory of probability. The resulting technique called 'Probabilistic indexing' allows a computing machine, given a request for information, to make a statistical inference and derive a number (called the 'relevance number') for each document, which is a measure of the probability that the document will satisfy the given request. The result of a search is an ordered list of those documents which satisfy the request ranked according to their probable relevance. The paper goes on to show that whereas in a conventional library system the cross-referencing ('see' and 'see also') is based soley on the 'semantic closeness' between index terms, statistical measures of closeness between index terms can be defined and computed. Thus, given an arbitrary request consisting of one (or many) index term(s), a machine can eleborate on it to increase the probability of selecting relevant documents that would not otherwise have been selected. Finally, the paper suggest an interpretation of the whole library problem as one where the request is considered as a clue on the basis of which the library system makes a concatenated statistical inference in order to provide as an output an ordered list of those documents which most probably satisfy the information needs of the user
-
Chomsky, N.: Aspects of the theory of syntax (1965)
0.01
0.005786181 = product of:
0.040503263 = sum of:
0.040503263 = product of:
0.08100653 = sum of:
0.08100653 = weight(_text_:22 in 3829) [ClassicSimilarity], result of:
0.08100653 = score(doc=3829,freq=2.0), product of:
0.13085791 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037368443 = queryNorm
0.61904186 = fieldWeight in 3829, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=3829)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 6. 1.1999 10:29:22
-
Hockett, C.F.: ¬The problem of universals in language (1963)
0.01
0.005786181 = product of:
0.040503263 = sum of:
0.040503263 = product of:
0.08100653 = sum of:
0.08100653 = weight(_text_:22 in 5591) [ClassicSimilarity], result of:
0.08100653 = score(doc=5591,freq=2.0), product of:
0.13085791 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037368443 = queryNorm
0.61904186 = fieldWeight in 5591, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=5591)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Pages
- S. 1-22
-
Coates, E.J.: CRG proposals for a new general classification (1969)
0.00
0.0043396354 = product of:
0.030377446 = sum of:
0.030377446 = product of:
0.06075489 = sum of:
0.06075489 = weight(_text_:22 in 1283) [ClassicSimilarity], result of:
0.06075489 = score(doc=1283,freq=2.0), product of:
0.13085791 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037368443 = queryNorm
0.46428138 = fieldWeight in 1283, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=1283)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Pages
- S.19-22
-
Barden, B.R.; Denison, B.: Guide to the SLA loan collection of classification schemes and subject heading lists on deposit at Western Reserve Univ. as of March 20, 1961 (1961)
0.00
0.0043396354 = product of:
0.030377446 = sum of:
0.030377446 = product of:
0.06075489 = sum of:
0.06075489 = weight(_text_:22 in 6157) [ClassicSimilarity], result of:
0.06075489 = score(doc=6157,freq=2.0), product of:
0.13085791 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037368443 = queryNorm
0.46428138 = fieldWeight in 6157, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=6157)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Footnote
- Rez. in: College and research libraries 22(1961) no.6, S.483-484 (A.R. Lindsay)
-
Cleverdon, C.W.: ASLIB Cranfield Research Project : Report on the first stage of an investigation into the comparative efficiency of indexing systems (1960)
0.00
0.0043396354 = product of:
0.030377446 = sum of:
0.030377446 = product of:
0.06075489 = sum of:
0.06075489 = weight(_text_:22 in 6158) [ClassicSimilarity], result of:
0.06075489 = score(doc=6158,freq=2.0), product of:
0.13085791 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037368443 = queryNorm
0.46428138 = fieldWeight in 6158, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=6158)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Footnote
- Rez. in: College and research libraries 22(1961) no.3, S.228 (G. Jahoda)
-
Gordon, T.J.; Helmer-Hirschberg, O.: Report on a long-range forecasting study (1964)
0.00
0.0040914477 = product of:
0.028640132 = sum of:
0.028640132 = product of:
0.057280265 = sum of:
0.057280265 = weight(_text_:22 in 4204) [ClassicSimilarity], result of:
0.057280265 = score(doc=4204,freq=4.0), product of:
0.13085791 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037368443 = queryNorm
0.4377287 = fieldWeight in 4204, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=4204)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 22. 6.2018 13:24:08
22. 6.2018 13:54:52
-
Mooers, C.: ¬The indexing language of an information retrieval system (1963)
0.00
0.003616363 = product of:
0.02531454 = sum of:
0.02531454 = product of:
0.05062908 = sum of:
0.05062908 = weight(_text_:22 in 1641) [ClassicSimilarity], result of:
0.05062908 = score(doc=1641,freq=2.0), product of:
0.13085791 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037368443 = queryNorm
0.38690117 = fieldWeight in 1641, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=1641)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Source
- Information retrieval today: papers presented at an Institute conducted by the Library School and the Cetre for Continuation Study, University of Minnesota, Sept. 19-22, 1962. Ed. by. Wesley Simonton
-
Blagden, J.F.: How much noise in a role-free and link-free co-ordinate indexing system? (1966)
0.00
0.002531454 = product of:
0.017720178 = sum of:
0.017720178 = product of:
0.035440356 = sum of:
0.035440356 = weight(_text_:22 in 2718) [ClassicSimilarity], result of:
0.035440356 = score(doc=2718,freq=2.0), product of:
0.13085791 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037368443 = queryNorm
0.2708308 = fieldWeight in 2718, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=2718)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Source
- Journal of documentation. 22(1966), S.203-209
