-
Janes, J.W.: Towards a search theory of information (1989)
0.00
0.0033826875 = product of:
0.006765375 = sum of:
0.006765375 = product of:
0.01353075 = sum of:
0.01353075 = weight(_text_:a in 4491) [ClassicSimilarity], result of:
0.01353075 = score(doc=4491,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.25478977 = fieldWeight in 4491, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.15625 = fieldNorm(doc=4491)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Tahani, V.: ¬A general conceptual framework for information retrieval systems (1972)
0.00
0.0029294936 = product of:
0.005858987 = sum of:
0.005858987 = product of:
0.011717974 = sum of:
0.011717974 = weight(_text_:a in 70) [ClassicSimilarity], result of:
0.011717974 = score(doc=70,freq=6.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.22065444 = fieldWeight in 70, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.078125 = fieldNorm(doc=70)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Develops a conceptual framework for information retrieval systems which admit of imprecision in the form of fuzziness in document characterization, retrieval rules, and file structures. A mathematical model for such systems, based on the theory of fuzzy sets, is introduced
-
Perez, E.R.: ¬A study of traditional information access models applied to a hypertext information system (1991)
0.00
0.0028703054 = product of:
0.005740611 = sum of:
0.005740611 = product of:
0.011481222 = sum of:
0.011481222 = weight(_text_:a in 8008) [ClassicSimilarity], result of:
0.011481222 = score(doc=8008,freq=4.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.2161963 = fieldWeight in 8008, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=8008)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Hjoerland, B.: Subject representation and information seeking : contributions to a theory based on the theory of knowledge (1993)
0.00
0.0023678814 = product of:
0.0047357627 = sum of:
0.0047357627 = product of:
0.009471525 = sum of:
0.009471525 = weight(_text_:a in 7555) [ClassicSimilarity], result of:
0.009471525 = score(doc=7555,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.17835285 = fieldWeight in 7555, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=7555)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Khosh-khui, A.: Statistical analysis of the association between Library of Congress Subject Headings and their corresponding class notations in the main classes of LCC and DDC (1985)
0.00
0.0020296127 = product of:
0.0040592253 = sum of:
0.0040592253 = product of:
0.008118451 = sum of:
0.008118451 = weight(_text_:a in 2810) [ClassicSimilarity], result of:
0.008118451 = score(doc=2810,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.15287387 = fieldWeight in 2810, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=2810)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Schabas, A.H.: ¬A comparative evaluation of the retrieval effectiveness of titles, Library of Congress Subject Headings and PRECIS strings for computer searching of UK MARC data (1979)
0.00
0.0020296127 = product of:
0.0040592253 = sum of:
0.0040592253 = product of:
0.008118451 = sum of:
0.008118451 = weight(_text_:a in 5277) [ClassicSimilarity], result of:
0.008118451 = score(doc=5277,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.15287387 = fieldWeight in 5277, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=5277)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Retterer, O.J.: Learning from a hypertext (1991)
0.00
0.0020296127 = product of:
0.0040592253 = sum of:
0.0040592253 = product of:
0.008118451 = sum of:
0.008118451 = weight(_text_:a in 8010) [ClassicSimilarity], result of:
0.008118451 = score(doc=8010,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.15287387 = fieldWeight in 8010, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=8010)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Dovbenko, M.A.; Umanski, A.N.: ¬A comparative analysis of information retrieval thesauri and normalised scientific and technical terminologies with the aim of their coordinated development (1980)
0.00
0.001353075 = product of:
0.00270615 = sum of:
0.00270615 = product of:
0.0054123 = sum of:
0.0054123 = weight(_text_:a in 1465) [ClassicSimilarity], result of:
0.0054123 = score(doc=1465,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.10191591 = fieldWeight in 1465, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=1465)
0.5 = coord(1/2)
0.5 = coord(1/2)