-
Van der Walt, H.E.A.; Brakel, P.A. van: Method for the evaluation of the retrieval effectiveness of a CD-ROM bibliographic database (1991)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 3114) [ClassicSimilarity], result of:
0.00690658 = score(doc=3114,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 3114, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=3114)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- African journal of library and information science. 59(1991) no.1, S.32-42
-
Janes, J.W.; McKinney, R.: Relevance judgements of actual users and secondary judges : a comparative study (1992)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 4276) [ClassicSimilarity], result of:
0.00690658 = score(doc=4276,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 4276, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=4276)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Abstract
- Examines judgements of relevance of document representations to query statements made by people other than the the originators of the queries. A small group of graduate students in the School of Information and Library Studies and undergraduates of Michigan Univ. judges sets of documents that had been retrieved for and judged by real users for a previous study. The assessment of relevance, by the secondary judges, were analysed by themselves and in comparison with the users' assessments. The judges performed reasonably well but some important differences were identified. Secondary judges use the various fields of document records in different ways than users and have a higher threshold of relevance
-
Harman, D.: Overview of the first Text Retrieval Conference (1993)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 548) [ClassicSimilarity], result of:
0.00690658 = score(doc=548,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 548, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=548)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Imprint
- Medford, NJ : Learned Information
-
Tillotson, J.: Is keyword searching the answer? (1995)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 1857) [ClassicSimilarity], result of:
0.00690658 = score(doc=1857,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 1857, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=1857)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Abstract
- Examines 3 aspects of keyword searching to see if defaulting to keyword searches might serve as a solution to the problems users find when performing subject searches in OPACs. Investigates if keyword searching produces useful results; if people who use keyword searches to find information on a subject report that they are satisfied with the results; and how keyword searching and controlled vocabulary searching are offered and explained in currently available OPAC interfaces. Concludes that both keyword and controlled vocabulary searching ought to be easily available in an OPAC, and that improvements need to be made in explanation and help offered to subject searchers
-
Hersh, W.R.; Hickam, D.H.: ¬An evaluation of interactive Boolean and natural language searching with an online medical textbook (1995)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 2651) [ClassicSimilarity], result of:
0.00690658 = score(doc=2651,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 2651, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=2651)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Journal of the American Society for Information Science. 46(1995) no.7, S.478-489
-
Singhal, A.: Document length normalization (1996)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 6630) [ClassicSimilarity], result of:
0.00690658 = score(doc=6630,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 6630, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=6630)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Information processing and management. 32(1996) no.5, S.619-633
-
Srinivasan, P.: Optimal document-indexing vocabulary for MEDLINE (1996)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 6634) [ClassicSimilarity], result of:
0.00690658 = score(doc=6634,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 6634, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=6634)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Information processing and management. 32(1996) no.5, S.503-514
-
Drabenstott, K.M.; Weller, M.S.: Improving personal-name searching in online catalogs (1996)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 6742) [ClassicSimilarity], result of:
0.00690658 = score(doc=6742,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 6742, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=6742)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Information technology and libraries. 15(1996) no.3, S.135-155
-
Robertson, S.E.; Walker, S.; Hancock-Beaulieu, M.M.: Large test collection experiments of an operational, interactive system : OKAPI at TREC (1995)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 6964) [ClassicSimilarity], result of:
0.00690658 = score(doc=6964,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 6964, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=6964)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Information processing and management. 31(1995) no.3, S.345-360
-
Jascó, P.: CD-ROM commentaries : the speed of the retrieval software (1996)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 6992) [ClassicSimilarity], result of:
0.00690658 = score(doc=6992,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 6992, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=6992)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Information today. 13(1996) no.10, S.24
-
Voorbij, H.: ¬Een goede titel behoeft geen trefwoord, of toch wel? : een vergelijkend oderzoek titelwoorden - trefwoorden (1997)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 1446) [ClassicSimilarity], result of:
0.00690658 = score(doc=1446,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 1446, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=1446)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Abstract
- A recent survey at the Royal Library in the Netherlands showed that subject headings are more efficient than title keywords for retrieval purposes. 475 Dutch publications were selected at random and assigned subject headings. The study showed that subject headings provided additional useful information in 56% of titles. Subsequent searching of the library's online catalogue showed that 88% of titles were retrieved via subject headings against 57% through title keywords. Further precision may be achieved with the help of indexing staff, but at considerable cost
-
Kilgour, F.G.; Moran, B.B.; Barden, J.R.: Retrieval effectiveness of surname-title-word searches for known items by academic library users (1999)
0.00
2.3021935E-4 = product of:
0.00345329 = sum of:
0.00345329 = product of:
0.00690658 = sum of:
0.00690658 = weight(_text_:information in 3061) [ClassicSimilarity], result of:
0.00690658 = score(doc=3061,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.13576832 = fieldWeight in 3061, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=3061)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Journal of the American Society for Information Science. 50(1999) no.3, S.265-270
-
McJunkin, M.C.: Precision and recall in title keyword searching (1995)
0.00
1.9733087E-4 = product of:
0.002959963 = sum of:
0.002959963 = product of:
0.005919926 = sum of:
0.005919926 = weight(_text_:information in 3351) [ClassicSimilarity], result of:
0.005919926 = score(doc=3351,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.116372846 = fieldWeight in 3351, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=3351)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Information technology and libraries. 14(1995) no.3, S.161-171
-
Shakir, H.S.; Nagao, M.: Context-sensitive processing of semantic queries in an image database system (1996)
0.00
1.9733087E-4 = product of:
0.002959963 = sum of:
0.002959963 = product of:
0.005919926 = sum of:
0.005919926 = weight(_text_:information in 6626) [ClassicSimilarity], result of:
0.005919926 = score(doc=6626,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.116372846 = fieldWeight in 6626, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=6626)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Information processing and management. 32(1996) no.5, S.573-600
-
Johnson, K.E.: OPAC missing record retrieval (1996)
0.00
1.9733087E-4 = product of:
0.002959963 = sum of:
0.002959963 = product of:
0.005919926 = sum of:
0.005919926 = weight(_text_:information in 6735) [ClassicSimilarity], result of:
0.005919926 = score(doc=6735,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.116372846 = fieldWeight in 6735, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=6735)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Information technology and libraries. 15(1996) no.3, S.169-171
-
Huffman, G.D.; Vital, D.A.; Bivins, R.G.: Generating indices with lexical association methods : term uniqueness (1990)
0.00
1.6444239E-4 = product of:
0.0024666358 = sum of:
0.0024666358 = product of:
0.0049332716 = sum of:
0.0049332716 = weight(_text_:information in 4152) [ClassicSimilarity], result of:
0.0049332716 = score(doc=4152,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.09697737 = fieldWeight in 4152, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=4152)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Source
- Information processing and management. 26(1990) no.4, S.549-558
-
Wildemuth, B.M.; Jacob, E.K.; Fullington, A.;; Bliek, R. de; Friedman, C.P.: ¬A detailed analysis of end-user search behaviours (1991)
0.00
1.6444239E-4 = product of:
0.0024666358 = sum of:
0.0024666358 = product of:
0.0049332716 = sum of:
0.0049332716 = weight(_text_:information in 2423) [ClassicSimilarity], result of:
0.0049332716 = score(doc=2423,freq=2.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.09697737 = fieldWeight in 2423, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=2423)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Imprint
- Medford : Learned Information Inc.
