-
Booth, A.: How consistent is MEDLINE indexing? (1990)
0.02
0.01948951 = product of:
0.103944056 = sum of:
0.05777369 = weight(_text_:author in 3510) [ClassicSimilarity], result of:
0.05777369 = score(doc=3510,freq=2.0), product of:
0.15482868 = queryWeight, product of:
4.824759 = idf(docFreq=964, maxDocs=44218)
0.032090448 = queryNorm
0.3731459 = fieldWeight in 3510, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.824759 = idf(docFreq=964, maxDocs=44218)
0.0546875 = fieldNorm(doc=3510)
0.030953024 = weight(_text_:26 in 3510) [ClassicSimilarity], result of:
0.030953024 = score(doc=3510,freq=2.0), product of:
0.113328174 = queryWeight, product of:
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.032090448 = queryNorm
0.27312735 = fieldWeight in 3510, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.0546875 = fieldNorm(doc=3510)
0.015217344 = product of:
0.030434689 = sum of:
0.030434689 = weight(_text_:22 in 3510) [ClassicSimilarity], result of:
0.030434689 = score(doc=3510,freq=2.0), product of:
0.11237528 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.032090448 = queryNorm
0.2708308 = fieldWeight in 3510, 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=3510)
0.5 = coord(1/2)
0.1875 = coord(3/16)
- Abstract
- A known-item search for abstracts to previously retrieved references revealed that 2 documents from the same annual volume had been indexed twice. Working from the premise that the whole volume may have been double-indexed, a search strategy was devised that limited the journal code to the year in question. 57 references were retrieved, comprising 28 pairs of duplicates plus a citation for the whole volume. Author, title, source and descriptors were requested off-line and the citations were paired with their duplicates. The 4 categories of descriptors-major descriptors, minor descriptors, subheadings and check-tags-were compared for depth and consistency of indexing and lessons that might be learnt from the study are discussed.
- Source
- Health libraries review. 7(1990) no.1, S.22-26
-
Mann, T.: 'Cataloging must change!' and indexer consistency studies : misreading the evidence at our peril (1997)
0.01
0.014868774 = product of:
0.118950196 = sum of:
0.059475098 = weight(_text_:cataloguing in 492) [ClassicSimilarity], result of:
0.059475098 = score(doc=492,freq=4.0), product of:
0.14268221 = queryWeight, product of:
4.446252 = idf(docFreq=1408, maxDocs=44218)
0.032090448 = queryNorm
0.4168361 = fieldWeight in 492, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.446252 = idf(docFreq=1408, maxDocs=44218)
0.046875 = fieldNorm(doc=492)
0.059475098 = weight(_text_:cataloguing in 492) [ClassicSimilarity], result of:
0.059475098 = score(doc=492,freq=4.0), product of:
0.14268221 = queryWeight, product of:
4.446252 = idf(docFreq=1408, maxDocs=44218)
0.032090448 = queryNorm
0.4168361 = fieldWeight in 492, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.446252 = idf(docFreq=1408, maxDocs=44218)
0.046875 = fieldNorm(doc=492)
0.125 = coord(2/16)
- Abstract
- An earlier article ('Cataloging must change' by D. Gregor and C. Mandel in: Library journal 116(1991) no.6, S.42-47) has popularized the belief that there is low consistency (only 10-20% agreement) among subject cataloguers in assigning LCSH. Because of this alleged lack og consistency, the article suggests, cataloguers 'can be more accepting in variations in subject choices' in copy cataloguing. Argues that this inference is based on a serious misreading of previous studies of indexer consistency. The 10-20% figure actually derives from studies of people trying to guess the same natural language key words, precisely in the absence of vocabulary control mechanisms such as thesauri or LCSH. Concludes that sources cited fail support their conclusion and some directly contradict it. Raises the concern that a naive acceptance by the library profession of the 10-20% claim can only have negative consequences for the quality of subject cataloguing created, and accepted throughout the country
-
Hersh, W.R.; Hickam, D.H.: ¬A comparison of two methods for indexing and retrieval from a full-text medical database (1992)
0.01
0.014154989 = product of:
0.075493276 = sum of:
0.030953024 = weight(_text_:26 in 4526) [ClassicSimilarity], result of:
0.030953024 = score(doc=4526,freq=2.0), product of:
0.113328174 = queryWeight, product of:
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.032090448 = queryNorm
0.27312735 = fieldWeight in 4526, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.0546875 = fieldNorm(doc=4526)
0.028848568 = weight(_text_:american in 4526) [ClassicSimilarity], result of:
0.028848568 = score(doc=4526,freq=2.0), product of:
0.10940785 = queryWeight, product of:
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.032090448 = queryNorm
0.26367915 = fieldWeight in 4526, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.0546875 = fieldNorm(doc=4526)
0.015691686 = product of:
0.031383373 = sum of:
0.031383373 = weight(_text_:ed in 4526) [ClassicSimilarity], result of:
0.031383373 = score(doc=4526,freq=2.0), product of:
0.11411327 = queryWeight, product of:
3.5559888 = idf(docFreq=3431, maxDocs=44218)
0.032090448 = queryNorm
0.27501947 = fieldWeight in 4526, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5559888 = idf(docFreq=3431, maxDocs=44218)
0.0546875 = fieldNorm(doc=4526)
0.5 = coord(1/2)
0.1875 = coord(3/16)
- Source
- Proceedings of the 55th Annual Meeting of the American Society for Information Science, Pittsburgh, 26.-29.10.92. Ed.: D. Shaw
-
Connell, T.H.: Use of the LCSH system : realities (1996)
0.01
0.012266113 = product of:
0.09812891 = sum of:
0.049064454 = weight(_text_:cataloguing in 6941) [ClassicSimilarity], result of:
0.049064454 = score(doc=6941,freq=2.0), product of:
0.14268221 = queryWeight, product of:
4.446252 = idf(docFreq=1408, maxDocs=44218)
0.032090448 = queryNorm
0.34387225 = fieldWeight in 6941, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.446252 = idf(docFreq=1408, maxDocs=44218)
0.0546875 = fieldNorm(doc=6941)
0.049064454 = weight(_text_:cataloguing in 6941) [ClassicSimilarity], result of:
0.049064454 = score(doc=6941,freq=2.0), product of:
0.14268221 = queryWeight, product of:
4.446252 = idf(docFreq=1408, maxDocs=44218)
0.032090448 = queryNorm
0.34387225 = fieldWeight in 6941, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.446252 = idf(docFreq=1408, maxDocs=44218)
0.0546875 = fieldNorm(doc=6941)
0.125 = coord(2/16)
- Abstract
- Explores the question of whether academic libraries keep up with the changes in the LCSH system. Analysis of the handling of 15 subject headings in 50 academic library catalogues available via the Internet found that libraries are not consistently maintaining subject authority control, or making syndetic references and scope notes in their catalogues. Discusses the results from the perspective of the libraries' performance, performance on the headings overall, performance on references, performance on the type of change made to the headings,a nd performance within 3 widely used onlien catalogue systems (DRA, INNOPAC and NOTIS). Discusses the implications of the findings in relationship to expressions of dissatisfaction with the effectiveness of subject cataloguing expressed by discussion groups on the Internet
-
Huffman, G.D.; Vital, D.A.; Bivins, R.G.: Generating indices with lexical association methods : term uniqueness (1990)
0.01
0.009715533 = product of:
0.07772426 = sum of:
0.022109302 = weight(_text_:26 in 4152) [ClassicSimilarity], result of:
0.022109302 = score(doc=4152,freq=2.0), product of:
0.113328174 = queryWeight, product of:
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.032090448 = queryNorm
0.19509095 = fieldWeight in 4152, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.0390625 = fieldNorm(doc=4152)
0.055614963 = weight(_text_:descriptive in 4152) [ClassicSimilarity], result of:
0.055614963 = score(doc=4152,freq=2.0), product of:
0.17974061 = queryWeight, product of:
5.601063 = idf(docFreq=443, maxDocs=44218)
0.032090448 = queryNorm
0.3094179 = fieldWeight in 4152, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.601063 = idf(docFreq=443, maxDocs=44218)
0.0390625 = fieldNorm(doc=4152)
0.125 = coord(2/16)
- Abstract
- A software system has been developed which orders citations retrieved from an online database in terms of relevancy. The system resulted from an effort generated by NASA's Technology Utilization Program to create new advanced software tools to largely automate the process of determining relevancy of database citations retrieved to support large technology transfer studies. The ranking is based on the generation of an enriched vocabulary using lexical association methods, a user assessment of the vocabulary and a combination of the user assessment and the lexical metric. One of the key elements in relevancy ranking is the enriched vocabulary -the terms mst be both unique and descriptive. This paper examines term uniqueness. Six lexical association methods were employed to generate characteristic word indices. A limited subset of the terms - the highest 20,40,60 and 7,5% of the uniquess words - we compared and uniquess factors developed. Computational times were also measured. It was found that methods based on occurrences and signal produced virtually the same terms. The limited subset of terms producedby the exact and centroid discrimination value were also nearly identical. Unique terms sets were produced by teh occurrence, variance and discrimination value (centroid), An end-user evaluation showed that the generated terms were largely distinct and had values of word precision which were consistent with values of the search precision.
- Source
- Information processing and management. 26(1990) no.4, S.549-558
-
Veenema, F.: To index or not to index (1996)
0.01
0.006595767 = product of:
0.052766137 = sum of:
0.035374884 = weight(_text_:26 in 7247) [ClassicSimilarity], result of:
0.035374884 = score(doc=7247,freq=2.0), product of:
0.113328174 = queryWeight, product of:
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.032090448 = queryNorm
0.31214553 = fieldWeight in 7247, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.0625 = fieldNorm(doc=7247)
0.017391251 = product of:
0.034782503 = sum of:
0.034782503 = weight(_text_:22 in 7247) [ClassicSimilarity], result of:
0.034782503 = score(doc=7247,freq=2.0), product of:
0.11237528 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.032090448 = queryNorm
0.30952093 = fieldWeight in 7247, 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=7247)
0.5 = coord(1/2)
0.125 = coord(2/16)
- Date
- 26. 2.1997 10:45:53
- Source
- Canadian journal of information and library science. 21(1996) no.2, S.1-22
-
David, C.; Giroux, L.; Bertrand-Gastaldy, S.; Lanteigne, D.: Indexing as problem solving : a cognitive approach to consistency (1995)
0.01
0.006362893 = product of:
0.050903145 = sum of:
0.03296979 = weight(_text_:american in 3833) [ClassicSimilarity], result of:
0.03296979 = score(doc=3833,freq=2.0), product of:
0.10940785 = queryWeight, product of:
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.032090448 = queryNorm
0.30134758 = fieldWeight in 3833, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.0625 = fieldNorm(doc=3833)
0.017933354 = product of:
0.035866708 = sum of:
0.035866708 = weight(_text_:ed in 3833) [ClassicSimilarity], result of:
0.035866708 = score(doc=3833,freq=2.0), product of:
0.11411327 = queryWeight, product of:
3.5559888 = idf(docFreq=3431, maxDocs=44218)
0.032090448 = queryNorm
0.31430796 = fieldWeight in 3833, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5559888 = idf(docFreq=3431, maxDocs=44218)
0.0625 = fieldNorm(doc=3833)
0.5 = coord(1/2)
0.125 = coord(2/16)
- Source
- Forging new partnerships in information: converging technologies. Proceedings of the 58th Annual Meeting of the American Society for Information Science, ASIS'95, Chicago, IL, 9-12 October 1995. Ed.: T. Kinney
-
Kautto, V.: Classing and indexing : a comparative time study (1992)
0.00
0.0030950191 = product of:
0.049520306 = sum of:
0.049520306 = weight(_text_:author in 2670) [ClassicSimilarity], result of:
0.049520306 = score(doc=2670,freq=2.0), product of:
0.15482868 = queryWeight, product of:
4.824759 = idf(docFreq=964, maxDocs=44218)
0.032090448 = queryNorm
0.31983936 = fieldWeight in 2670, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.824759 = idf(docFreq=964, maxDocs=44218)
0.046875 = fieldNorm(doc=2670)
0.0625 = coord(1/16)
- Abstract
- A total of 16 classifiers made a subject analysis of a set of books such that some of the books were first classified by the UDC anf then indexed with terms from the General Finnish Subject Headings while another set were processed in the opposite order. Finally books on the same subject were either classifies or indexed. The total number of books processed was 581. A comparison was made of the time required for processing in different situations and of the number of classes or subject headings used. The time figures were compared with corresponding data from the British Library (1972) and the Library of Congress (1990 and 1991). The author finds that the contents analysis requires one third, classification one third and indexing obe third of the time, if the document is both classified and indexed. There was a plausible correlation (o.51) between the length of experience in classification and the decrease in the time required for classing. The average number of UDC numbers was 4,3 and the average number of terms from the list of subject headings was 4,0
-
Braam, R.R.; Bruil, J.: Quality of indexing information : authors' views on indexing of their articles in chemical abstracts online CA-file (1992)
0.00
0.0030950191 = product of:
0.049520306 = sum of:
0.049520306 = weight(_text_:author in 2638) [ClassicSimilarity], result of:
0.049520306 = score(doc=2638,freq=2.0), product of:
0.15482868 = queryWeight, product of:
4.824759 = idf(docFreq=964, maxDocs=44218)
0.032090448 = queryNorm
0.31983936 = fieldWeight in 2638, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.824759 = idf(docFreq=964, maxDocs=44218)
0.046875 = fieldNorm(doc=2638)
0.0625 = coord(1/16)
- Abstract
- Studies the quality of subject indexing by Chemical Abstracts Indexing Service by confronting authors with the particular indexing terms attributed to their computer, for 270 articles published in 54 journals, 5 articles out of each journal. Responses (80%) indicate the superior quality of keywords, both as content descriptors and as retrieval tools. Author judgements on these 2 different aspects do not always converge, however. CAS's indexing policy to cover only 'new' aspects is reflected in author's judgements that index lists are somewhat incomplete, in particular in the case of thesaurus terms (index headings). The large effort expanded by CAS in maintaining and using a subject thesuaurs, in order to select valid index headings, as compared to quick and cheap keyword postings, does not lead to clear superior quality of thesaurus terms for document description nor in retrieval. Some 20% of papers were not placed in 'proper' CA main section, according to authors. As concerns the use of indexing data by third parties, in bibliometrics, users should be aware of the indexing policies behind the data, in order to prevent invalid interpretations
-
Soergel, D.: Indexing and retrieval performance : the logical evidence (1994)
0.00
0.0018030355 = product of:
0.028848568 = sum of:
0.028848568 = weight(_text_:american in 579) [ClassicSimilarity], result of:
0.028848568 = score(doc=579,freq=2.0), product of:
0.10940785 = queryWeight, product of:
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.032090448 = queryNorm
0.26367915 = fieldWeight in 579, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.0546875 = fieldNorm(doc=579)
0.0625 = coord(1/16)
- Source
- Journal of the American Society for Information Science. 45(1994) no.8, S.589-599
-
Burgin, R.: ¬The effect of indexing exhaustivity on retrieval performance (1991)
0.00
0.0016581976 = product of:
0.026531162 = sum of:
0.026531162 = weight(_text_:26 in 5262) [ClassicSimilarity], result of:
0.026531162 = score(doc=5262,freq=2.0), product of:
0.113328174 = queryWeight, product of:
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.032090448 = queryNorm
0.23410915 = fieldWeight in 5262, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5315237 = idf(docFreq=3516, maxDocs=44218)
0.046875 = fieldNorm(doc=5262)
0.0625 = coord(1/16)
- Abstract
- The study was based on the collection examnined by W.H. Shaw (Inf. proc. man. 26(1990) no.6, S.693-703, 705-718), a test collection of 1239 articles, indexed with the term cystic fibrosis; and 100 queries with 3 sets of relevance evaluations from subject experts. The effect of variations in indexing exhaustivity on retrieval performance in a vector space retrieval system was investigated by using a term weight threshold to construct different document representations for a test collection. Retrieval results showed that retrieval performance, as measured by the mean optimal measure for all queries at a term weight threshold, was highest at the most exhaustive representation, and decreased slightly as terms were eliminated and the indexing representation became less exhaustive. The findings suggest that the vector space model is more robust against variations in indexing exhaustivity that is the single-link clustering model
-
Larson, R.R.: Experiments in automatic Library of Congress Classification (1992)
0.00
0.0015454589 = product of:
0.024727343 = sum of:
0.024727343 = weight(_text_:american in 1054) [ClassicSimilarity], result of:
0.024727343 = score(doc=1054,freq=2.0), product of:
0.10940785 = queryWeight, product of:
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.032090448 = queryNorm
0.22601068 = fieldWeight in 1054, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.046875 = fieldNorm(doc=1054)
0.0625 = coord(1/16)
- Source
- Journal of the American Society for Information Science. 43(1992), S.130-148
-
Harter, S.P.; Cheng, Y.-R.: Colinked descriptors : improving vocabulary selection for end-user searching (1996)
0.00
0.0015454589 = product of:
0.024727343 = sum of:
0.024727343 = weight(_text_:american in 4216) [ClassicSimilarity], result of:
0.024727343 = score(doc=4216,freq=2.0), product of:
0.10940785 = queryWeight, product of:
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.032090448 = queryNorm
0.22601068 = fieldWeight in 4216, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.046875 = fieldNorm(doc=4216)
0.0625 = coord(1/16)
- Source
- Journal of the American Society for Information Science. 47(1996) no.4, S.311-325
-
Ellis, D.; Furner, J.; Willett, P.: On the creation of hypertext links in full-text documents : measurement of retrieval effectiveness (1996)
0.00
0.0012878824 = product of:
0.02060612 = sum of:
0.02060612 = weight(_text_:american in 4214) [ClassicSimilarity], result of:
0.02060612 = score(doc=4214,freq=2.0), product of:
0.10940785 = queryWeight, product of:
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.032090448 = queryNorm
0.18834224 = fieldWeight in 4214, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.4093587 = idf(docFreq=3973, maxDocs=44218)
0.0390625 = fieldNorm(doc=4214)
0.0625 = coord(1/16)
- Source
- Journal of the American Society for Information Science. 47(1996) no.4, S.287-300
-
Soergel, D.: Indexing and retrieval performance : the logical evidence (1997)
0.00
0.0011208346 = product of:
0.017933354 = sum of:
0.017933354 = product of:
0.035866708 = sum of:
0.035866708 = weight(_text_:ed in 578) [ClassicSimilarity], result of:
0.035866708 = score(doc=578,freq=2.0), product of:
0.11411327 = queryWeight, product of:
3.5559888 = idf(docFreq=3431, maxDocs=44218)
0.032090448 = queryNorm
0.31430796 = fieldWeight in 578, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5559888 = idf(docFreq=3431, maxDocs=44218)
0.0625 = fieldNorm(doc=578)
0.5 = coord(1/2)
0.0625 = coord(1/16)
- Source
- From classification to 'knowledge organization': Dorking revisited or 'past is prelude'. A collection of reprints to commemorate the firty year span between the Dorking Conference (First International Study Conference on Classification Research 1957) and the Sixth International Study Conference on Classification Research (London 1997). Ed.: A. Gilchrist
-
David, C.; Giroux, L.; Bertrand-Gastaldy, S.; Lanteigne, D.: Indexing as problem solving : a cognitive approach to consistency (1995)
0.00
8.40626E-4 = product of:
0.013450016 = sum of:
0.013450016 = product of:
0.026900033 = sum of:
0.026900033 = weight(_text_:ed in 3609) [ClassicSimilarity], result of:
0.026900033 = score(doc=3609,freq=2.0), product of:
0.11411327 = queryWeight, product of:
3.5559888 = idf(docFreq=3431, maxDocs=44218)
0.032090448 = queryNorm
0.23573098 = fieldWeight in 3609, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5559888 = idf(docFreq=3431, maxDocs=44218)
0.046875 = fieldNorm(doc=3609)
0.5 = coord(1/2)
0.0625 = coord(1/16)
- Source
- Connectedness: information, systems, people, organizations. Proceedings of CAIS/ACSI 95, the proceedings of the 23rd Annual Conference of the Canadian Association for Information Science. Ed. by Hope A. Olson and Denis B. Ward
