-
Veenema, F.: To index or not to index (1996)
0.07
0.06540753 = product of:
0.13081506 = sum of:
0.13081506 = sum of:
0.07477882 = weight(_text_:searching in 7247) [ClassicSimilarity], result of:
0.07477882 = score(doc=7247,freq=2.0), product of:
0.2091384 = queryWeight, product of:
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.051699217 = queryNorm
0.3575566 = fieldWeight in 7247, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.0625 = fieldNorm(doc=7247)
0.05603624 = weight(_text_:22 in 7247) [ClassicSimilarity], result of:
0.05603624 = score(doc=7247,freq=2.0), product of:
0.18104185 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051699217 = 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)
- Abstract
- Describes an experiment comparing the performance of automatic full-text indexing software for personal computers with the human intellectual assignment of indexing terms in each document in a collection. Considers the times required to index the document, to retrieve documents satisfying 5 typical foreseen information needs, and the recall and precision ratios of searching. The software used is QuickFinder facility in WordPerfect 6.1 for Windows
- Source
- Canadian journal of information and library science. 21(1996) no.2, S.1-22
-
Boyce, B.R.; McLain, J.P.: Entry point depth and online search using a controlled vocabulary (1989)
0.02
0.023133516 = product of:
0.046267033 = sum of:
0.046267033 = product of:
0.092534065 = sum of:
0.092534065 = weight(_text_:searching in 2287) [ClassicSimilarity], result of:
0.092534065 = score(doc=2287,freq=4.0), product of:
0.2091384 = queryWeight, product of:
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.051699217 = queryNorm
0.44245374 = fieldWeight in 2287, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.0546875 = fieldNorm(doc=2287)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- The depth of indexing, the number of terms assigned on average to each document in a retrieval system as entry points, has a significantly effect on the standard retrieval performance measures in modern commercial retrieval systems, just as it did in previous experimental work. Tests on the effect of basic index search, as opposed to controlled vocabulary search, in these real systems are quite different than traditional comparisons of free text searching with controlled vocabulary searching. In modern commercial systems the controlled vocabulary serves as a precision device, since the strucure of the default for unqualified search terms in these systems requires that it do so.
-
Deaves, J.C.; Pache, J.E.: Chemical and numerical indexing for the INSPEC database (1989)
0.02
0.023133516 = product of:
0.046267033 = sum of:
0.046267033 = product of:
0.092534065 = sum of:
0.092534065 = weight(_text_:searching in 2289) [ClassicSimilarity], result of:
0.092534065 = score(doc=2289,freq=4.0), product of:
0.2091384 = queryWeight, product of:
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.051699217 = queryNorm
0.44245374 = fieldWeight in 2289, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.0546875 = fieldNorm(doc=2289)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- The wealth of chemical information on the INSPEC database is easily retrieved using the printed subject indexes to the associated abstract journals. However, this subject indexing is insufficient for machine retrieval, and free-text searching has special difficulties. An easy-to-use retrieval system has been developed which overcomes many problems, especially the retrieval of non-stoichiometric compositions, which are a feature solid-state chemistry. The scheme is limited to inorganic material, but allows flexibility and identification of dopants, interfaces and surfaces or substrates. At the same time, a system has been introduced for the online retrieval of numerical data included in the data base. This has successfully standardized the way in which such data is held for searching, enabling further refinement of searches where numerical information is significant
-
Cleverdon, C.W.: ASLIB Cranfield Research Project : Report on the first stage of an investigation into the comparative efficiency of indexing systems (1960)
0.02
0.02101359 = product of:
0.04202718 = sum of:
0.04202718 = product of:
0.08405436 = sum of:
0.08405436 = weight(_text_:22 in 6158) [ClassicSimilarity], result of:
0.08405436 = score(doc=6158,freq=2.0), product of:
0.18104185 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051699217 = 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)
0.5 = coord(1/2)
- Footnote
- Rez. in: College and research libraries 22(1961) no.3, S.228 (G. Jahoda)
-
Haanen, E.: Specificiteit en consistentie : een kwantitatief oderzoek naar trefwoordtoekenning door UBA en UBN (1991)
0.02
0.018694704 = product of:
0.03738941 = sum of:
0.03738941 = product of:
0.07477882 = sum of:
0.07477882 = weight(_text_:searching in 4778) [ClassicSimilarity], result of:
0.07477882 = score(doc=4778,freq=2.0), product of:
0.2091384 = queryWeight, product of:
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.051699217 = queryNorm
0.3575566 = fieldWeight in 4778, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.0625 = fieldNorm(doc=4778)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Online public access catalogues enable users to undertake subject searching by classification schedules, natural language, or controlled language terminology. In practice the 1st method is little used. Controlled language systems require indexers to index specifically and consistently. A comparative survey was made of indexing practices at Amsterdam and Mijmegen university libraries. On average Amsterdam assigned each document 3.5 index terms against 1.8 at Nijmegen. This discrepancy in indexing policy is the result of long-standing practices in each institution. Nijmegen has failed to utilise the advantages offered by online cataloges
-
Prasher, R.G.: Evaluation of indexing system (1989)
0.02
0.018694704 = product of:
0.03738941 = sum of:
0.03738941 = product of:
0.07477882 = sum of:
0.07477882 = weight(_text_:searching in 4998) [ClassicSimilarity], result of:
0.07477882 = score(doc=4998,freq=2.0), product of:
0.2091384 = queryWeight, product of:
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.051699217 = queryNorm
0.3575566 = fieldWeight in 4998, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.0625 = fieldNorm(doc=4998)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Describes information system and its various components-index file construstion, query formulation and searching. Discusses an indexing system, and brings out the need for its evaluation. Explains the concept of the efficiency of indexing systems and discusses factors which control this efficiency. Gives criteria for evaluation. Discusses recall and precision ratios, as also noise ratio, novelty ratio, and exhaustivity and specificity and the impact of each on the efficiency of indexing system. Mention also various steps for evaluation.
-
Rowley, J.: ¬The controlled versus natural indexing languages debate revisited : a perspective on information retrieval practice and research (1994)
0.02
0.01652394 = product of:
0.03304788 = sum of:
0.03304788 = product of:
0.06609576 = sum of:
0.06609576 = weight(_text_:searching in 7151) [ClassicSimilarity], result of:
0.06609576 = score(doc=7151,freq=4.0), product of:
0.2091384 = queryWeight, product of:
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.051699217 = queryNorm
0.3160384 = fieldWeight in 7151, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.0390625 = fieldNorm(doc=7151)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- This article revisits the debate concerning controlled and natural indexing languages, as used in searching the databases of the online hosts, in-house information retrieval systems, online public access catalogues and databases stored on CD-ROM. The debate was first formulated in the early days of information retrieval more than a century ago but, despite significant advance in technology, remains unresolved. The article divides the history of the debate into four eras. Era one was characterised by the introduction of controlled vocabulary. Era two focused on comparisons between different indexing languages in order to assess which was best. Era three saw a number of case studies of limited generalisability and a general recognition that the best search performance can be achieved by the parallel use of the two types of indexing languages. The emphasis in Era four has been on the development of end-user-based systems, including online public access catalogues and databases on CD-ROM. Recent developments in the use of expert systems techniques to support the representation of meaning may lead to systems which offer significant support to the user in end-user searching. In the meantime, however, information retrieval in practice involves a mixture of natural and controlled indexing languages used to search a wide variety of different kinds of databases
-
Boll, J.J.: DDC classification rules : an outline history and comparison of two sets of rules (1988)
0.02
0.016357865 = product of:
0.03271573 = sum of:
0.03271573 = product of:
0.06543146 = sum of:
0.06543146 = weight(_text_:searching in 404) [ClassicSimilarity], result of:
0.06543146 = score(doc=404,freq=2.0), product of:
0.2091384 = queryWeight, product of:
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.051699217 = queryNorm
0.31286204 = fieldWeight in 404, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.0546875 = fieldNorm(doc=404)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Melvil Dewey provided generally applicable classification guidelines or rules with his classification schedules, beginning with the second edition of his scheme. Many cataloging textbooks have adopted these guidelines. Recent editions of the DDC, however, provide considerably changed, quite intricate, and edition-specific rules. The resulting two different sets of classification rules are similar in theory but very different in application. Classifiers must be aware of both sets. They are summarized in two decision charts that are intended to illustrate the differences and similarities between the two sets of rules and to encourage consistent classification decisions. The need is expressed for a parallel, end-user-oriented searching code
-
Harter, S.P.; Cheng, Y.-R.: Colinked descriptors : improving vocabulary selection for end-user searching (1996)
0.01
0.014021028 = product of:
0.028042056 = sum of:
0.028042056 = product of:
0.05608411 = sum of:
0.05608411 = weight(_text_:searching in 4216) [ClassicSimilarity], result of:
0.05608411 = score(doc=4216,freq=2.0), product of:
0.2091384 = queryWeight, product of:
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.051699217 = queryNorm
0.26816747 = fieldWeight in 4216, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.046875 = fieldNorm(doc=4216)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Booth, A.: How consistent is MEDLINE indexing? (1990)
0.01
0.012257928 = product of:
0.024515856 = sum of:
0.024515856 = product of:
0.049031712 = sum of:
0.049031712 = weight(_text_:22 in 3510) [ClassicSimilarity], result of:
0.049031712 = score(doc=3510,freq=2.0), product of:
0.18104185 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051699217 = 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)
0.5 = coord(1/2)
- Source
- Health libraries review. 7(1990) no.1, S.22-26
-
Neshat, N.; Horri, A.: ¬A study of subject indexing consistency between the National Library of Iran and Humanities Libraries in the area of Iranian studies (2006)
0.01
0.012257928 = product of:
0.024515856 = sum of:
0.024515856 = product of:
0.049031712 = sum of:
0.049031712 = weight(_text_:22 in 230) [ClassicSimilarity], result of:
0.049031712 = score(doc=230,freq=2.0), product of:
0.18104185 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051699217 = queryNorm
0.2708308 = fieldWeight in 230, 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=230)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 4. 1.2007 10:22:26
-
Keen, E.M.: Designing and testing an interactive ranked retrieval system for professional searchers (1994)
0.01
0.01168419 = product of:
0.02336838 = sum of:
0.02336838 = product of:
0.04673676 = sum of:
0.04673676 = weight(_text_:searching in 1066) [ClassicSimilarity], result of:
0.04673676 = score(doc=1066,freq=2.0), product of:
0.2091384 = queryWeight, product of:
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.051699217 = queryNorm
0.22347288 = fieldWeight in 1066, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0452914 = idf(docFreq=2103, maxDocs=44218)
0.0390625 = fieldNorm(doc=1066)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Reports 3 explorations of ranked system design. 2 tests used a 'cystic fibrosis' test collection with 100 queries. Experiment 1 compared a Boolean with a ranked interactive system using a subject qualified trained searcher, and reporting recall and precision results. Experiment 2 compared 15 different ranked match algorithms in a batch mode using 2 test collections, and included some new proximate pairs and term weighting approaches. Experiment 3 is a design plan for an interactive ranked prototype offering mid search algorithm choices plus other manual search devices (such as obligatory and unwanted terms), as influenced by thinking aloud comments from experiment 1. Concludes that, in Boolean versus ranked using inverse collection frequency, the searcher inspected more records on ranked than Boolean and so achieved a higher recall but lower precision; however, the presentation order of the relevant records, was, on average, very similar in both systems. Concludes also that: query reformulation was quite strongly practised in ranked searching but does not appear to have been effective; the term pairs proximate weithing methods in experiment 2 enhanced precision on both test collections when used with inverse collection frequency weighting (ICF); and the design plan for an interactive prototype adds to a selection of match algorithms other devices, such as obligatory and unwanted term marking, evidence for this being found from think aloud comments
-
Taniguchi, S.: Recording evidence in bibliographic records and descriptive metadata (2005)
0.01
0.010506795 = product of:
0.02101359 = sum of:
0.02101359 = product of:
0.04202718 = sum of:
0.04202718 = weight(_text_:22 in 3565) [ClassicSimilarity], result of:
0.04202718 = score(doc=3565,freq=2.0), product of:
0.18104185 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051699217 = queryNorm
0.23214069 = fieldWeight in 3565, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=3565)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 18. 6.2005 13:16:22
-
Leininger, K.: Interindexer consistency in PsychINFO (2000)
0.01
0.010506795 = product of:
0.02101359 = sum of:
0.02101359 = product of:
0.04202718 = sum of:
0.04202718 = weight(_text_:22 in 2552) [ClassicSimilarity], result of:
0.04202718 = score(doc=2552,freq=2.0), product of:
0.18104185 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051699217 = queryNorm
0.23214069 = fieldWeight in 2552, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=2552)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 9. 2.1997 18:44:22
-
Subrahmanyam, B.: Library of Congress Classification numbers : issues of consistency and their implications for union catalogs (2006)
0.01
0.008755663 = product of:
0.017511327 = sum of:
0.017511327 = product of:
0.035022654 = sum of:
0.035022654 = weight(_text_:22 in 5784) [ClassicSimilarity], result of:
0.035022654 = score(doc=5784,freq=2.0), product of:
0.18104185 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051699217 = queryNorm
0.19345059 = fieldWeight in 5784, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=5784)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 10. 9.2000 17:38:22
-
White, H.; Willis, C.; Greenberg, J.: HIVEing : the effect of a semantic web technology on inter-indexer consistency (2014)
0.01
0.008755663 = product of:
0.017511327 = sum of:
0.017511327 = product of:
0.035022654 = sum of:
0.035022654 = weight(_text_:22 in 1781) [ClassicSimilarity], result of:
0.035022654 = score(doc=1781,freq=2.0), product of:
0.18104185 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051699217 = queryNorm
0.19345059 = fieldWeight in 1781, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=1781)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Purpose - The purpose of this paper is to examine the effect of the Helping Interdisciplinary Vocabulary Engineering (HIVE) system on the inter-indexer consistency of information professionals when assigning keywords to a scientific abstract. This study examined first, the inter-indexer consistency of potential HIVE users; second, the impact HIVE had on consistency; and third, challenges associated with using HIVE. Design/methodology/approach - A within-subjects quasi-experimental research design was used for this study. Data were collected using a task-scenario based questionnaire. Analysis was performed on consistency results using Hooper's and Rolling's inter-indexer consistency measures. A series of t-tests was used to judge the significance between consistency measure results. Findings - Results suggest that HIVE improves inter-indexing consistency. Working with HIVE increased consistency rates by 22 percent (Rolling's) and 25 percent (Hooper's) when selecting relevant terms from all vocabularies. A statistically significant difference exists between the assignment of free-text keywords and machine-aided keywords. Issues with homographs, disambiguation, vocabulary choice, and document structure were all identified as potential challenges. Research limitations/implications - Research limitations for this study can be found in the small number of vocabularies used for the study. Future research will include implementing HIVE into the Dryad Repository and studying its application in a repository system. Originality/value - This paper showcases several features used in HIVE system. By using traditional consistency measures to evaluate a semantic web technology, this paper emphasizes the link between traditional indexing and next generation machine-aided indexing (MAI) tools.
-
Bade, D.: ¬The creation and persistence of misinformation in shared library catalogs : language and subject knowledge in a technological era (2002)
0.00
0.003502265 = product of:
0.00700453 = sum of:
0.00700453 = product of:
0.01400906 = sum of:
0.01400906 = weight(_text_:22 in 1858) [ClassicSimilarity], result of:
0.01400906 = score(doc=1858,freq=2.0), product of:
0.18104185 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051699217 = queryNorm
0.07738023 = fieldWeight in 1858, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.015625 = fieldNorm(doc=1858)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 9.1997 19:16:05
