-
Rolland-Thomas, P.: Thesaural codes : an appraisal of their use in the Library of Congress Subject Headings (1993)
0.05
0.046187043 = product of:
0.0769784 = sum of:
0.010194 = weight(_text_:a in 549) [ClassicSimilarity], result of:
0.010194 = score(doc=549,freq=28.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.19066721 = fieldWeight in 549, product of:
5.2915025 = tf(freq=28.0), with freq of:
28.0 = termFreq=28.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.03125 = fieldNorm(doc=549)
0.06362687 = weight(_text_:91 in 549) [ClassicSimilarity], result of:
0.06362687 = score(doc=549,freq=2.0), product of:
0.25837386 = queryWeight, product of:
5.5722036 = idf(docFreq=456, maxDocs=44218)
0.046368346 = queryNorm
0.24625893 = fieldWeight in 549, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5722036 = idf(docFreq=456, maxDocs=44218)
0.03125 = fieldNorm(doc=549)
0.003157529 = product of:
0.006315058 = sum of:
0.006315058 = weight(_text_:information in 549) [ClassicSimilarity], result of:
0.006315058 = score(doc=549,freq=2.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.0775819 = fieldWeight in 549, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.03125 = fieldNorm(doc=549)
0.5 = coord(1/2)
0.6 = coord(3/5)
- Abstract
- LCSH is known as such since 1975. It always has created headings to serve the LC collections instead of a theoretical basis. It started to replace cross reference codes by thesaural codes in 1986, in a mechanical fashion. It was in no way transformed into a thesaurus. Its encyclopedic coverage, its pre-coordinate concepts make it substantially distinct, considering that thesauri usually map a restricted field of knowledge and use uniterms. The questions raised are whether the new symbols comply with thesaurus standards and if they are true to one or to several models. Explanations and definitions from other lists of subject headings and thesauri, literature in the field of classification and subject indexing will provide some answers. For instance, see refers from a subject heading not used to another or others used. Exceptionally it will lead from a specific term to a more general one. Some equate a see reference with the equivalence relationship. Such relationships are pointed by USE in LCSH. See also references are made from the broader subject to narrower parts of it and also between associated subjects. They suggest lateral or vertical connexions as well as reciprocal relationships. They serve a coordination purpose for some, lay down a methodical search itinerary for others. Since their inception in the 1950's thesauri have been devised for indexing and retrieving information in the fields of science and technology. Eventually they attended to a number of social sciences and humanities. Research derived from thesauri was voluminous. Numerous guidelines are designed. They did not discriminate between the "hard" sciences and the social sciences. RT relationships are widely but diversely used in numerous controlled vocabularies. LCSH's aim is to achieve a list almost free of RT and SA references. It thus restricts relationships to BT/NT, USE and UF. This raises the question as to whether all fields of knowledge can "fit" in the Procrustean bed of RT/NT, i.e., genus/species relationships. Standard codes were devised. It was soon realized that BT/NT, well suited to the genus/species couple could not signal a whole-part relationship. In LCSH, BT and NT function as reciprocals, the whole-part relationship is taken into account by ISO. It is amply elaborated upon by authors. The part-whole connexion is sometimes studied apart. The decision to replace cross reference codes was an improvement. Relations can now be distinguished through the distinct needs of numerous fields of knowledge are not attended to. Topic inclusion, and topic-subtopic, could provide the missing link where genus/species or whole/part are inadequate. Distinct codes, BT/NT and whole/part, should be provided. Sorting relationships with mechanical means can only lead to confusion.
- Source
- Cataloging and classification quarterly. 16(1993) no.2, S.71-91
- Type
- a
-
Byrne, C.C.; McCracken, S.A.: ¬An adaptive thesaurus employing semantic distance, relational inheritance and nominal compound interpretation for linguistic support of information retrieval (1999)
0.04
0.04414126 = product of:
0.11035315 = sum of:
0.008173384 = weight(_text_:a in 4483) [ClassicSimilarity], result of:
0.008173384 = score(doc=4483,freq=2.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.15287387 = fieldWeight in 4483, 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=4483)
0.102179766 = sum of:
0.026792523 = weight(_text_:information in 4483) [ClassicSimilarity], result of:
0.026792523 = score(doc=4483,freq=4.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.3291521 = fieldWeight in 4483, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=4483)
0.07538725 = weight(_text_:22 in 4483) [ClassicSimilarity], result of:
0.07538725 = score(doc=4483,freq=2.0), product of:
0.16237405 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046368346 = queryNorm
0.46428138 = fieldWeight in 4483, 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=4483)
0.4 = coord(2/5)
- Date
- 15. 3.2000 10:22:37
- Source
- Journal of information science. 25(1999) no.2, S.113-131
- Type
- a
-
Hudon, M.: Multilingual thesaurus construction : integrating the views of different cultures in one gateway to knowledge and concepts (1997)
0.04
0.042501073 = product of:
0.10625268 = sum of:
0.010812371 = weight(_text_:a in 475) [ClassicSimilarity], result of:
0.010812371 = score(doc=475,freq=14.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.20223314 = fieldWeight in 475, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=475)
0.095440306 = weight(_text_:91 in 475) [ClassicSimilarity], result of:
0.095440306 = score(doc=475,freq=2.0), product of:
0.25837386 = queryWeight, product of:
5.5722036 = idf(docFreq=456, maxDocs=44218)
0.046368346 = queryNorm
0.3693884 = fieldWeight in 475, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5722036 = idf(docFreq=456, maxDocs=44218)
0.046875 = fieldNorm(doc=475)
0.4 = coord(2/5)
- Abstract
- General linguistic and specific semantic problems arising in multilingual thesaurus construction are well defined in the various textbooks and in the guidelines covering this area. Many details are provided on the 'conceptual equivalence' issue, and various ways of dealing with conceptual divergence are described. But when discussing semantic solutions, display options, management issues, or use of technology, specialists and guidelines seldom, if ever, go as far as commenting on whether or not a particular option is truly respectful of a language and its speakers. This paper, based on the premise that in a multilingual thesaurus all languages are equal, reviews the options and solutions offered by the guidelines to the developer of specialized thesauri. It also introduces other problems of a sociocultural, and even of a truly political nature, a prominent feature in the daily life of the thesaurus designer with which the theory and the guidelines do not deal very well
- Source
- Knowledge organization. 24(1997) no.2, S.84-91
- Type
- a
-
Z39.19-1993: Guidelines for the construction, format, and management of monolingual thesauri (1993)
0.03
0.031033238 = product of:
0.0775831 = sum of:
0.005448922 = weight(_text_:a in 4092) [ClassicSimilarity], result of:
0.005448922 = score(doc=4092,freq=2.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.10191591 = fieldWeight in 4092, 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=4092)
0.072134174 = sum of:
0.021876005 = weight(_text_:information in 4092) [ClassicSimilarity], result of:
0.021876005 = score(doc=4092,freq=6.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.2687516 = fieldWeight in 4092, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0625 = fieldNorm(doc=4092)
0.050258167 = weight(_text_:22 in 4092) [ClassicSimilarity], result of:
0.050258167 = score(doc=4092,freq=2.0), product of:
0.16237405 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046368346 = queryNorm
0.30952093 = fieldWeight in 4092, 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=4092)
0.4 = coord(2/5)
- Abstract
- This 1993 edition is the authoritative guide constructing single-language thesauri, one of the most powerful tools for information retrieval. Written by experts, Z39.19 shows how to formulate descriptors, establish relationships among terms, and present the information in print and on a screen. Also included are thesaurus maintenance procedures and recommended features for thesaurus management systems
- Editor
- National Information Standards Organization
- Footnote
- Rez. in: Knowledge organization 22(1995) no.3/4, S.180-181 (M. Hudon)
-
Busch, J.A.: Building and accessing vocabulary resources for networked resource discovery and navigation (1998)
0.03
0.029128522 = product of:
0.072821304 = sum of:
0.0067426977 = weight(_text_:a in 2346) [ClassicSimilarity], result of:
0.0067426977 = score(doc=2346,freq=4.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.12611452 = fieldWeight in 2346, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=2346)
0.0660786 = sum of:
0.022102704 = weight(_text_:information in 2346) [ClassicSimilarity], result of:
0.022102704 = score(doc=2346,freq=8.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.27153665 = fieldWeight in 2346, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=2346)
0.043975897 = weight(_text_:22 in 2346) [ClassicSimilarity], result of:
0.043975897 = score(doc=2346,freq=2.0), product of:
0.16237405 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046368346 = queryNorm
0.2708308 = fieldWeight in 2346, 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=2346)
0.4 = coord(2/5)
- Abstract
- The Getty has a lenghty history in the research and development of thesauri and other structured vocabulary tools to make the use and exchange of electronic information easier
- Date
- 22. 9.1997 19:16:05
- Imprint
- Urbana-Champaign, IL : Illinois University at Urbana-Champaign, Graduate School of Library and Information Science
- Source
- Visualizing subject access for 21st century information resources: Papers presented at the 1997 Clinic on Library Applications of Data Processing, 2-4 Mar 1997, Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign. Ed.: P.A. Cochrane et al
- Type
- a
-
Crouch, C.J.: ¬An approach to the automatic construction of global thesauri (1990)
0.03
0.026539028 = product of:
0.06634757 = sum of:
0.0067426977 = weight(_text_:a in 4042) [ClassicSimilarity], result of:
0.0067426977 = score(doc=4042,freq=4.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.12611452 = fieldWeight in 4042, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=4042)
0.05960487 = sum of:
0.015628971 = weight(_text_:information in 4042) [ClassicSimilarity], result of:
0.015628971 = score(doc=4042,freq=4.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.1920054 = fieldWeight in 4042, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=4042)
0.043975897 = weight(_text_:22 in 4042) [ClassicSimilarity], result of:
0.043975897 = score(doc=4042,freq=2.0), product of:
0.16237405 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046368346 = queryNorm
0.2708308 = fieldWeight in 4042, 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=4042)
0.4 = coord(2/5)
- Abstract
- The benefits of a well constructed thesaurus to an information retrieval system have long been recognised by both researchers and practitioners in the field. Examines both early and current approaches to automatic thesaurus construction and describes an approach to the automatic generation of global thesauri based on the term discrimination value model of Salton Yang, and Yu and on an appropriate clustering algorithm. This method has been implemented and applied to 2 document collections. Preliminary results indicate that this method, which produces improvements in retrieval performance in excess of 10 and 15% in the test collections, is viable and worthy of continued investigation.
- Date
- 22. 4.1996 3:39:53
- Source
- Information processing and management. 26(1990), no.5, S.629-640
- Type
- a
-
Schmitz-Esser, W.: Thesaurus and beyond : an advanced formula for linguistic engineering and information retrieval (1999)
0.02
0.022135837 = product of:
0.055339593 = sum of:
0.008173384 = weight(_text_:a in 4116) [ClassicSimilarity], result of:
0.008173384 = score(doc=4116,freq=8.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.15287387 = fieldWeight in 4116, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=4116)
0.04716621 = sum of:
0.009472587 = weight(_text_:information in 4116) [ClassicSimilarity], result of:
0.009472587 = score(doc=4116,freq=2.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.116372846 = fieldWeight in 4116, 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=4116)
0.037693623 = weight(_text_:22 in 4116) [ClassicSimilarity], result of:
0.037693623 = score(doc=4116,freq=2.0), product of:
0.16237405 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046368346 = queryNorm
0.23214069 = fieldWeight in 4116, 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=4116)
0.4 = coord(2/5)
- Abstract
- This paper describes a proposal for a new approach to thesaurus design and construction that could have significant implicantions for change in the way multilingual thesauri are handled and integrated with each other. The formula presented here has its origin in the work of the German Thesaurus Committee and has had input from a number of scientists and practitioners int he field. The emphasis is on the various types of relationships found among concepts, notiions and universals in languages. These relationships are analysed and refined beyond the approach taken in existing thesauri. This proposal is very much at the discussion stage and the author invites the assistance of interested readers through criticisms, discussion and dialogue. Applications of the proposed thesaurus are included and the major goal of this proposal is to provide the basis for improved desing and integration of multilingual thesauri
- Source
- Knowledge organization. 26(1999) no.1, S.10-22
- Type
- a
-
Milstead, J.L.: Thesauri in a full-text world (1998)
0.02
0.021239052 = product of:
0.053097628 = sum of:
0.005898632 = weight(_text_:a in 2337) [ClassicSimilarity], result of:
0.005898632 = score(doc=2337,freq=6.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.11032722 = fieldWeight in 2337, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=2337)
0.047198996 = sum of:
0.015787644 = weight(_text_:information in 2337) [ClassicSimilarity], result of:
0.015787644 = score(doc=2337,freq=8.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.19395474 = fieldWeight in 2337, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=2337)
0.031411353 = weight(_text_:22 in 2337) [ClassicSimilarity], result of:
0.031411353 = score(doc=2337,freq=2.0), product of:
0.16237405 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046368346 = queryNorm
0.19345059 = fieldWeight in 2337, 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=2337)
0.4 = coord(2/5)
- Abstract
- Despite early claims to the contemporary, thesauri continue to find use as access tools for information in the full-text environment. Their mode of use is changing, but this change actually represents an expansion rather than a contrdiction of their utility. Thesauri and similar vocabulary tools can complement full-text access by aiding users in focusing their searches, by supplementing the linguistic analysis of the text search engine, and even by serving as one of the tools used by the linguistic engine for its analysis. While human indexing contunues to be used for many databases, the trend is to increase the use of machine aids for this purpose. All machine-aided indexing (MAI) systems rely on thesauri as the basis for term selection. In the 21st century, the balance of effort between human and machine will change at both input and output, but thesauri will continue to play an important role for the foreseeable future
- Date
- 22. 9.1997 19:16:05
- Imprint
- Urbana-Champaign, IL : Illinois University at Urbana-Champaign, Graduate School of Library and Information Science
- Source
- Visualizing subject access for 21st century information resources: Papers presented at the 1997 Clinic on Library Applications of Data Processing, 2-4 Mar 1997, Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign. Ed.: P.A. Cochrane et al
- Type
- a
-
Lambert, N.: Of thesauri and computers : reflections on the need for thesauri (1995)
0.01
0.013134009 = product of:
0.03283502 = sum of:
0.00770594 = weight(_text_:a in 3734) [ClassicSimilarity], result of:
0.00770594 = score(doc=3734,freq=4.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.14413087 = fieldWeight in 3734, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=3734)
0.025129084 = product of:
0.050258167 = sum of:
0.050258167 = weight(_text_:22 in 3734) [ClassicSimilarity], result of:
0.050258167 = score(doc=3734,freq=2.0), product of:
0.16237405 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046368346 = queryNorm
0.30952093 = fieldWeight in 3734, 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=3734)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Most indexed databases now include their thesauri and/or coding in their bibliographic files, searchable at the databases' online connect rates. Assesses the searchability of these on the different hosts. Thesauri and classifications are also available as diskette or CD-ROM products. Describes a number of these, highlighting the diskette thesaurus from IFI/Plenum Data for its flexible databases, the CLAIMS Uniterm and Comprehensive indexes to US chemical patents
- Source
- Searcher. 3(1995) no.8, S.18-22
- Type
- a
-
Roux, P.J.A.; Rykheer, J.H.: Developing a South African master thesaurus for community information (1990)
0.01
0.011645746 = product of:
0.029114366 = sum of:
0.013485395 = weight(_text_:a in 3596) [ClassicSimilarity], result of:
0.013485395 = score(doc=3596,freq=16.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.25222903 = fieldWeight in 3596, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=3596)
0.015628971 = product of:
0.031257942 = sum of:
0.031257942 = weight(_text_:information in 3596) [ClassicSimilarity], result of:
0.031257942 = score(doc=3596,freq=16.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.3840108 = fieldWeight in 3596, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=3596)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- In 1987 the Department of Library and Information Science at the University of South Africa committed itself to a research programme on community information. As part of that programme, the Department's Centre for Library and Information Service is compiling a prototype resource file of community information for a well-defined community in the Pretoria municipality. To retrieve information from the file, the Centre adopted an alphabetical approach, which necessitated a thesaurus. Instead of developing a thesaurus for the specific needs of the particular community, a "master" thesaurus, applicable to South African communities can be generated. The development of this South African "master" thesaurus for community information is described and the results reviewed.
- Source
- South African journal of library and information science. 58(1990) no.2, S.174-179
- Type
- a
-
Pollard, A.: ¬A hypertext-based thesaurus as subject browsing aid for bibliographic databases (1993)
0.01
0.011027008 = product of:
0.02756752 = sum of:
0.01651617 = weight(_text_:a in 4713) [ClassicSimilarity], result of:
0.01651617 = score(doc=4713,freq=6.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.3089162 = fieldWeight in 4713, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=4713)
0.011051352 = product of:
0.022102704 = sum of:
0.022102704 = weight(_text_:information in 4713) [ClassicSimilarity], result of:
0.022102704 = score(doc=4713,freq=2.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.27153665 = fieldWeight in 4713, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.109375 = fieldNorm(doc=4713)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Source
- Information processing and management. 29(1993) no.3, S.345-358
- Type
- a
-
Pollard, R.: ¬A hypertext-based thesaurus as a subject browsing aid for bibliographic databases (1993)
0.01
0.009466315 = product of:
0.023665786 = sum of:
0.012614433 = weight(_text_:a in 5096) [ClassicSimilarity], result of:
0.012614433 = score(doc=5096,freq=14.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.23593865 = fieldWeight in 5096, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=5096)
0.011051352 = product of:
0.022102704 = sum of:
0.022102704 = weight(_text_:information in 5096) [ClassicSimilarity], result of:
0.022102704 = score(doc=5096,freq=8.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.27153665 = fieldWeight in 5096, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=5096)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Part of a special issue on hypertext and information retrieval. Conventional information retrieval systems provide little support for browsing. Browsing is the major method of searching in hypertext system but users can become disoriented even when browsing small information space. If hypertext is to be used to support browsing in bibliographic databases navigational assistance will be required. Examines the role of thesauri as navigational aids for subject domains of Bibliographic databases. Presents the design of an experimental hypertext-based browsing inference for a thesaurus and its implementation using a commercially available hypertext program. Examines strategies for linking the thesaurus to a database
- Source
- Information processing and management. 29(1993) no.3, S.345-357
- Type
- a
-
Diaz, I.: Semi-automatic construction of thesaurus applying domain analysis techniques (1998)
0.01
0.009338933 = product of:
0.023347333 = sum of:
0.0144164935 = weight(_text_:a in 3744) [ClassicSimilarity], result of:
0.0144164935 = score(doc=3744,freq=14.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.26964417 = fieldWeight in 3744, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=3744)
0.0089308405 = product of:
0.017861681 = sum of:
0.017861681 = weight(_text_:information in 3744) [ClassicSimilarity], result of:
0.017861681 = score(doc=3744,freq=4.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.21943474 = fieldWeight in 3744, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0625 = fieldNorm(doc=3744)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Describes a specific application of domain analysis to the construction of thesauri to exploit domain analysis' ability to construct valid domain representations and determine fuzzy limits that normally define specific domains. The system employs a structure, called a Software Thesaurus (developed from a descriptor thesaurus), as a repository to store the information regarding specific domains. The domain representation is constructued semi automatically and can be used as a means of semiautomatic thesaurus generation
- Source
- International forum on information and documentation. 23(1998) no.2, S.11-19
- Type
- a
-
Osigwe, C.C.: ¬The effect of semantic and syntactic relationships in the choice of descriptor elements for precision in document indexing and information retrieval (1992)
0.01
0.008827171 = product of:
0.022067927 = sum of:
0.009437811 = weight(_text_:a in 4238) [ClassicSimilarity], result of:
0.009437811 = score(doc=4238,freq=6.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.17652355 = fieldWeight in 4238, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=4238)
0.012630116 = product of:
0.025260232 = sum of:
0.025260232 = weight(_text_:information in 4238) [ClassicSimilarity], result of:
0.025260232 = score(doc=4238,freq=8.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.3103276 = fieldWeight in 4238, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0625 = fieldNorm(doc=4238)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Examines some of the problems arising from the interaction between semantic and syntactic relationships in the working of information retrieval systems and proposes the introduction of a generalised thesaurus, universal programs for database storage and retrieval and for the construction of a common data input format for international information exchange
- Source
- Quarterly bulletin of the International Association of Agricultural Information Specialists. 37(1992) no.4, S.205-208
- Type
- a
-
Lopez-Huertas, M.J.: Thesaurus structure design : a conceptual approach for improved interaction (1997)
0.01
0.008693065 = product of:
0.021732662 = sum of:
0.012260076 = weight(_text_:a in 4708) [ClassicSimilarity], result of:
0.012260076 = score(doc=4708,freq=18.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.22931081 = fieldWeight in 4708, product of:
4.2426405 = tf(freq=18.0), with freq of:
18.0 = termFreq=18.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=4708)
0.009472587 = product of:
0.018945174 = sum of:
0.018945174 = weight(_text_:information in 4708) [ClassicSimilarity], result of:
0.018945174 = score(doc=4708,freq=8.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.23274569 = fieldWeight in 4708, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=4708)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- The need for thesauri to help users in their search for information in online information systems has been discussed for several decades. Many wide-ranging contributions have been made to solve this problem. Nevertheless, investigation is needed to design a thesaurus structure based on what is relevant for users and generators of information within a specific subject domain. Explores the possibility of creating a thesaurus from the cognitive viewpoint. This approach is based on a system that organizes its representation of knowledge or its classification as closely as possible to the authors' and users' images of the subject domain with the objective of increasing the interaction between users and texts, and thus the communication in a given information retrieval system. Discourse analysis is used as a main method to identify the categories and its relevance for building such a structure is discussed
- Type
- a
-
Smith, D.A.: Use of a thesaurus in two-stage information retrieval of electronic records (1996)
0.01
0.008412599 = product of:
0.021031497 = sum of:
0.01155891 = weight(_text_:a in 1965) [ClassicSimilarity], result of:
0.01155891 = score(doc=1965,freq=4.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.2161963 = fieldWeight in 1965, 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=1965)
0.009472587 = product of:
0.018945174 = sum of:
0.018945174 = weight(_text_:information in 1965) [ClassicSimilarity], result of:
0.018945174 = score(doc=1965,freq=2.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.23274569 = fieldWeight in 1965, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=1965)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Type
- a
-
Rahmstorf, G.: Information retrieval using conceptual representations of phrases (1994)
0.01
0.008281776 = product of:
0.020704439 = sum of:
0.008173384 = weight(_text_:a in 7862) [ClassicSimilarity], result of:
0.008173384 = score(doc=7862,freq=8.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.15287387 = fieldWeight in 7862, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=7862)
0.012531055 = product of:
0.02506211 = sum of:
0.02506211 = weight(_text_:information in 7862) [ClassicSimilarity], result of:
0.02506211 = score(doc=7862,freq=14.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.3078936 = fieldWeight in 7862, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=7862)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- The information retrieval problem is described starting from an analysis of the concepts 'user's information request' and 'information offerings of texts'. It is shown that natural language phrases are a more adequate medium for expressing information requests and information offerings than character string based query and indexing languages complemented by Boolean oprators. The phrases must be represented as concepts to reach a language invariant level for rule based relevance analysis. The special type of representation called advanced thesaurus is used for the semantic representation of natural language phrases and for relevance processing. The analysis of the retrieval problem leads to a symmetric system structure
- Source
- Information systems and data analysis: prospects - foundations - applications. Proc. of the 17th Annual Conference of the Gesellschaft für Klassifikation, Kaiserslautern, March 3-5, 1993. Ed.: H.-H. Bock et al
- Type
- a
-
Svenonius, E.: Design of controlled vocabularies (1990)
0.01
0.008234787 = product of:
0.020586967 = sum of:
0.009535614 = weight(_text_:a in 1271) [ClassicSimilarity], result of:
0.009535614 = score(doc=1271,freq=2.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.17835285 = fieldWeight in 1271, 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=1271)
0.011051352 = product of:
0.022102704 = sum of:
0.022102704 = weight(_text_:information in 1271) [ClassicSimilarity], result of:
0.022102704 = score(doc=1271,freq=2.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.27153665 = fieldWeight in 1271, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.109375 = fieldNorm(doc=1271)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Source
- Encyclopedia of library and information science. Vol.45, [=Suppl.10]
- Type
- a
-
Shapiro, C.D.; Yan, P.-F.: Generous tools : thesauri in digital libraries (1996)
0.01
0.008234787 = product of:
0.020586967 = sum of:
0.009535614 = weight(_text_:a in 3132) [ClassicSimilarity], result of:
0.009535614 = score(doc=3132,freq=8.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.17835285 = fieldWeight in 3132, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=3132)
0.011051352 = product of:
0.022102704 = sum of:
0.022102704 = weight(_text_:information in 3132) [ClassicSimilarity], result of:
0.022102704 = score(doc=3132,freq=8.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.27153665 = fieldWeight in 3132, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=3132)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- The Electronic Libraries and Information Highways MITRE Sponsored Research project aims to help searchers working in digital libraries increase their chance of matching the language of authors. Focuses on whether query formulation can be improved through the addition of semantic knowledge that is interactively gathered from a thesaurus that exists in a distributed, interoperating, cooperative environment. A prototype, ELVIS, was built that improves information retrieval through query expansion and is based on publicly available Z39.50 standard thesauri integrated with networked information discovery and retrieval tools
- Imprint
- Medford, NJ : Information Today
- Type
- a
-
Jones, S.: ¬A thesaurus data model for an intelligent retrieval system (1993)
0.01
0.008185431 = product of:
0.020463578 = sum of:
0.012260076 = weight(_text_:a in 5279) [ClassicSimilarity], result of:
0.012260076 = score(doc=5279,freq=18.0), product of:
0.053464882 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046368346 = queryNorm
0.22931081 = fieldWeight in 5279, product of:
4.2426405 = tf(freq=18.0), with freq of:
18.0 = termFreq=18.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=5279)
0.008203502 = product of:
0.016407004 = sum of:
0.016407004 = weight(_text_:information in 5279) [ClassicSimilarity], result of:
0.016407004 = score(doc=5279,freq=6.0), product of:
0.08139861 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046368346 = queryNorm
0.20156369 = fieldWeight in 5279, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=5279)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- This paper demonstrates the application of conventional database design techniques to thesaurus representation. The thesaurus is considered as a printed document, as a semantic net, and as a relational database to be used in conjunction with an intelligent information retrieval system. Some issues raised by analysis of two standard thesauri include: the prevalence of compound terms and the representation of term structure; thesaurus redundancy and the extent to which it can be eliminated in machine-readable versions; the difficulty of exploiting thesaurus knowledge originally designed for human rather than automatic interpretation; deriving 'strength of association' measures between terms in a thesaurus considered as a semantic net; facet representation and the need for variations in the data model to cater for structural differences between thesauri. A complete schema of database tables is presented, with an outline suggestion for using the stored information when matching one or more thesaurus terms with a user's query
- Source
- Journal of information science. 19(1993), S.167-178
- Type
- a
