-
Karg, H.: Mapping Dewey and subject authorities : CrissCross (2007)
0.13
0.13242894 = product of:
0.2648579 = sum of:
0.06497275 = weight(_text_:library in 559) [ClassicSimilarity], result of:
0.06497275 = score(doc=559,freq=4.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.4930085 = fieldWeight in 559, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.09375 = fieldNorm(doc=559)
0.19988514 = sum of:
0.11839595 = weight(_text_:project in 559) [ClassicSimilarity], result of:
0.11839595 = score(doc=559,freq=2.0), product of:
0.21156175 = queryWeight, product of:
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.050121464 = queryNorm
0.5596283 = fieldWeight in 559, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.09375 = fieldNorm(doc=559)
0.0814892 = weight(_text_:22 in 559) [ClassicSimilarity], result of:
0.0814892 = score(doc=559,freq=2.0), product of:
0.17551683 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.050121464 = queryNorm
0.46428138 = fieldWeight in 559, 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=559)
0.5 = coord(2/4)
- Content
- Vortrag anläasslich des Workshops: "Extending the multilingual capacity of The European Library in the EDL project Stockholm, Swedish National Library, 22-23 November 2007".
-
Gabler, S.: Vergabe von DDC-Sachgruppen mittels eines Schlagwort-Thesaurus (2021)
0.05
0.04670523 = product of:
0.09341046 = sum of:
0.06633848 = product of:
0.19901544 = sum of:
0.19901544 = weight(_text_:3a in 1000) [ClassicSimilarity], result of:
0.19901544 = score(doc=1000,freq=2.0), product of:
0.42493033 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.050121464 = queryNorm
0.46834838 = fieldWeight in 1000, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0390625 = fieldNorm(doc=1000)
0.33333334 = coord(1/3)
0.027071979 = weight(_text_:library in 1000) [ClassicSimilarity], result of:
0.027071979 = score(doc=1000,freq=4.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.2054202 = fieldWeight in 1000, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.0390625 = fieldNorm(doc=1000)
0.5 = coord(2/4)
- Content
- Master thesis Master of Science (Library and Information Studies) (MSc), Universität Wien. Advisor: Christoph Steiner. Vgl.: https://www.researchgate.net/publication/371680244_Vergabe_von_DDC-Sachgruppen_mittels_eines_Schlagwort-Thesaurus. DOI: 10.25365/thesis.70030. Vgl. dazu die Präsentation unter: https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=web&cd=&ved=0CAIQw7AJahcKEwjwoZzzytz_AhUAAAAAHQAAAAAQAg&url=https%3A%2F%2Fwiki.dnb.de%2Fdownload%2Fattachments%2F252121510%2FDA3%2520Workshop-Gabler.pdf%3Fversion%3D1%26modificationDate%3D1671093170000%26api%3Dv2&psig=AOvVaw0szwENK1or3HevgvIDOfjx&ust=1687719410889597&opi=89978449.
- Imprint
- Wien / Library and Information Studies : Universität
-
Tudhope, D.; Binding, C.; Blocks, D.; Cunliffe, D.: Compound descriptors in context : a matching function for classifications and thesauri (2002)
0.04
0.042796366 = product of:
0.08559273 = sum of:
0.060926907 = weight(_text_:digital in 3179) [ClassicSimilarity], result of:
0.060926907 = score(doc=3179,freq=4.0), product of:
0.19770671 = queryWeight, product of:
3.944552 = idf(docFreq=2326, maxDocs=44218)
0.050121464 = queryNorm
0.3081681 = fieldWeight in 3179, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.944552 = idf(docFreq=2326, maxDocs=44218)
0.0390625 = fieldNorm(doc=3179)
0.024665821 = product of:
0.049331643 = sum of:
0.049331643 = weight(_text_:project in 3179) [ClassicSimilarity], result of:
0.049331643 = score(doc=3179,freq=2.0), product of:
0.21156175 = queryWeight, product of:
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.050121464 = queryNorm
0.23317845 = fieldWeight in 3179, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.0390625 = fieldNorm(doc=3179)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- There are many advantages for Digital Libraries in indexing with classifications or thesauri, but some current disincentive in the lack of flexible retrieval tools that deal with compound descriptors. This paper discusses a matching function for compound descriptors, or multi-concept subject headings, that does not rely an exact matching but incorporates term expansion via thesaurus semantic relationships to produce ranked results that take account of missing and partially matching terms. The matching function is based an a measure of semantic closeness between terms, which has the potential to help with recall problems. The work reported is part of the ongoing FACET project in collaboration with the National Museum of Science and Industry and its collections database. The architecture of the prototype system and its Interface are outlined. The matching problem for compound descriptors is reviewed and the FACET implementation described. Results are discussed from scenarios using the faceted Getty Art and Architecture Thesaurus. We argue that automatic traversal of thesaurus relationships can augment the user's browsing possibilities. The techniques can be applied both to unstructured multi-concept subject headings and potentially to more syntactically structured strings. The notion of a focus term is used by the matching function to model AAT modified descriptors (noun phrases). The relevance of the approach to precoordinated indexing and matching faceted strings is discussed.
- Source
- Proceedings of the Second ACM/IEEE-CS Joint Conference on Digital Libraries : JCDL 2002 ; July 14 - 18, 2002, Portland, Oregon, USA. Ed. by Gary Marchionini
-
Tudhope, D.; Binding, C.; Blocks, D.; Cunliffe, D.: FACET: thesaurus retrieval with semantic term expansion (2002)
0.04
0.03832386 = product of:
0.07664772 = sum of:
0.048741527 = weight(_text_:digital in 175) [ClassicSimilarity], result of:
0.048741527 = score(doc=175,freq=4.0), product of:
0.19770671 = queryWeight, product of:
3.944552 = idf(docFreq=2326, maxDocs=44218)
0.050121464 = queryNorm
0.2465345 = fieldWeight in 175, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.944552 = idf(docFreq=2326, maxDocs=44218)
0.03125 = fieldNorm(doc=175)
0.027906192 = product of:
0.055812385 = sum of:
0.055812385 = weight(_text_:project in 175) [ClassicSimilarity], result of:
0.055812385 = score(doc=175,freq=4.0), product of:
0.21156175 = queryWeight, product of:
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.050121464 = queryNorm
0.26381132 = fieldWeight in 175, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.03125 = fieldNorm(doc=175)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- There are many advantages for Digital Libraries in indexing with classifications or thesauri, but some current disincentive in the lack of flexible retrieval tools that deal with compound descriptors. This demonstration of a research prototype illustrates a matching function for compound descriptors, or multi-concept subject headings, that does not rely on exact matching but incorporates term expansion via thesaurus semantic relationships to produce ranked results that take account of missing and partially matching terms. The matching function is based on a measure of semantic closeness between terms.The work is part of the EPSRC funded FACET project in collaboration with the UK National Museum of Science and Industry (NMSI) which includes the National Railway Museum. An export of NMSI's Collections Database is used as the dataset for the research. The J. Paul Getty Trust's Art and Architecture Thesaurus (AAT) is the main thesaurus in the project. The AAT is a widely used thesaurus (over 120,000 terms). Descriptors are organised in 7 facets representing separate conceptual classes of terms.The FACET application is a multi tiered architecture accessing a SQL Server database, with an OLE DB connection. The thesauri are stored as relational tables in the Server's database. However, a key component of the system is a parallel representation of the underlying semantic network as an in-memory structure of thesaurus concepts (corresponding to preferred terms). The structure models the hierarchical and associative interrelationships of thesaurus concepts via weighted poly-hierarchical links. Its primary purpose is real-time semantic expansion of query terms, achieved by a spreading activation semantic closeness algorithm. Queries with associated results are stored persistently using XML format data. A Visual Basic interface combines a thesaurus browser and an initial term search facility that takes into account equivalence relationships. Terms are dragged to a direct manipulation Query Builder which maintains the facet structure.
- Source
- Proceedings of the Second ACM/IEEE-CS Joint Conference on Digital Libraries : JCDL 2002 ; July 14 - 18, 2002, Portland, Oregon, USA. Ed. by Gary Marchionini
-
Ranganathan, S.R.: Subject headings and facet analysis (1964)
0.04
0.035046883 = product of:
0.070093766 = sum of:
0.030628446 = weight(_text_:library in 1834) [ClassicSimilarity], result of:
0.030628446 = score(doc=1834,freq=2.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.23240642 = fieldWeight in 1834, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.0625 = fieldNorm(doc=1834)
0.039465316 = product of:
0.07893063 = sum of:
0.07893063 = weight(_text_:project in 1834) [ClassicSimilarity], result of:
0.07893063 = score(doc=1834,freq=2.0), product of:
0.21156175 = queryWeight, product of:
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.050121464 = queryNorm
0.37308553 = fieldWeight in 1834, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.0625 = fieldNorm(doc=1834)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- After establishing the terminology, shows how the choice of the name of the subject of a document and the rendering of the name in the heading of the specific subject entry can be got by facet analysis based on postulates and principles. After showing that subject headings constitute an artificial language, points out that using facet analysis for subject heading does not amount to using class number. Marks out the area for an objective statistical survey of sought heading for subject entry. Calls on Council for Library Resources Incorporated to provide for this project
-
Balikova, M.: Multilingual Subject Access to Catalogues of National Libraries (MSAC) : Czech Republic's collaboration with Slovakia, Slovenia, Croatia, Macedonia, Lithuania and Latvia (2005)
0.03
0.029267319 = product of:
0.058534637 = sum of:
0.030628446 = weight(_text_:library in 4349) [ClassicSimilarity], result of:
0.030628446 = score(doc=4349,freq=8.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.23240642 = fieldWeight in 4349, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.03125 = fieldNorm(doc=4349)
0.027906192 = product of:
0.055812385 = sum of:
0.055812385 = weight(_text_:project in 4349) [ClassicSimilarity], result of:
0.055812385 = score(doc=4349,freq=4.0), product of:
0.21156175 = queryWeight, product of:
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.050121464 = queryNorm
0.26381132 = fieldWeight in 4349, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.03125 = fieldNorm(doc=4349)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- Czech authority file of topical terms is intended to form a base for multilingual controlled vocabulary. The aim of the proposal is to provide users of online library catalogues and internet services of cooperating institutions with an indexing and retrieval tool which enables multilingual and cross-domain searching ("one-stop" seamless searching). The goal of the project is to establish a multilingual subject approach to catalogues of participating libraries (Czechia, Croatia, Latvia, Lithuania, Macedonia, Slovakia, and Slovenia). In practice this means that a user in any of these countries would enter a query in his local language and receive hits from all the catalogues. The initiative is complying with the main goals currently defined by IFLA for the activity of Indexing and Classification Section, it means: Changing Roles of Subject Access Tools (Berlin), Implementation and Adaptation of Global Tools for Subject Access to Local Needs (Buenos Aires), and Cataloguing and Subject Tools for Global Access: International Partnerships (Oslo).
- Content
- The aim of this initiative is to provide the users of online library catalogues and information gateways of cooperating libraries with a prototype for multilingual subject searching in online environment. Library collections of these libraries are large and without any doubt very valuable for researchers throughout Europe. What is needed is a standardized, authorized indexing and retrieval tool which would bring together all their catalogues and databases and enable multilingual subject searching. At the beginning of the project, a number of factors affecting subject indexing in current environment and cross-searching for subjects have been identified. These factors include - standardization of subject retrieval process and indexing and classification tools - subject retrieval methods - possibility of interoperability among different indexing and classification schemes - multilingualism issue - possibility to increase precision and recall trough Z39.50 protocol and its profiles and to apply authority control in subject retrieval process - need for cooperation
- Footnote
- Vortrag, World Library and Information Congress: 71th IFLA General Conference and Council "Libraries - A voyage of discovery", August 14th - 18th 2005, Oslo, Norway.
-
Foskett, D.J.: Classification for a general index language: a review of recent research by the Classification Research Group (1970)
0.02
0.016243188 = product of:
0.06497275 = sum of:
0.06497275 = weight(_text_:library in 3403) [ClassicSimilarity], result of:
0.06497275 = score(doc=3403,freq=4.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.4930085 = fieldWeight in 3403, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.09375 = fieldNorm(doc=3403)
0.25 = coord(1/4)
- Imprint
- London : Library Association
- Series
- Library Association research publication; no.2
-
Aitchison, J.: Bliss and the thesaurus : the bibliographic classification of H.E. Bliss as a source of thesaurus terms and structure (1986)
0.01
0.013535989 = product of:
0.054143958 = sum of:
0.054143958 = weight(_text_:library in 1570) [ClassicSimilarity], result of:
0.054143958 = score(doc=1570,freq=4.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.4108404 = fieldWeight in 1570, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.078125 = fieldNorm(doc=1570)
0.25 = coord(1/4)
- Source
- Ranganathan's philosophy: assessment, impact and relevance. Proc. of the Int. Conf. organised by the Indian Library Association an co-sponsored by Sarada Ranganathan' Endowment for Library Science. Ed.: T.S. Rajagopalan
-
Hatapuc, A.: De la vocabular controlat la tezaur : schita de proiect pentru domeniul siintelor politice (2003)
0.01
0.012332911 = product of:
0.049331643 = sum of:
0.049331643 = product of:
0.098663285 = sum of:
0.098663285 = weight(_text_:project in 2083) [ClassicSimilarity], result of:
0.098663285 = score(doc=2083,freq=2.0), product of:
0.21156175 = queryWeight, product of:
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.050121464 = queryNorm
0.4663569 = fieldWeight in 2083, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.078125 = fieldNorm(doc=2083)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Footnote
- Übers. des Titels: On controlled vocabulaires: a project in the field of political science -
-
Austin, D.: Citation order and linguistic structure (1976)
0.01
0.011485667 = product of:
0.045942668 = sum of:
0.045942668 = weight(_text_:library in 2804) [ClassicSimilarity], result of:
0.045942668 = score(doc=2804,freq=2.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.34860963 = fieldWeight in 2804, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.09375 = fieldNorm(doc=2804)
0.25 = coord(1/4)
- Imprint
- Sydney : Library Association of Australia
-
Woldering, B.: Connecting with users : Europe and multilinguality (2006)
0.01
0.010828791 = product of:
0.043315165 = sum of:
0.043315165 = weight(_text_:library in 5032) [ClassicSimilarity], result of:
0.043315165 = score(doc=5032,freq=4.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.32867232 = fieldWeight in 5032, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.0625 = fieldNorm(doc=5032)
0.25 = coord(1/4)
- Abstract
- This paper introduces to the new Internet service The European Library, provided by the Conference of European National Librarians (CENL), and gives an overview of activities in Europe for multilingual library services, developed and tested in various projects: TEL-ME-MOR, MACS (Multilingual Access to Subjects), MSAC (Multilingual Subject Access to Catalogues of National Libraries), Crisscross, and VIAF (Virtual International Authority File).
-
Root thesaurus. Pt.1.2 (1985)
0.01
0.01018615 = product of:
0.0407446 = sum of:
0.0407446 = product of:
0.0814892 = sum of:
0.0814892 = weight(_text_:22 in 467) [ClassicSimilarity], result of:
0.0814892 = score(doc=467,freq=2.0), product of:
0.17551683 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.050121464 = queryNorm
0.46428138 = fieldWeight in 467, 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=467)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 18. 5.2007 14:22:43
-
Cochrane, P.A.: Subject access - free text and controlled : the case of Papua New Guinea (1985)
0.01
0.0076571116 = product of:
0.030628446 = sum of:
0.030628446 = weight(_text_:library in 1459) [ClassicSimilarity], result of:
0.030628446 = score(doc=1459,freq=2.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.23240642 = fieldWeight in 1459, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.0625 = fieldNorm(doc=1459)
0.25 = coord(1/4)
- Source
- Online public access to library files. Conf. Proc. held at the Univ. of Bath, 3.-5.9.1984. Ed.: J. Kinsella
-
Raghavan, K.S.: ¬The general theory of classification as the basis for structuring of subject headings (1985(?))
0.01
0.0076571116 = product of:
0.030628446 = sum of:
0.030628446 = weight(_text_:library in 1830) [ClassicSimilarity], result of:
0.030628446 = score(doc=1830,freq=2.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.23240642 = fieldWeight in 1830, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.0625 = fieldNorm(doc=1830)
0.25 = coord(1/4)
- Imprint
- New Dehli : Dehli Library Association
-
Negrini, G.: CLASTHES: a thesaurofacet generator (1994)
0.01
0.0076571116 = product of:
0.030628446 = sum of:
0.030628446 = weight(_text_:library in 8347) [ClassicSimilarity], result of:
0.030628446 = score(doc=8347,freq=2.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.23240642 = fieldWeight in 8347, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.0625 = fieldNorm(doc=8347)
0.25 = coord(1/4)
- Source
- Library science with a slant to documentation. 31(1994) no.1, S.1-12
-
Frâncu, V.: Harmonizing a universal classification system with an interdisciplinary multilingual thesaurus : advantages and limitations (2000)
0.01
0.0061664553 = product of:
0.024665821 = sum of:
0.024665821 = product of:
0.049331643 = sum of:
0.049331643 = weight(_text_:project in 108) [ClassicSimilarity], result of:
0.049331643 = score(doc=108,freq=2.0), product of:
0.21156175 = queryWeight, product of:
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.050121464 = queryNorm
0.23317845 = fieldWeight in 108, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.0390625 = fieldNorm(doc=108)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- The case under consideration is a project of building an interdisciplinary multilingual thesaurus (Romanian-English-French) starting from a list of indexing terms based on an abridged version of the Universal Decimal Classification (UDC). The resulting thesaurus is intended for public libraries for both indexing and searching purposes in bibliographic databases covering a wide range of topics but with a fairly low level of specificity. The problems encountered in such an approach fall into two groups: 1) concordance or compatibility problems in terms of the indexing languages considered (between a classification system and a thesaurus); 2) equivalence and, hence, translatability problems in terms of the natural languages involved. Additionally, the question of ambiguity given the co-occurrence of terms in more than one class, will be discussed with reference to homographs and polysemantic words. In a thesaurus with such a wide coverage yet with a low specificity level, the method adopted in the thesaurus construction was to provide as many lead-in terms as possible and post them up to the closest in meaning broader term in order to improve the recall ratio
-
Tudhope, D.; Binding, C.; Blocks, D.; Cuncliffe, D.: Representation and retrieval in faceted systems (2003)
0.01
0.0061664553 = product of:
0.024665821 = sum of:
0.024665821 = product of:
0.049331643 = sum of:
0.049331643 = weight(_text_:project in 2703) [ClassicSimilarity], result of:
0.049331643 = score(doc=2703,freq=2.0), product of:
0.21156175 = queryWeight, product of:
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.050121464 = queryNorm
0.23317845 = fieldWeight in 2703, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.220981 = idf(docFreq=1764, maxDocs=44218)
0.0390625 = fieldNorm(doc=2703)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- This paper discusses two inter-related themes: the retrieval potential of faceted thesauri and XML representations of fundamental facets. Initial findings are discussed from the ongoing 'FACET' project, in collaboration with the National Museum of Science and Industry. The work discussed seeks to take advantage of the structure afforded by faceted systems for multi-term queries and flexible matching, focusing in this paper an the Art and Architecture Thesaurus. A multi-term matching function yields ranked results with partial matches via semantic term expansion, based an a measure of distance over the semantic index space formed by thesaurus relationships. Our intention is to drive the system from general representations and a common query structure and interface. To this end, we are developing an XML representation based an work by the Classification Research Group an fundamental facets or categories. The XML representation maps categories to particular thesauri and hierarchies. The system interface, which is configured by the mapping, incorporates a thesaurus browser with navigation history together with a term search facility and drag and drop query builder.
-
Gödert, W.: Multilingualität und Lokalisierung zur Wissenserkundung : oder vom Nutzen semantischer Netze für das Information Retrieval (2007)
0.01
0.0057428335 = product of:
0.022971334 = sum of:
0.022971334 = weight(_text_:library in 557) [ClassicSimilarity], result of:
0.022971334 = score(doc=557,freq=2.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.17430481 = fieldWeight in 557, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.046875 = fieldNorm(doc=557)
0.25 = coord(1/4)
- Abstract
- Das CrissCross-Projekt verfolgt die Zielsetzung, ein erweitertes multilinguales und thesaurusbasiertes Registervokabular zur Dewey-Dezimalklassifikation (DDC Deutsch) zu erstellen, das als Recherchevokabulars zu heterogen erschlossenen Dokumenten verwendet werden kann und soll damit die Ausgangsbedingungen für die Gestaltung von OPAC-Retrievalumgebungen verbessern helfen. Im einzelnen soll jedes Sachschlagwort der Schlagwortnormdatei (SWD) eine DDC-Notation erhalten und es sollen die im Projekt MACS begonnen Arbeiten fortgesetzt werden, Links zwischen den Schlagwörtern der SWD, den Library of Congress Subject Headings (LCSH) und dem Répertoire d'autorité-matière encyclopédique et alphabétique unifé (Rameau) herzustellen. In diesem Beitrag wird der Vorschlag gemacht, die Zielsetzung des Projektes darin zu sehen, eine Kern-Ontologie mit universalen Relationen als Klassifikation zu benutzen und die beteiligten Normdateien als zugeordnete semantische Netze zu entwickeln, indem nicht-generische Relationen die Aufgabe der durch die Lokalisierung gestellten Anforderungen übernehmen. Generische Relationen im bekannten Thesaurussinn sind für derartige semantische Netze nicht mehr erforderlich, da sie sich aus den generischen Beziehungen der Kern-Ontologie vererben.
-
Frâncu, V.: ¬A universal classification system going through changes (2001)
0.00
0.004785695 = product of:
0.01914278 = sum of:
0.01914278 = weight(_text_:library in 1593) [ClassicSimilarity], result of:
0.01914278 = score(doc=1593,freq=2.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.14525402 = fieldWeight in 1593, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.0390625 = fieldNorm(doc=1593)
0.25 = coord(1/4)
- Abstract
- In the early 1990s, indexing with classification codes from the Universal Decimal Classification (UDC) in an academic library, going from traditional to automated routines in any and all its activities, suddenly proved insufficient. Under the circumstances of online searching, the possibilities offered by the new OPAC looked much more attractive to indexers and searchers alike. Therefore, a quick shift to indexing with UDC and keywords instead of UDC numbers alone was made. Currency, precision and, more importantly, user-friendliness were strong advantages offered by keyword indexing and searching. But the larger the dictionary of keywords, the more problematic the consequences an information scattering, given the lack of control an terms. The present paper describes the advantages of the UDC in indexing by presenting some of the devices it is provided with: subdivision by analogy, common and special auxiliaries, use of synthesis, and use of connecting symbols. The solution of indexing with both UDC notation and words from a thesaurus based an UDC was prompted by some other characteristics of the schedules: a semi-faceted classification system, hierarchical organisation, richness in terminology and consistency and control of notation. The methodology used in building the thesaurus is conceived according to the international standards (ISO 2788 and 5964) to which some principles have been added, giving the specific approach of harmonising a classification structure with that of a thesaurus. Compatibility and translatability issues are also considered and some problems arising from them are treated in detail. Most of the problems discussed are illustrated with examples.
-
Bee, G.: CrissCross (2006)
0.00
0.0033499864 = product of:
0.013399946 = sum of:
0.013399946 = weight(_text_:library in 1275) [ClassicSimilarity], result of:
0.013399946 = score(doc=1275,freq=2.0), product of:
0.1317883 = queryWeight, product of:
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.050121464 = queryNorm
0.10167781 = fieldWeight in 1275, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6293786 = idf(docFreq=8668, maxDocs=44218)
0.02734375 = fieldNorm(doc=1275)
0.25 = coord(1/4)
- Content
- An diesem Punkt setzt das neue Projekt CrissCross an, das gemeinsam von der Deutschen Nationalbibliothek (DNB) und der Fachhochschule Köln betrieben und von der Deutschen Forschungsgemeinschaft (DFG) gefördert wird. CrissCross schafft Verbindungslinien zwischen einigen besonders verbreiteten und bewährten Erschließungsinstrumenten: Der deutschsprachigen Schlagwortnormdatei (SWD), den besonders im angloamerikanischen Raum verbreiteten Library of Congress Subject Headings (LCSH), der französischen Dokumentationssprache Répertoire d'autorité-matière encyclopédique et alphabétique unifié (Rameau) und der Dewey Decimal Classification (DDC) als dem international am meisten verbreiteten Klassifikationssystem. CrissCross kann dabei auf zwei wichtigen Vorgängerprojekten aufbauen. Hier ist zum einen das ebenfalls von DNB und der Fachhochschule Köln gemeinsam betriebene Vorgängerprojekt »DDC Deutsch« zu nennen. Bereits während dessen Laufzeit war deutlich geworden, wie vorteilhaft sich eine Anreicherung des DDC-Registers mit dem Schlagwortbestand der SWD auf die Klassifikationspraxis auswirken könnte. Genau dieser Schritt wird nun vollzogen, wobei sich die Projektarbeit auf die Sachschlagwörter konzentriert - kein kleines Unterfangen, beläuft sich doch die Zahl der zurzeit in der SWD befindlichen Datensätze mit dem Indikator s auf über 154.000.
