-
Poynder, R.: Web research engines? (1996)
0.04
0.03832564 = product of:
0.15330257 = sum of:
0.15330257 = weight(_text_:engines in 5698) [ClassicSimilarity], result of:
0.15330257 = score(doc=5698,freq=8.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.67362815 = fieldWeight in 5698, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.046875 = fieldNorm(doc=5698)
0.25 = coord(1/4)
- Abstract
- Describes the shortcomings of search engines for the WWW comparing their current capabilities to those of the first generation CD-ROM products. Some allow phrase searching and most are improving their Boolean searching. Few allow truncation, wild cards or nested logic. They are stateless, losing previous search criteria. Unlike the indexing and classification systems for today's CD-ROMs, those for Web pages are random, unstructured and of variable quality. Considers that at best Web search engines can only offer free text searching. Discusses whether automatic data classification systems such as Infoseek Ultra can overcome the haphazard nature of the Web with neural network technology, and whether Boolean search techniques may be redundant when replaced by technology such as the Euroferret search engine. However, artificial intelligence is rarely successful on huge, varied databases. Relevance ranking and automatic query expansion still use the same simple inverted indexes. Most Web search engines do nothing more than word counting. Further complications arise with foreign languages
-
Broughton, V.: Structural, linguistic and mathematical elements in indexing languages and search engines : implications for the use of index languages in electronic and non-LIS environments (2000)
0.02
0.015969018 = product of:
0.06387607 = sum of:
0.06387607 = weight(_text_:engines in 96) [ClassicSimilarity], result of:
0.06387607 = score(doc=96,freq=2.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.2806784 = fieldWeight in 96, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.0390625 = fieldNorm(doc=96)
0.25 = coord(1/4)
-
Drabenstott, K.M.; Vizine-Goetz, D.: Using subject headings for online retrieval : theory, practice and potential (1994)
0.02
0.015949111 = product of:
0.063796446 = sum of:
0.063796446 = product of:
0.12759289 = sum of:
0.12759289 = weight(_text_:programming in 386) [ClassicSimilarity], result of:
0.12759289 = score(doc=386,freq=2.0), product of:
0.29361802 = queryWeight, product of:
6.5552235 = idf(docFreq=170, maxDocs=44218)
0.04479146 = queryNorm
0.43455404 = fieldWeight in 386, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.5552235 = idf(docFreq=170, maxDocs=44218)
0.046875 = fieldNorm(doc=386)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- Using subject headings for Online Retrieval is an indispensable tool for online system desingners who are developing new systems or refining exicting ones. The book describes subject analysis and subject searching in online catalogs, including the limitations of retrieval, and demonstrates how such limitations can be overcome through system design and programming. The book describes the Library of Congress Subject headings system and system characteristics, shows how information is stored in machine readable files, and offers examples of and recommendations for successful methods. Tables are included to support these recommendations, and diagrams, graphs, and bar charts are used to provide results of data analyses.
-
Devadason, F.J.; Intaraksa, N.; Patamawongjariya, P.; Desai, K.: Faceted indexing application for organizing and accessing internet resources (2003)
0.01
0.012775214 = product of:
0.051100858 = sum of:
0.051100858 = weight(_text_:engines in 3966) [ClassicSimilarity], result of:
0.051100858 = score(doc=3966,freq=2.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.22454272 = fieldWeight in 3966, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.03125 = fieldNorm(doc=3966)
0.25 = coord(1/4)
- Abstract
- Organizing and providing access to the resources an the Internet has been a problem area in spite of the availability of sophisticated search engines and other Software tools. There have been several attempts to organize the resources an the WWW. Some of them have tried to use traditional library classification schemes such as the Library of Congress Classification, the Dewey Decimal Classification and others. However there is a need to assign proper subject headings to them and present them in a logical or hierarchical sequence to cater to the need for browsing. This paper attempts to describe an experimental system designed to organize and provide access to web documents using a faceted pre-coordinate indexing system based an the Deep Structure Indexing System (DSIS) derived from POPSI (Postulate based Permuted Subject Indexing) of Bhattacharyya, and the facet analysis and chain indexing System of Ranganathan. A prototype software system has been designed to create a database of records specifying Web documents according to the Dublin Core and input a faceted subject heading according to DSIS. Synonymous terms are added to the standard terms in the heading using appropriate symbols. Once the data are entered along with a description and URL of the Web document, the record is stored in the system. More than one faceted subject heading can be assigned to a record depending an the content of the original document. The system stores the surrogates and keeps the faceted subject headings separately after establishing a link. Search is carried out an index entries derived from the faceted subject heading using chain indexing technique. If a single term is input, the system searches for its presence in the faceted subject headings and displays the subject headings in a sorted sequence reflecting an organizing sequence. If the number of retrieved headings is too large (running into more than a page) then the user has the option of entering another search term to be searched in combination. The system searches subject headings already retrieved and look for those containing the second term. The retrieved faceted subject headings can be displayed and browsed. When the relevant subject heading is selected the system displays the records with their URLs. Using the URL the original document an the web can be accessed. The prototype system developed under Windows NT environment using ASP and web server is under rigorous testing. The database and indexes management routines need further development.
-
Devadason, F.J.; Intaraksa, N.; Patamawongjariya, P.; Desai, K.: Faceted indexing based system for organizing and accessing Internet resources (2002)
0.01
0.011178312 = product of:
0.044713248 = sum of:
0.044713248 = weight(_text_:engines in 97) [ClassicSimilarity], result of:
0.044713248 = score(doc=97,freq=2.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.19647488 = fieldWeight in 97, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.02734375 = fieldNorm(doc=97)
0.25 = coord(1/4)
- Abstract
- Organizing and providing access to the resources an the Internet has been a problem area in spite of the availability of sophisticated search engines and other Software tools. There have been several attempts to organize the resources an the World Wide Web. Some of them have tried to use traditional library classification schemes such as the Library of Congress Classification, the Dewey Decimal Classification and others. However there is a need to assign proper subject headings to them and present them in a logical or hierarchical sequence to cater to the need for browsing. This paper attempts to describe an experimental system designed to organize and provide access to web documents using a faceted pre-coordinate indexing system based an the Deep Structure Indexing System (DSIS) derived from POPSI (Postulate based Permuted Subject Indexing) of Bhattacharyya, and the facet analysis and chain indexing system of Ranganathan. A prototype Software System has been designed to create a database of records specifying Web documents according to the Dublin Core and to input a faceted subject heading according to DSIS. Synonymous terms are added to the Standard terms in the heading using appropriate symbols. Once the data are entered along with a description and the URL of the web document, the record is stored in the System. More than one faceted subject heading can be assigned to a record depending an the content of the original document. The System stores the Surrogates and keeps the faceted subject headings separately after establishing a link. The search is carried out an index entries derived from the faceted subject heading using the chain indexing technique. If a single term is Input, the System searches for its presence in the faceted subject headings and displays the subject headings in a sorted sequence reflecting an organizing sequence. If the number of retrieved Keadings is too large (running into more than a page) the user has the option of entering another search term to be searched in combination. The System searches subject headings already retrieved and looks for those containing the second term. The retrieved faceted subject headings can be displayed and browsed. When the relevant subject heading is selected the system displays the records with their URLs. Using the URL, the original document an the web can be accessed. The prototype system developed in a Windows NT environment using ASP and a web server is under rigorous testing. The database and Index management routines need further development.
-
Nuovo soggettario : guida al sistema italiano di indicizzazione per soggetto, prototipo del thesaurus (2007)
0.01
0.006387607 = product of:
0.025550429 = sum of:
0.025550429 = weight(_text_:engines in 664) [ClassicSimilarity], result of:
0.025550429 = score(doc=664,freq=2.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.11227136 = fieldWeight in 664, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.015625 = fieldNorm(doc=664)
0.25 = coord(1/4)
- Footnote
- Now BNI is beginning to use the new language, pointing the way for the adoption of Nuovo soggettario in Italian libraries: a difficult challenge whose success is not assured. To name only one issue: including all fields of study requires particular care in treating terms with different specialized meanings; cooperation of other libraries and institutions is foreseen. At the same time, efforts are being made to assure the system's interoperability outside the library world. It is clear that a great commitment is required. "Too complex a system!" say the naysayers. "Only at the beginning," the proponents reply. The new system goes against the mainstream, compared with the imitation of the easy way offered by search engines - but we know that they must enrich their devices to improve quality, just repeating the work on semantic and syntactic relationships that leads formal expressions to the meanings they are intended to communicate - and also compared with research to create automated devices supporting human work, for the need to simplify cataloguing. Here AI is not involved, but automation is widely used to facilitate and to support the conscious work of indexers guided by rules as clear as possible. The advantage of Nuovo soggettario is its combination of a thesaurus (a much-appreciated tool used across the world) with the equally widespread technique of subject-string construction, which is to say: the rational and predictable combination of the terms used. The appearance of this original, unparalleled working model may well be a great occasion in the international development of indexing, as, on one hand, the Nuovo soggettario uses a recognized tool (the thesaurus) and, on the other, by permitting both pre-coordination and post-coordination, it attempts to overcome the fragmentation of increasingly complex and specialized subjects into isolated, single-term descriptors. This is a serious proposition that merits consideration from both theoretical and practical points of view - and outside Italy, too."
-
Lambert, N.: Of thesauri and computers : reflections on the need for thesauri (1995)
0.01
0.0060686246 = product of:
0.024274498 = sum of:
0.024274498 = product of:
0.048548996 = sum of:
0.048548996 = weight(_text_:22 in 3734) [ClassicSimilarity], result of:
0.048548996 = score(doc=3734,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = 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)
0.25 = coord(1/4)
- Source
- Searcher. 3(1995) no.8, S.18-22
-
Stone, A.T.: Up-ending Cutter's pyramid : the case for making subject references to broader terms (1996)
0.01
0.0053100465 = product of:
0.021240186 = sum of:
0.021240186 = product of:
0.042480372 = sum of:
0.042480372 = weight(_text_:22 in 7238) [ClassicSimilarity], result of:
0.042480372 = score(doc=7238,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.2708308 = fieldWeight in 7238, 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=7238)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 22. 4.1997 20:43:23
-
Chan, L.M.; Hodges, T.: Entering the millennium : a new century for LCSH (2000)
0.00
0.0045514684 = product of:
0.018205874 = sum of:
0.018205874 = product of:
0.036411747 = sum of:
0.036411747 = weight(_text_:22 in 5920) [ClassicSimilarity], result of:
0.036411747 = score(doc=5920,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.23214069 = fieldWeight in 5920, 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=5920)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 27. 5.2001 16:22:21
-
Frommeyer, J.: Chronological terms and period subdivisions in LCSH, RAMEAU, and RSWK : development of an integrative model for time retrieval across various online catalogs (2004)
0.00
0.0045514684 = product of:
0.018205874 = sum of:
0.018205874 = product of:
0.036411747 = sum of:
0.036411747 = weight(_text_:22 in 131) [ClassicSimilarity], result of:
0.036411747 = score(doc=131,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.23214069 = fieldWeight in 131, 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=131)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 10. 9.2000 17:38:22
-
Leissing, U.; Rädler, K.; Hauer, M.: Query-Expansion durch Fachthesauri : Erfahrungsbericht zu dandelon.com, Vorarlberger Parlamentsinformationssystem und vorarlberg.at (2010)
0.00
0.0045514684 = product of:
0.018205874 = sum of:
0.018205874 = product of:
0.036411747 = sum of:
0.036411747 = weight(_text_:22 in 3728) [ClassicSimilarity], result of:
0.036411747 = score(doc=3728,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.23214069 = fieldWeight in 3728, 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=3728)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Source
- Wissensspeicher in digitalen Räumen: Nachhaltigkeit - Verfügbarkeit - semantische Interoperabilität. Proceedings der 11. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation, Konstanz, 20. bis 22. Februar 2008. Hrsg.: J. Sieglerschmidt u. H.P.Ohly
-
Anderson, J.D.; Pérez-Carballo, J.: Library of Congress Subject Headings (LCSH) (2009)
0.00
0.0045514684 = product of:
0.018205874 = sum of:
0.018205874 = product of:
0.036411747 = sum of:
0.036411747 = weight(_text_:22 in 3837) [ClassicSimilarity], result of:
0.036411747 = score(doc=3837,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.23214069 = fieldWeight in 3837, 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=3837)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 27. 8.2011 14:22:13
-
Milstead, J.L.: Thesauri in a full-text world (1998)
0.00
0.0037928906 = product of:
0.015171562 = sum of:
0.015171562 = product of:
0.030343125 = sum of:
0.030343125 = weight(_text_:22 in 2337) [ClassicSimilarity], result of:
0.030343125 = score(doc=2337,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = 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)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 22. 9.1997 19:16:05
-
Wiesenmüller, H.: Verbale Erschließung in Katalogen und Discovery-Systemen : Überlegungen zur Qualität (2021)
0.00
0.0037928906 = product of:
0.015171562 = sum of:
0.015171562 = product of:
0.030343125 = sum of:
0.030343125 = weight(_text_:22 in 374) [ClassicSimilarity], result of:
0.030343125 = score(doc=374,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.19345059 = fieldWeight in 374, 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=374)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 24. 9.2021 12:22:02
-
Geißelmann, F. (Hrsg.): Sacherschließung in Online-Katalogen (1994)
0.00
0.0037547702 = product of:
0.015019081 = sum of:
0.015019081 = product of:
0.030038161 = sum of:
0.030038161 = weight(_text_:22 in 4360) [ClassicSimilarity], result of:
0.030038161 = score(doc=4360,freq=4.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.19150631 = fieldWeight in 4360, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.02734375 = fieldNorm(doc=4360)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 15. 7.2018 16:22:16
- Footnote
- Rez. in: Mitteilungen VÖB 48(1995) H.1, S.66-68 (K. Niedermair) - Vgl. auch Lepsky, K. in: Bibliotheksdienst 29(1995) H.3, S.500-519; Bibliothek: Forschung u. Praxis 19(1995) H.2, S.251-254 (G. Hartwieg; auch in: LDV-Forum Bd. 12, Nr. 2, Jg. 1995, S.22-29 [unter: http://www.jlcl.org/1995_Heft2/Rezensionen_19-27.pdf]) .
