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Devadason, F.J.; Intaraksa, N.; Patamawongjariya, P.; Desai, K.: Faceted indexing based system for organizing and accessing Internet resources (2002)
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- 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.
An interesting but somewhat confusing article telling how the writers described web pages with Dublin Core metadata, including a faceted classification, and built a system that lets users browse the collection through the facets. They seem to want to cover too much in a short article, and unnecessary space is given over to screen shots showing how Dublin Core metadata was entered. The screen shots of the resulting browsable system are, unfortunately, not as enlightening as one would hope, and there is no discussion of how the system was actually written or the technology behind it. Still, it could be worth reading as an example of such a system and how it is treated in journals.
- Footnote
- Vgl. auch: Devadason, F.J.: Facet analysis and Semantic Web: musings of a student of Ranganathan. Unter: http://www.geocities.com/devadason.geo/FASEMWEB.html#FacetedIndex.
- Theme
- Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval
-
Devadason, F.J.; Intaraksa, N.; Patamawongjariya, P.; Desai, K.: Faceted indexing application for organizing and accessing internet resources (2003)
0.03
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- 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.
- Source
- Subject retrieval in a networked environment: Proceedings of the IFLA Satellite Meeting held in Dublin, OH, 14-16 August 2001 and sponsored by the IFLA Classification and Indexing Section, the IFLA Information Technology Section and OCLC. Ed.: I.C. McIlwaine
- Theme
- Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval
-
Blair, D.C.: Language and representation in information retrieval (1991)
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- Abstract
- Information or Document Retrieval is the subject of this book. It is not an introductory book, although it is self-contained in the sense that it is not necessary to have a background in the theory or practice of Information Retrieval in order to understand its arguments. The book presents, as clearly as possible, one particular perspective on Information Retrieval, and attempts to say that certain aspects of the theory or practice of the management of documents are more important than others. The majority of Information Retrieval research has been aimed at the more experimentally tractable small-scale systems, and although much of that work has added greatly to our understanding of Information Retrieval it is becoming increasingly apparent that retrieval systems with large data bases of documents are a fundamentally different genre of systems than small-scale systems. If this is so, which is the thesis of this book, then we must now study large information retrieval systems with the same rigor and intensity that we once studied small-scale systems. Hegel observed that the quantitative growth of any system caused qualitative changes to take place in its structure and processes.
- Classification
- ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
ST 270 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme
- COMPASS
- Information retrieval
- LCSH
- Information Retrieval
- RSWK
- Information Retrieval
- RVK
- ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
ST 270 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme
- Subject
- Information retrieval
Information Retrieval
Information Retrieval
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Poynder, R.: Web research engines? (1996)
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- 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
- Source
- Information world review. 1996, no.120, S.47-48
- Theme
- Verbale Doksprachen im Online-Retrieval
Klassifikationssysteme im Online-Retrieval
Semantisches Umfeld in Indexierung u. Retrieval
-
Intelligent information systems: progress and prospects (1986)
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- Content
- Enthält die Beiträge: SOMMERVILLE, I., M. WOOD: A software components catalogue; COELHO, H.: Library manager: a case study in knowledge engineering; DAVIES, R.: Cataloguing as a domain for an expert system; POLLITT, A.S.: A rule-base system as an intermediary for searching cancer therapy literature on MEDLINE; LEBOWITZ, M.: An experiment in intelligent information systems: RESEARCHER; VICKERY, A., H.M. BROOKS u. B.C. VICKERY: An expert system for referral: the PLEXUS project; RICH, E.: Users are individuals: individualizing user models; INGWERSEN, P.: Cognitive analysis and the role of the intermediary in information retrieval; SHAW, M.L.G. u. B.R. GAINES: A cognitive model for intelligent information systems; DAVIES, R.: Classification and ratiocination: a perennial quest
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Schabas, A.H.: Postcoordinate retrieval : a comparison of two retrieval languages (1982)
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- Abstract
- This article reports on a comparison of the postcoordinate retrieval effectiveness of two indexing languages: LCSH and PRECIS. The effect of augmenting each with title words was also studies. The database for the study was over 15.000 UK MARC records. Users returned 5.326 relevant judgements for citations retrieved for 61 SDI profiles, representing a wide variety of subjects. Results are reported in terms of precision and relative recall. Pure/applied sciences data and social science data were analyzed separately. Cochran's significance tests for ratios were used to interpret the findings. Recall emerged as the more important measure discriminating the behavior of the two languages. Addition of title words was found to improve recall of both indexing languages significantly. A direct relationship was observed between recall and exhaustivity. For the social sciences searches, recalls from PRECIS alone and from PRECIS with title words were significantly higher than those from LCSH alone and from LCSH with title words, respectively. Corresponding comparisons for the pure/applied sciences searches revealed no significant differences
- Source
- Journal of the American Society for Information Science. 33(1982), S.32-37
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Hjoerland, B.; Kyllesbech Nielsen, L.: Subject access points in electronic retrieval (2001)
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- Source
- Annual review of information science and technology. 35(2001), S.249-298
- Theme
- Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval
-
Lepsky, K.: RSWK - und was noch? : Stellungnahme zum Bericht 'Sacherschließung in Online-Katalogen' der Expertengruppe Online-Kataloge (1995)
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- Abstract
- "So haben wir inzwischen einen Stand der Diskussion erreicht, bei dem zwschen den Anforderungen an das, was Bibliotheken leisten sollten und dem, worüber Bibliothekare reden, eine immense Lücke klafft. Der Bericht der Expertengruppe Online-Kataloge ist dafür nur ein weiteres, leider trauriges Beispiel. Er ist aber auch - dies ist besonders zu bedauern - eine verpaßte Chance, denn hier hätte sich die ideale Gelegenheit geboten, für die neue Katalogform OPAC auch neue Möglichkeiten der Sacherschließung zu diskutieren. Da dies nicht geschehen ist, bleibt nur zu hoffen, daß unter dem sicher stärker werdenden Druck der Benutzer auf die Bibliotheken und deren Informationsangebot auch begonnen wird, offen über die bislang 'heilige Kuh' RSWK zu rden"
- Theme
- Verbale Doksprachen im Online-Retrieval
-
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)
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- Abstract
- The paper looks at ways in which traditional classification and indexing tools have dealt with the relationships between constituent terms; variations in these are examined and compared with the methods used in machine searching, particularly of the Internet and World Wide Web. Apparent correspondences with features of index languages are identified, and further methods of applying classification and indexing theory to machine retrieval are proposed. There are various ways in which indexing and retrieval systems, both conventional and electronic, deal with the problem of searching for documents on a subject basis, and various approaches to the analysis and processing of a query. There appear to be three basic models; the taxonomic or structural system, in which the user is offered a map of the `universe of knowledge'; the language based system, which offers a vocabulary of the subject and a grammar for dealing with compound statements; and the mathematical model using the language of symbolic logic or the algebra of set theory
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Gilchrist, A.: ¬The thesaurus in retrieval (1971)
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- LCSH
- Information retrieval
- RSWK
- Schlagwortnormdatei / Information Retrieval
- Subject
- Schlagwortnormdatei / Information Retrieval
Information retrieval
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Papadakis, I.; Stefanidakis, M.; Tzali, A.: Visualizing OPAC subject headings (2008)
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- Abstract
- Purpose - This paper aims at providing a robust, user-friendly and efficient navigation procedure in an online library catalog that is based on semantic information encapsulated within subject headings. Design/methodology/approach - The paper describes an interactive navigation procedure inside an online library catalog based on semantic information. The proposed approach is presented through a web-based, prototype application following the most recent trends of the semantic web such as AJAX technology and the web ontology language - OWL for encoding semantics. Findings - According to the proposed method, a GUI interface exposes the hierarchy of the subject headings employed within an OPAC, as well as all stated relations between such headings, as links that the user can follow, effectively traversing the ontology and formulating at the same time the actual query to the underlying OPAC. This act of interactive navigation through the library's assets aids searchers in accurately formulating their queries, by offering broader or narrower concepts for selection or indicating alternative or related concepts they might be initially unaware of. The augmented exposition of inter-relations between concepts provides multiple paths for information retrieval and enables searchers to fulfill their information needs in a faster, more efficient and intuitive manner. Practical implications - The paper includes implications for the development of modern, semantic web applications focused on the library domain. The novel approach of visualizing subject headings could be further extended to visualize a number of other conceptualizations of the library domain. Originality/value - This paper fulfils an identified need to take advantage of the "hidden knowledge" existing within the library domain but, for a number of reasons, is never exposed to the library users.
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Walsh, J.: ¬The use of Library of Congress Subject Headings in digital collections (2011)
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- Abstract
- Purpose - This paper attempts to explain the wide dissemination of Library of Congress Subject Headings (LCSH) within digital libraries and presents some of the advantages and disadvantages of using this controlled vocabulary in digital collections. The paper also presents other classifications used in digital collections for subject access and explores ways of improving search functionality in digital collections that employ LCSH. Design/methodology/approach - Unlike traditional libraries that use Library of Congress Classification for organization and retrieval, digital libraries use metadata forms for organization and retrieval. The collections exist in cyberspace of the internet which is known for containing the universe of knowledge. The use of LCSH for information retrieval has been widely criticized for its difficulty of use and its information retrieval effectiveness in online environments. The Library of Congress (LOC) has claimed the headings were not based on comprehensive principles nor ever intended to cover the universe of knowledge. Despite these claims and criticisms, LCSH is the most popular choice for subject access in digital libraries. Findings - The number of digital collections increases every year and LCSH is still the most popular choice of controlled vocabulary for subject access. Of the numerous criticisms, difficulties of use and user unfamiliarity are the greatest disadvantages of using LCSH for subject access. Average users only have a vague notion of what they are looking for when initializing a search. More work is required in automated generation of subject headings and increased usage of LCSH in faceted search retrieval systems. This will provide users with better access to the LCSH used in the back end of information retrieval. Originality/value - The Greek researchers who developed the Dissertation DSPace system believe this type of module will eventually replace the traditional keyword-based indexing back ends employed by many information retrieval modules within current digital library systems. The system offers the type of access and interactivity that will acquaint users with how LCSH looks and is used. Faceted search and automated pattern matching using an ontology based on LCSH have the best promise of overcoming the disadvantages that have always plagued the LOC-controlled vocabulary. These retrieval techniques give LCSH an opportunity to finally achieve the optimal precision and recall it has so far failed to deliver.
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Hauffe, H.: Sacherschließung bibliographischer Datenbanken und ihre Nutzung im Information Retrieval : Vortrag anläßlich der Tagung 'Automatisierte Sacherschließung - Status und Trends, Schloß Hofen, Lochau bei Bregenz, 17.4.-20.4.1989.
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- Theme
- Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval
-
O'Neill, E.T.; Bennett, R.; Kammerer, K.: Using authorities to improve subject searches (2012)
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- Abstract
- Authority files have played an important role in improving the quality of indexing and subject cataloging. Although authorities can significantly improve search by increasing the number of access points, they are rarely an integral part of the information retrieval process, particularly end-users searches. A retrieval prototype, searchFAST, was developed to test the feasibility of using an authority file as an index to bibliographic records. searchFAST uses FAST (Faceted Application of Subject Terminology) as an index to OCLC's WorldCat.org bibliographic database. The searchFAST methodology complements, rather than replaces, existing WorldCat.org access. The bibliographic file is searched indirectly; first the authority file is searched to identify appropriate subject headings, then the headings are used to retrieve the matching bibliographic records. The prototype demonstrates the effectiveness and practicality of using an authority file as an index. Searching the authority file leverages authority control work by increasing the number of access points while supporting a simple interface designed for end-users.
- Source
- Beyond libraries - subject metadata in the digital environment and semantic web. IFLA Satellite Post-Conference, 17-18 August 2012, Tallinn
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Keen, E.M.: Aspects of computer-based indexing languages (1991)
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- Abstract
- Comments on the relative rarity of research articles on theoretical aspects of subject indexing in computerised retrieval systems and the predominance of articles on software packages and hardware. Concludes that controlled indexing still has a future but points to major differences from the past
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Bates, M.J.: Subject access in online catalogs: a design model (1986)
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- Source
- Journal of the American Society for Information Science. 37(1986), S.357-367
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Piternick, A.B.: Vocabularies for online subject searching (1990)
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- Source
- Encyclopedia of library and information science. Vol.45, [=Suppl.10]
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Zeng, L.: Achieving compatibility of indexing languages in online access environment (1992)
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- Source
- Encyclopedia of library and information science. Vol.50, [=Suppl.13]
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Anderson, J.D.: Indexing and classification : file organization and display for information retrieval (1989)
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- Theme
- Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval
-
Cochrane, P.A.: Indexing and searching thesauri, the Janus or Proteus of information retrieval (1992)
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- Theme
- Verbale Doksprachen im Online-Retrieval
