Search (137 results, page 1 of 7)

  • × theme_ss:"Klassifikationssysteme im Online-Retrieval"
  • × year_i:[1990 TO 2000}
  1. Liu, S.; Svenonius, E.: DORS: DDC online retrieval system (1991) 0.02 
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    Abstract
    A model system, the Dewey Online Retrieval System (DORS), was implemented as an interface to an online catalog for the purpose of experimenting with classification-based search strategies and generally seeking further understanding of the role of traditional classifications in automated information retrieval. Specifications for a classification retrieval interface were enumerated and rationalized and the system was developed in accordance with them. The feature that particularly distinguishes the system and enables it to meet its stated specifications is an automatically generated chain index
    Theme
    Klassifikationssysteme im Online-Retrieval
  2. Ardo, A.; Lundberg, S.: ¬A regional distributed WWW search and indexing service : the DESIRE way (1998) 0.02 
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    Abstract
    Creates an open, metadata aware system for distributed, collaborative WWW indexing. The system has 3 main components: a harvester (for collecting information), a database (for making the collection searchable), and a user interface (for making the information available). all components can be distributed across networked computers, thus supporting scalability. The system is metadata aware and thus allows searches on several fields including title, document author and URL. Nordic Web Index (NWI) is an application using this system to create a regional Nordic Web-indexing service. NWI is built using 5 collaborating service points within the Nordic countries. The NWI databases can be used to build additional services
    Date
    1. 8.1996 22:08:06
    Theme
    Klassifikationssysteme im Online-Retrieval
  3. Kent, R.E.: Organizing conceptual knowledge online : metadata interoperability and faceted classification (1998) 0.02 
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    Abstract
    Conceptual Knowledge Markup Language (CKML), an application of XML, is a new standard being promoted for the specification of online conceptual knowledge (Kent and Shrivastava, 1998). CKML follows the philosophy of Conceptual Knowledge Processing (Wille, 1982), a principled approach to knowledge representation and data analysis, which advocates the development of methodologies and techniques to support people in their rational thinking, judgement and actions. CKML was developed and is being used in the WAVE networked information discovery and retrieval system (Kent and Neuss, 1994) as a standard for the specification of conceptual knowledge
    Date
    30.12.2001 16:22:41
    Theme
    Klassifikationssysteme im Online-Retrieval
  4. Vizine-Goetz, D.: OCLC investigates using classification tools to organize Internet data (1998) 0.02 
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    Abstract
    The knowledge structures that form traditional library classification schemes hold great potential for improving resource description and discovery on the Internet and for organizing electronic document collections. The advantages of assigning subject tokens (classes) to documents from a scheme like the DDC system are well documented
    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
    Theme
    Klassifikationssysteme im Online-Retrieval
  5. Gödert, W.: Facet classification in online retrieval (1991) 0.02 
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    Abstract
    The study of faceted classification systems has primarily been directed towards application for precombined catalogues or bibliographies, not so much for use in post coordinated retrieval systems. Argues that faceted classification systems in some respects are superior to other techniques of on-line retrieval as far as facet and concept analysis is combined with an expressive notational system in order to guide a form of retrieval which will use Boolean operators (for combining the facets regardless of one special citation order) and truncation for retrieving hierarchically different sets of documents. This point of view is demonstrated by 2 examples. The 1st one uses a short classification system derived from B. Buchanan and the 2nd is built upon the classification system used by Library and Information Science Abstracts (LISA). Further discussion is concerned with some possible consequences which could be derived from a retrieval with PRECIS strings
    "Online retrieval" conjures up a very different mental image now than in 1991, the year this article was written, and the year Tim Berners-Lee first revealed the new hypertext system he called the World Wide Web. Gödert shows that truncation and Boolean logic, combined with notation from a faceted classification system, will be a powerful way of searching for information. It undoubtedly is, but no system built now would require a user searching for material on "nervous systems of bone fish" to enter "Fdd$ and Leaa$". This is worth reading for someone interested in seeing how searching and facets can go together, but the web has made this article quite out of date.
    Theme
    Klassifikationssysteme im Online-Retrieval
  6. Chan, L.M.: ¬The Library of Congress Classification System in an online environment (1990) 0.01 
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    Abstract
    Advantages and disadvantages of on-line classification access are presented with special attention to Library of Congress Classification (LCC) features for subject browsing, known item-searching, enhancement of keyword and controlled vocabulary searching, and other unique retrieval capabilities.
    Footnote
    Paper presented at the 2nd Annette Lewis Phinazee Symposium on Classification as an enhancement of intellectual access to information in an online environment, held at the School of Library and Information Sciences, North Carolina Central University, Durham, North Carolina.
    Theme
    Klassifikationssysteme im Online-Retrieval
  7. Welty, C.A.; Jenkins, J.: Formal ontology for subject (1999) 0.01 
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    Abstract
    Subject based classification is an important part of information retrieval, and has a long history in libraries, where a subject taxonomy was used to determine the location of books on the shelves. We have been studying the notion of subject itself, in order to determine a formal ontology of subject for a large scale digital library card catalog system. Deep analysis reveals a lot of ambiguity regarding the usage of subjects in existing systems and terminology, and we attempt to formalize these notions into a single framework for representing it.
    Theme
    Klassifikationssysteme im Online-Retrieval
  8. Pasanen-Tuomainen, I.: Analysis of subject searching in the TENTTU books database (1992) 0.01 
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    Abstract
    Presents a pilot study for an Internordic project to monitor the use of online catalogues in the Nordic technological university libraries. Focuses on the use of classification in subject searching, how the UDC is used and the extent of its use. Studies user interaction with the OPACs and improvements to information retrieval in the catalogues using the transaction log method to gather data. The pilot study examnines the TENTTU Books database which is the online union catalogue of the Helsinki Univ. of Technology Library, a multilingual database with true information retrieval. The Internordic study itself will make comparisons between the TENTTU system and the new Virginia Tech Library System. Discusses the users monitored, method of analysis, subject searching in the database, results and how the UDC codes were used. Compares this to other studies conducted in Finland and evaluates the project
    Theme
    Klassifikationssysteme im Online-Retrieval
  9. Liu, S.: Decomposing DDC synthesized numbers (1996) 0.01 
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    Abstract
    Much literature has been written speculating upon how classification can be used in online catalogs to improve information retrieval. While some empirical studies have been done exploring whether the direct use of traditional classification schemes designed for a manual environment is effective and efficient in the online environment, none has manipulated these manual classifications in such a w ay as to take full advantage of the power of both the classification and computer. It has been suggested by some authors, such as Wajenberg and Drabenstott, that this power could be realized if the individual components of synthesized DDC numbers could be identified and indexed. This paper looks at the feasibility of automatically decomposing DDC synthesized numbers and the implications of such decomposition for information retrieval. Based on an analysis of the instructions for synthesizing numbers in the main class Arts (700) and all DDC Tables, 17 decomposition rules were defined, 13 covering the Add Notes and four the Standard Subdivisions. 1,701 DDC synthesized numbers were decomposed by a computer system called DND (Dewey Number Decomposer), developed by the author. From the 1,701 numbers, 600 were randomly selected fo r examination by three judges, each evaluating 200 numbers. The decomposition success rate was 100% and it was concluded that synthesized DDC numbers can be accurately decomposed automatically. The study has implications for information retrieval, expert systems for assigning DDC numbers, automatic indexing, switching language development, enhancing classifiers' work, teaching library school students, and providing quality control for DDC number assignments. These implications were explored using a prototype retrieval system.
    Theme
    Klassifikationssysteme im Online-Retrieval
  10. Frost, C.O.: ¬The University of Michigan School of Information Art Image Browser : designing and testing a model for image retrieval (1996) 0.01 
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    Abstract
    A team at the University of Michigan School of Information designed, implemented and is evaluating a WWW-based experimental system which uses classification to facilitate browsing of art images. The research team built a database of approximately 3.000 digitized images from Art History to determine if classification can be used for retrieving images from a digital database in a networked environment. A key premise in this research is that browsing can serve an important role in retrieving image information. The system was evaluated in controlled tests and through a questionnaire available to WWW users
    Theme
    Klassifikationssysteme im Online-Retrieval
  11. Gowtham, M.S.; Kamat, S.K.: ¬An expert system as a tool to classification (1995) 0.01 
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    Abstract
    Describes the development by the Defence Metallurgical Research Laboratory, Hyderabad, India, of an expert system for classification of technical documents using the UDC schedule for metallurgy as knowledge base and the UDC classification rules as rule base. The scheme was modified from its enumerative structure to an analytico-synthetic structure which is best suited to such an expert system. Some benefits of the expert system are that: it interacts with the classifier making them conform to the route suggested by the classification scheme; it alerts the classifier to the minor variations in the scheme thus avoiding overlooking them; it leads to consistency in class number generation; and it ensures that the classifier has incorporated als the concepts of the subject in the class number, by leading him or her through all the groups, which is not possible in the manual scheme
    Source
    Library science with a slant to documentation and information studies. 32(1995) no.2, S.57-63
    Theme
    Klassifikationssysteme im Online-Retrieval
  12. Allen, R.B.: ¬Two digital library interfaces that exploit hierarchical structure (1995) 0.01 
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    Abstract
    Two library classification system interfaces have been implemented for navigating and searching large collections of document and book records. One interface allows the user to browse book records organized by the DDC hierarchy. A Book Shelf display reflects the facet position in the classification hierarchy during browsing, and it dynamically updates to reflect search hits and attribute selections. The other interface provides access to records describing computer science documents classified by the ACM Computing Reviews (CR) system. The CR classification system is a type of faceted classification in which documents can appear at several points in the hierarchy. These two interfaces demonstrate that classification structure can be effectively utilized for organizing digital libraries and, potentiall, collections of Internet-wide information services
    Footnote
    Auch unter: http:// awi.aw.com/DAGS95/Papers/allen.html. - http://superbook.bellcore.com/PAPERS/RBA/LIBR/libr.html - Vortrag anläßlich: DAGS95: Electronic publishing and the information superhighway.
    Source
    DAGS95: Electronic publishing and the information superhighway, May 30 - June, 2, Boston. Proceedings
    Theme
    Klassifikationssysteme im Online-Retrieval
  13. Pollitt, A.S.: ¬The key role of classification and indexing in view-based searching (1998) 0.01 
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    Abstract
    The application of classification schemes and thesauri to improve online information retrieval can be traced back to the beginnings of online searching itself, but the true potential for using knowledge structures in the user interface has yet to be realized. View-based searching seeks to exploit the classified arrangements in thesauri and existing classification schemes to improve the performance of such systems. HIBROWSE for EMBASE is a system which demonstrates the power of applying an approach to information retrieval which is strongly related to faceted classification. It does this by employing a point a click user interface with mutually constraining views utilising knowledge structure hierarchies for both query specification and the presentation of results. The relevance of this approach to library OPACs is discussed in the context of the digital library, concluding that out legacy of research in classification and indexing is more relevant than ever in the design of systems to cope with the problems of information access
    Theme
    Klassifikationssysteme im Online-Retrieval
  14. Comaromi, C.L.: Summation of classification as an enhancement of intellectual access to information in an online environment (1990) 0.01 
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    Date
    8. 1.2007 12:22:40
    Theme
    Klassifikationssysteme im Online-Retrieval
  15. Guenther, R.S.: ¬The USMARC Format for Classification Data : development and implementation (1992) 0.01 
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    Abstract
    This paper discusses the newly developed USMARC Format for Classification Data. It reviews its potential uses within an online system and its development as one of the USMARC standards for representing bibliographic and related information in machine-readable form. It provides a summary of the fields in the format, and considers the prospects for its implementation.
    Theme
    Klassifikationssysteme im Online-Retrieval
  16. Guenther, R.S.: ¬The development and implementation of the USMARC format for classification data (1992) 0.01 
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    Abstract
    This paper discusses the newly developed USMARC Format for Classification Data. It reviews its potential uses within an online system and its development as one of the USMARC standards. It provides a summary of the fields in the format and considers the prospects for its implementation. The papaer describes an experiment currently being conducted at the Library of Congress to create USMARC classification records and use a classification database in classifying materials in the social sciences
    Source
    Information technology and libraries. 11(1992) no.2, S.120-131
    Theme
    Klassifikationssysteme im Online-Retrieval
  17. Wyly, B.: What lies ahead for classification in information networks? : report of a panel discussion (1995) 0.01 
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    Abstract
    Ia McIlwaine, head of the Classification Research Group and editor of the UDC, noticed that the session's title invited crystal ball gazing, a talent she denied possessing. However, she admitted that she had asked the Classification Research Group to engage in such an exercise with her. The Group found, like the participants at the Allerton Institute were finding, that the contemplation of classification's future provided more questions than answers, but the questions were well worth considering. Her talk focused around a problem which originates in the difference between classifiers' uses and users' uses for classification systems. For users, who speak with the paraphrased self-confidence of Humpty Dumpty, a subject is a subject because they say it is. McIlwaine pointed out that this process of "saying" is at the heart of the users' needs which should be addressed by classification systems. Users use words to approach information systems and their associated classification systems. Classifiers need to recognize that this is the use to which their systems will be put. A body of users external to the classification process will make very different demands upon the system as compared to the users of the classification system who are also the creators of the system. Users desire information grouped for individual usefulness, and the groupings need to be according to words through which users can approach the system.
    Footnote
    Paper presented at the 36th Allerton Institute, 23-25 Oct 94, Allerton Park, Monticello, IL: "New Roles for Classification in Libraries and Information Networks: Presentation and Reports"
    Theme
    Klassifikationssysteme im Online-Retrieval
  18. Liu, S.: Decomposing DDC synthesized numbers (1997) 0.01 
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    Abstract
    Some empirical studies have explored the direct use of traditional classification schemes in the online environment; none has manipulated these manual classifications in such a way as to take full advantage of the power of both the classification and computer. It has been suggested that this power could be realized if the individual components of synthesized DDC numbers could be identified and indexed. Looks at the feasibility of automatically decomposing DDC synthesized numbers and the implications of such decompositions for informational retrieval. 1.701 sythesized numbers were decomposed by a computer system called DND (Dewey Number Decomposer). 600 were randomly selected for examination by 3 judges, each evaluating 200 numbers. The decomposition success rate was 100% and it was concluded that synthesized DDC numbers can be accurately decomposed automatically. The study has implications for information retrieval, expert systems for assigning DDC numbers, automatic indexing, switching language development and other important areas of cataloguing and classification
    Theme
    Klassifikationssysteme im Online-Retrieval
  19. Neelameghan, A.: S.R. Ranganathan's general theory of knowledge classification in designing, indexing and retrieving from specialised databases (1997) 0.01 
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    Abstract
    Summarizes some experiences of the application of the priciples and postulates of S.R. Ranganathan's General Theory of Knowledge Classification, incorporating the freely faceted approach and analytico synthetic methods, to the design and development of specialized databases, including indexing, user interfaces and retrieval. Enumerates some of the earlier instances of the facet method in machine based systems, beginning with Hollerith's punched card system for the data processing of the US Census. Elaborates on Ranganathan's holistic approach to information systems and services provided by his normative principles. Notes similarities between the design of databases and faceted classification systems. Examples from working systems are given to demonstrate the usefulness of selected canons and principles of classification and the analytico synthetic methodology to database design. The examples are mostly operational database systems developed using Unesco's Micro CDS-ISIS software
    Source
    Library science with a slant to documentation and information studies. 34(1997) no.1, S.3-53
    Theme
    Klassifikationssysteme im Online-Retrieval
  20. Ellis, D.; Vasconcelos, A.: Ranganathan and the Net : using facet analysis to search and organise the World Wide Web (1999) 0.01 
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    Abstract
    This article gives a cheerfully brief and undetailed account of how to make a faceted classification system, then describes information retrieval and searching on the web. It concludes by saying that facets would be excellent in helping users search and browse the web, but offers no real clues as to how this can be done.
    Theme
    Klassifikationssysteme im Online-Retrieval

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