Search (17 results, page 1 of 1)

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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

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Abstract

Discusses the goals and outcome of the OCLC/NCSA Metadata Workshop, held in Dublin, Ohio, 1-3 Mar 95, which resulted in the proposed 'Dublin Core' Metadata Elements. Describes an attempt to map the Dublin Core data elements to the USMARC format (with particular reference to USMARC field 856 for electronic locations), noting problems and outstanding questions. The USMARC format elements considered include: subject, title, author, other-agent, publisher, publication date, identifier, object-type, form, relation, language, source, coverage, and other issues

Series

Cataloging and classification quarterly; vol.22, nos.3/4

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Abstract

The main objective of the proposed high-level 'Visual Repository Definition Language' is to anbale advanced Web presentation of large amounts of exisitng heterogeneous information. Statements of the language serve to describe the desired structure of information repositories, which are composed of metadata entities encapsulating the original data. Such approach helps to to avoid the usual relocation and restructuring of data that occurs when providing Web access to it. The language has been designed to be useful even for inexperienced programmers. Its applicability is demonstrated by a real example, creating a repository of judicial opinions from publicly available raw data

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Abstract

Describes the evolving ways of making documents and document like objects bibliographically accessible by the library cataloguing community and reports initiatives. Includes: definition of a basic set of data elements known as the Dublin Core; examination of library cataloguing objectives and record structures; proposals for persistent addresses for resources; and support for the idea of data registry to facilitate interoperability among metadata schemes

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Abstract

Describes the structure of metadata formats with particular reference to the taxonomy of data formats set out by the BIBLINK report of the UK Office for Library and Information Networking and based on their underlying complexity. Referes to 3 main types of metadata: Dublin Core; MARC and Federal Geographic Data Committee (FGDC). Provides practical examples of the actual codings used, illustrated with reference to the Dublin Core, Marc and FGDC elements in selected Web sites. Ends with a glossary and a list of Web sites containing background information on metadata, such as the IAMSLIC metadata homepage

Source

Data or information: the fading boundaries. Proceedings of the 23rd Annual Conference of the International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC), Charleston, South Carolina, 5-9 Oct. 1997. Ed.: J.W. Markham et al

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Abstract

Reports results of a study of 4 WWW search engines: AltaVista; Lycos; Excite and WebCrawler to collect data on Web objects on polymer chemistry. 1.037 Web objects were examined for data in 4 categories: document information; use of meta fields; use of images and use of chemical names. Issues raised included: whether to provide metadata elements for parts of entities or whole entities only, the use of metasyntax, problems in representation of special types of objects, and whether links should be considered when encoding metadata. Use of metafields was not widespread in the sample and knowledge of metafields in HTML varied greatly among Web object creators. The study formed part of a metadata project funded by the OCLC Library and Information Science Research Grant Program

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Abstract

Discusses how information will be found in digital libraries of the future. Suggests that a metadata approach to cataloguing will prevail, whereby the content of the data will be analysed at source, rather than on receipt by an intermediary, altering the role of the cataloguer, who will be required to evaluate as well as classify and index. Web site administrators may have to provide site metadata for use by global indexers; provides some examples of projects aimed at developing standards and assisting information providers in creating descriptive metadata

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Content

The PICS, an initiative of W3C, is a technology that supports the association of descriptive labels with Web resources. By providing a single common transport syntax for metadata, PICS will support the growth of metadata systems (including library cataloguing) that are interoperable and widely supported in Web information systems. Within the PICS framework, a great diversity of resource description models can be implemented, from simple rating schemes to complex data content standards

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Abstract

A crucial question for librarians is whether to catalogue Internet information sources, and electronic sources in general, which may contain metainformation of the texts of articles. Librarians can help researchers with data identification and access in 4 ways: making OPAC available on the Internet; providing a complete selection of Gopher, Ftp, WWW, etc. site lists; maintaining a Web site, coordinateted by the library, that functions as an Internet access point; and organising access to existing search engines that do automatic indexing. Briefly reviews several metadata formats, including USMARC field 856, IAFA templates, SOIP (Harvest), TEI Headers, Capcas Head and URC

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Source

Data or information: the fading boundaries. Proceedings of the 23rd Annual Conference of the International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC), Charleston, South Carolina, 5-9 Oct. 1997. Ed.: J.W. Markham et al

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Abstract

A 1 day seminar was held in Aug 1997, in Synney, Australia, sponsored by the Information science Section of the australia Library and Information Association, on metadata. It focused on building a conceptual framework for metadata. The National Library is developing PANDORA (Preserving and Accessing Networked documentary Resources of Australia) an electronic archive designed to provide long term access to significant Australian online publications. An architecture for access to government information has been developed. The Distributed System Technology Centre's Resource Discivery Project Unit has developed an information presentation tool called HyperIndex and a meta-data searcher called HotOIL

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Abstract

We propose an extension of a mediator architecture. This extension is oriented to ontology-driven data integration. In our architecture ontologies are not managed by an extemal component or service, but are integrated in the mediation layer. This approach implies rethinking the mediator design, but at the same time provides advantages from a database perspective. Some of these advantages include the application of optimization and evaluation techniques that use and combine information from all abstraction levels (physical schema, logical schema and semantic information defined by ontology). 1. Introduction Although the Web is probably the richest information repository in human history, users cannot specify what they want from it. Two major problems that arise in current search engines (Heflin, 2001) are: a) polysemy, when the same word is used with different meanings; b) synonymy, when two different words have the same meaning. Polysemy causes irrelevant information retrieval. On the other hand, synonymy produces lost of useful documents. The lack of a capability to understand the context of the words and the relationships among required terms, explains many of the lost and false results produced by search engines. The Semantic Web will bring structure to the meaningful content of Web pages, giving semantic relationships among terms and possibly avoiding the previous problems. Various proposals have appeared for meta-data representation and communication standards, and other services and tools that may eventually merge into the global Semantic Web (Berners-lee, 2001). Hopefully, in the next few years we will see the universal adoption of open standards for representation and sharing of meta-information. In this environment, software agents roaming from page to page can readily carry out sophisticated tasks for users (Berners-Lee, 2001). In this context, ontologies can be seen as metadata that represent semantic of data; providing a knowledge domain standard vocabulary, like DTDs and XML Schema do. If its pages were so structured, the Web could be seen as a heterogeneous collection of autonomous databases. This suggests that techniques developed in the Database area could be useful. Database research mainly deals with efficient storage and retrieval and with powerful query languages.

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Date

22. 5.1998 18:45:36

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Content

Bericht über den Workshop, der am 22. u. 23.6.98 in der SUB Göttingen stattfand

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Abstract

This paper deals with the problem of modeling Web information resources using expert knowledge and personalized user information for improved Web searching capabilities. We propose a "Web information space" model, which is composed of Web-based information resources (HTML/XML [Hypertext Markup Language/Extensible Markup Language] documents an the Web), expert advice repositories (domain-expert-specified metadata for information resources), and personalized information about users (captured as user profiles that indicate users' preferences about experts as well as users' knowledge about topics). Expert advice, the heart of the Web information space model, is specified using topics and relationships among topics (called metalinks), along the lines of the recently proposed topic maps. Topics and metalinks constitute metadata that describe the contents of the underlying HTML/XML Web resources. The metadata specification process is semiautomated, and it exploits XML DTDs (Document Type Definition) to allow domain-expert guided mapping of DTD elements to topics and metalinks. The expert advice is stored in an object-relational database management system (DBMS). To demonstrate the practicality and usability of the proposed Web information space model, we created a prototype expert advice repository of more than one million topics/metalinks for DBLP (Database and Logic Programming) Bibliography data set. We also present a query interface that provides sophisticated querying fa cilities for DBLP Bibliography resources using the expert advice repository.

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Source

Cataloguing Australia. 23(1997) nos.1/2, S.17-22

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Date

1. 8.1996 22:08:06