Search (17 results, page 1 of 1)

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Abstract

The goal of the State Library of Queensland's Metadata Project is the deployment of metadata using the Dublin Core Metadata Element Set in the State Library' WWW Web pages. The deployment of metadata is expected to improve resource discovery by Internet users, through provision of index information (metadata) in State Library Web pages which is then available to search engines for indexing. The project is also an initial attempt to set standards for metadata deployment in queensland libraries Web pages

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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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Abstract

Emphasizes the increased importance of the role of the librarian as a 'human' interface in the organization and retrieval of resources in the networked environment. Comments on the recent increase in metadata and compares the long established MARC format and adaptations of MARC with several other alternative metadata systems. Outlines the use of embedded META tag information in HTML documents and describes how existing search engines find and index resources on the WWW, with their pros and cons. Discusses the implications for effective research of the inherent limitations of these automated indexing schemes

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Abstract

Subject oriented information sources on the Internet remain relativley unstructured despite attempts at indexing them and despite the use of search engines to index sources in a collective database and to retrieve relevant information sources. Describes the rationale for developing a means to capture and structure Internet resources for scientific research use in a clearinghouse, and methods for retrieval, information filtering, and structuring subject orientated information sources from the Internet for specific user groups. Discusses the issues of design, maintenance, implementation of metadata, and obtaining use feedback. Cooperation among several institutions involved in the German national subject special collections (SSG) library support programme of the DFG have led to recommendations to expand this programme to include coordination of collective Internet subject information sites. In addition to the compilation of subject oriented information sites on the Internet by library and information staff, connection to other value added services serve to make processes of information searching, retrieval, acquisition, and evaluation more effective for researchers

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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

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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Abstract

Discusses the development and implementation of models for indexing and searching information resources on the Internet. Examines briefly the results of a simple query on a number of existing search systems and discusses 2 proposed index metadata structures for indexing and supporting search and discovery: The Dublin Core Elements List and the Semantic Header. Presents an indexing and discovery system based on the Semantic Header

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Abstract

At present cataloguing of Internet resources are on 2 levels. At level 1, the description of resources is contained in local library catalogues, along with bibliographic surrogates for all other materials that the library access, based on AACR2/MARC systems. At level 2, Internet resources are organized independently of any library agency. These include separate catalogues of selected resources, subject browsing lists and robot-generated search tools, and focus exclusively on Internet resources. A 3rd level needs to be developed - a metacatalogue - whereby a user can identify specific library catalogues to include in a search query of other Internet databases

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Abstract

We discuss the issues of resolving the information-retrieval problem in large digital collections through the identification and use of document genres. Explicit identification of genre seems particularly important for such collections because any search usually retrieves documents with a diversity of genres that are undifferentiated by obvious clues as to their identity. Also, because most genres are characterized by both form and purpose, identifying the genre of a document provides information as to the document's purpose and its fit to the user's situation, which can be otherwise difficult to assess. We begin by outlining the possible role of genre identification in the information-retrieval process. Our assumption is that genre identification would enhance searching, first because we know that topic alone is not enough to define an information problem and, second, because search results containing genre information would be more easily understandable. Next, we discuss how information professionals have traditionally tackled the issues of representing genre in settings where topical representation is the norm. Finally, we address the issues of studying the efficacy of identifying genre in large digital collections. Because genre is often an implicit notion, studying it in a systematic way presents many problems. We outline a research protocol that would provide guidance for identifying Web document genres, for observing how genre is used in searching and evaluating search results, and finally for representing and visualizing genres.

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Abstract

This paper describes emerging metadata practice and standards. It gives an overview of the environments in which metatdata is used, before focusing on metadata for information resources. It outlines an approximate typology of approaches and explores different strands of metadata activity. It discusses trends in format development, metadata management, and use of search and retrieve protocols. It concludes by discussing some features of future deploament of metadata in support of network resource discovery

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Abstract

The Day was held in Oct 96 to inform about developments in dexcription of electronic documents. Metadata are necessary to aid handling of electronic network resources. A workshop in Dublin Mar 95 compiled 13 elements needed to identify a document-like object, while the Warwick workshop Apr 96 proposed a framework for electronic entries with more metadata types than the Dublin Core. The Nordic Metadata Project aims to evaluate existing metadata format; develop the Dublic Core; make conversion of the Core to the Nordic MARC format possible; and set up a metadata search service for Nordic Internet documents. At the 2nd International Conference on Conceptions of Library and Information Science, Copenhagen Oct 96 a metadata structure for research profiles on Internet homepages was proposed

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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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Source

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

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Series

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

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Date

1. 8.1996 22:08:06

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Date

30.12.2001 16:22:41