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Kirriemuir, J.; Brickley, D.; Welsh, S.; Knight, J.; Hamilton, M.: Cross-searching subject gateways : the query routing and forward knowledge approach (1998) 0.02
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Abstract

A subject gateway, in the context of network-based resource access, can be defined as some facility that allows easier access to network-based resources in a defined subject area. The simplest types of subject gateways are sets of Web pages containing lists of links to resources. Some gateways index their lists of links and provide a simple search facility. More advanced gateways offer a much enhanced service via a system consisting of a resource database and various indexes, which can be searched and/or browsed through a Web-based interface. Each entry in the database contains information about a network-based resource, such as a Web page, Web site, mailing list or document. Entries are usually created by a cataloguer manually identifying a suitable resource, describing the resource using a template, and submitting the template to the database for indexing. Subject gateways are also known as subject-based information gateways (SBIGs), subject-based gateways, subject index gateways, virtual libraries, clearing houses, subject trees, pathfinders and other variations thereof. This paper describes the characteristics of some of the subject gateways currently accessible through the Web, and compares them to automatic "vacuum cleaner" type search engines, such as AltaVista. The application of WHOIS++, centroids, query routing, and forward knowledge to searching several of these subject gateways simultaneously is outlined. The paper concludes with looking at some of the issues facing subject gateway development in the near future. The paper touches on many of the issues mentioned in a previous paper in D-Lib Magazine, especially regarding resource-discovery related initiatives and services.
Wolf, S.: Neuer Meilenstein für BASE : 90 Millionen Dokumente (2016) 0.01
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Abstract

BASE (https://www.base-search.net) ermöglicht seit Anfang April eine Suche nach über 90 Millionen Dokumenten, deren Metadaten von über 4.200 Dokumentenservern (Repositories) wissenschaftlicher Institutionen weltweit bereit gestellt werden. Damit ist BASE nach Google Scholar die größte Suchmaschine für wissenschaftliche, frei im Internet verfügbare Dokumente. Für über 30 Mio. Dokumente, die in BASE zu finden sind, können wir aufgrund von Informationen in den Metadaten einen Open-Access-Status ausweisen, insgesamt schätzen wir den Open-Access-Anteil derzeit auf 60%. Über ein Boosting-Verfahren werden Nachweise zu Open-Access-Dokumenten bevorzugt angezeigt, ebenso ist ein gezieltes Suchen unter Berücksichtigung verschiedener Lizenz- und Rechteangaben möglich. Der BASE-Index steht über verschiedene Schnittstellen zahlreichen anderen kommerziellen und nicht-kommerziellen Discovery-Systemen, Suchmaschinen, Datenbankanbietern, Fachbibliotheken und Entwicklern zur Nachnutzung zur Verfügung. BASE trägt damit wesentlich zur Nutzung von Inhalten auf Dokumentservern bei. Weitere Informationen: https://www.base-search.net/

Place, E.: Internationale Zusammenarbeit bei Internet Subject Gateways (1999) 0.01

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Date: 22. 6.2002 19:35:09

Blosser, J.; Michaelson, R.; Routh. R.; Xia, P.: Defining the landscape of Web resources : Concluding Report of the BAER Web Resources Sub-Group (2000) 0.01

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Date: 21. 4.2002 10:22:31

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