Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.
© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 04. Juni 2021)
1Baliková, M.: Looking for the best way of subject access.
In: New pespectives on subject indexing and classification: essays in honour of Magda Heiner-Freiling. Red.: K. Knull-Schlomann, u.a. Leipzig : Deutsche Nationalbibliothek, 2008. S.281-287.
Abstract: M-CAST which stands for »Multilingual Content Aggregation System based on TRUST Search Engine« is a multilingual indexing and retrieval system based on semantic technology; it allows asking a question in one language and finding an exact answer in digitalized resources in different languages. It can serve as a monolingual query-answering system as well. Presently, we have a prototype of the M-CAST system; it was developed to evaluate both retrieval effectiveness and correctness of the interpretation process and has been tested in real-world situations. Further research will be done to increase the capabilities of the system. The M-CAST question-answering could be applied in both digital and hybrid libraries, because it enables to pose questions using either a set of search terms or natural-language questions. In addition, it enables to narrow a search in advanced search module using UDC (Universal Decimal Classification) system, which is widely used in libraries.
Themenfeld: Multilinguale Probleme
2Munzner, T.: Interactive visualization of large graphs and networks.
Abstract: Many real-world domains can be represented as large node-link graphs: backbone Internet routers connect with 70,000 other hosts, mid-sized Web servers handle between 20,000 and 200,000 hyperlinked documents, and dictionaries contain millions of words defined in terms of each other. Computational manipulation of such large graphs is common, but previous tools for graph visualization have been limited to datasets of a few thousand nodes. Visual depictions of graphs and networks are external representations that exploit human visual processing to reduce the cognitive load of many tasks that require understanding of global or local structure. We assert that the two key advantages of computer-based systems for information visualization over traditional paper-based visual exposition are interactivity and scalability. We also argue that designing visualization software by taking the characteristics of a target user's task domain into account leads to systems that are more effective and scale to larger datasets than previous work. This thesis contains a detailed analysis of three specialized systems for the interactive exploration of large graphs, relating the intended tasks to the spatial layout and visual encoding choices. We present two novel algorithms for specialized layout and drawing that use quite different visual metaphors. The H3 system for visualizing the hyperlink structures of web sites scales to datasets of over 100,000 nodes by using a carefully chosen spanning tree as the layout backbone, 3D hyperbolic geometry for a Focus+Context view, and provides a fluid interactive experience through guaranteed frame rate drawing. The Constellation system features a highly specialized 2D layout intended to spatially encode domain-specific information for computational linguists checking the plausibility of a large semantic network created from dictionaries. The Planet Multicast system for displaying the tunnel topology of the Internet's multicast backbone provides a literal 3D geographic layout of arcs on a globe to help MBone maintainers find misconfigured long-distance tunnels. Each of these three systems provides a very different view of the graph structure, and we evaluate their efficacy for the intended task. We generalize these findings in our analysis of the importance of interactivity and specialization for graph visualization systems that are effective and scalable.
Inhalt: Ph.D. dissertation, Stanford University, June 2000.
Anmerkung: Vgl. unter: http://graphics.stanford.edu/papers/munzner_thesis/all.onscreen.pdf bzw.: http://graphics.stanford.edu/papers/munzner_thesis/all.print.pdf.
Objekt: H3 ; Constellation ; Planet Multicast
3CAS's SciFinder and new SciFinder Scholar deliver access to comprehensive chemistry databases.
In: Information today. 14(1997) no.9, S.23.
Abstract: SciFinder Scholar, to be launched in Dec 97, is a graduate level tool for exploring 17 mio chemical substances and literature from 8.000 journals and patens in a database which is updated daily. It offers users: natural language subject searching; author searching, even with inexact spelling; various ways of exploring substances; and search by abstract or patent numbers. Chemical Abstracts Service have also launched SciFinder Substructure Module, intended to provide substructure access with the click of a mouse and so facilitate the generation of research ideas and the identification of useful derivatives
Objekt: CAS ; SciFinder
4Voregger, M.: Angriff der Heinzelmännchen : Steuern in den Informationsfluten des Webs - mit Hilfe digitaler Agenten.
In: Frankfurter Rundschau. Nr.183 vom 9.8.1997, S.M17.
Abstract: Beitrag mit Darstellung der Internet-Agenten
Anmerkung: Vgl.: http://bf.cstar.ac.com/bf (Bargain Finder); http://www.firefly.com (Firefly); http://www.agentware.com (Agentware); http://www.pointcast.com (Pointcast); http://www.freeloader.com (Freeloader)
Objekt: BargainFinder ; Firefly ; Agentware ; Pointcast ; Freeloader
5Tammaro, A.M.: Catalogando, catalogando ... metacatalogando.
In: Biblioteche oggi. 15(1997) no.1, S.10-14.
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
Anmerkung: Übers. des Titels: Cataloguing, cataloguing ... metacataloguing
Themenfeld: Internet ; Formalerschließung ; Metadaten
Objekt: USMARC ; IAFA ; SOIP ; TEI ; Capcas ; URC
6Tudor, J.D.: ¬The new alchemy using droids & agents to threat information overload.
In: Online. 21(1997) no.6, S.50-52,54-56,58.
Abstract: Reviews 3 WWW programmes that help deal with information overload. Farcast is a personalized new service in which all commands are delivered and information retrieval via email. It uses droids or electronic agents to search the full text of newsfeeds and send summaries. Quarterdeck's WebCompass is a search manager that employs multiple resources to search the Internet for relevant material based on user-defined queires. It generates summaries based on the most significant sentences in the entire document. Search results are displayed on a multi-pane interface. ForeFront Group's Web-Whacker automatically searches user-defined Web sites, organises them into categories and downloads them into a database that resides on the user's computer. The sites can then be browsed off-line
Objekt: WebCompass ; WebWhacker ; Farcast
7Cree, J.S.: Data conversion and migration at the libraries of the Home Office and the Department of the Environment.
In: Catalogue and index. 1997, no.124, S.1-5.
Abstract: Describes the experience of data conversion and migration at the libraries of the Home Office (HO) and the Dept. of the Environment (DoE), UK. Both HO and DoE libraries had changed from Anglo-American code cataloguing to AACR2 cataloguing in the mid-1970s. Both libraries were selective in identifying records for conversion initially to BLAISE-LOCAS. Conversion to integrated library systems from BLAISE-LOCAS MARC tapes produced problems in both libraries with location/holdings fields which were largely resolved at HO, but not resolved at DoE. HO experienced problems converting to a system with fixed field lengths. HO converted subject keywords to form a rudimentary, non-standard thesaurus which required the addition of Broader Term and Narrower Term to meet the challenge of computerized searching. DoE converted a non-thesaurus subject index to an authority file, but continued to maintain the index on a stand-alone DataEase application for use by cataloguers. Neither library converted acquisitions data
Themenfeld: Formalerschließung ; Normdateien
8Brunskill, K.: CASIAS services : a critical evaluation of the functionality, costs, impact and value.
London : British Library, 1996. 129 S.
(Research and innovation report; 4)
Abstract: Reports on a British Library Research and Innovation Centre supported examination of Current Awareness Services combined with Individual Article Supply (CASIAS). Reports 2 surveys of the academic research community at Aston University, UK, which: provided data about the usage levels of locally available services, and information about users' attitudes to, and use of, services, their reactions and resistance to CASIAS services in general, their general patterns of literature use, and their ideal services. Discusses the implications of their provision for both libraries and service providers
9Kluiters, C.C.P.: CAPCAS as a route to the digital library.
In: Information superhighway: the role of librarians, information scientists, and intermediaries. Festschrift in honor of Frederick Wilfred Lancaster. 17th International Essen Symposium, 24.-27.10.1994. Ed. A.H. Helal et al. Essen : Universitätsbibliothek, 1995. S.226-231.
(Publications of Essen University Library; 18)
Abstract: In 1991 Elsevier Science (ES) made the first real step towars the production of 'raw' material for the development of the digital library of the future. The step was CAPCAS (Computer Aided Production for Current Awareness Service). CAPCAS is an (internal) database containing the complete abstracts (title, authors, keywords, abstracts, authors' addresses), of, so far, more than 400 Elsevier journal titles. At present there are some 200.000 abstracts available through CAPCAS. In the Netherlands, the Library of the University of Tilburg (KUB) was among the first to receive a regular delivery of a selection from CAPCAS for their local storage and (electronic) dissemination via the University CWIS to their end-users. In 1993, ES and KUB, agreed to a commercial delivery of electronic articles/files (full text/full content) of some 100 journal titles also currently being supplied to the KUB in print form. The KUB is in the process of making these articles/files also available campus-wide. With Tokyo University, ES is experimenting with FTP/IP delivery of CAPCAS generated information, enhancing the speed of information
10Place, T.W.: From online contents to online articles : developing new library services at Tilburg University.
In: Information superhighway: the role of librarians, information scientists, and intermediaries. Festschrift in honor of Frederick Wilfred Lancaster. 17th International Essen Symposium, 24.-27.10.1994. Ed. A.H. Helal et al. Essen : Universitätsbibliothek, 1995. S.232-242.
(Publications of Essen University Library; 18)
Abstract: In 1990 Tilburg University started its Online Contents project: the scanning and OCR-ing of tables of contents of scientific journals. Since 1994 Elsevier Science supplies the full text of journal articles as TIFF and ASCII files. This article describes how new library services are made possible by developments like the one described above. A model of informative communication is introduced with which these new services can be put into perspective. the second part of the paper deals with the technical architecture that Tilburg University is developing necessary for the new library services
11Mottorn, J.C.: Current awareness : a review of automated tables of contents services.
In: Library management quarterly. 17(1994) no.3, S.7-9.
Abstract: Reviews the following services: ContentsFirst from OCLC; Current Contents from ISI; CASIAS from EBSCO; Faxon Finder; and UnCover. Essential criteria for a product of this type are a minimal effort from the library or information staff to compile and disseminate the service, and low associated costs
Objekt: ContentsFirst ; Current Contents ; CASIAS ; FaxonFinder
12Katritzky, A.R. ; Cato, S.J. ; Deyrup, J.A.: Comparison of the scope, timeliness, and quality of chemical abstracts from VINITI and CAS.
In: Journal of information science. 19(1993) no.3, S.199-210.
Abstract: Reports on a comparative study of the Referativnii Zhurnal Khimiya (RZK) and Chemical Abstracts Service (CAS) abstracting services. Determines the relative extent of coverage, the relative quality and the relative timeliness of the abstracting services. Considers how other Western abstracting services supplement CAS
Objekt: VINITI ; CAS