Literatur zur Informationserschließung

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: 28. April 2022)

Suchergebnisse

• 1
  Stock, M. ; Stock, W.G.: Intellectual property information : A comparative analysis of main information providers.
  In: Journal of the American Society for Information Science and Technology. 57(2006) no.13, S.1794-1803.
  
  Abstract: After modeling expert user needs with regard to intellectual property information, we analyze and compare the main providers in this specific information area (Thomson DIALOG, Esp@cenet by the European Patent Office, Questel-Orbit, and STN International) in terms of system content and system functionality. The key question is whether the main providers are able to satisfy these expert user needs. For patent information, some special retrieval features such as chemical structure search (including Markush search), patent family references and citations search, biosequence search, and basic informetric functionality such as ranking, mapping, and visualization of information flows are realized. Considering the results of information science research, the practice of patent information shows unexhausted improvement opportunities (e.g., the application of bibliographic patent coupling and co-patent-citation for mapping patents, patent assignees, and technology specialties). For trademark search, users need multiple truncated search (realized) as well as phonetic search and image retrieval (not realized yet).
  
  Themenfeld: Informationsmittel
  Wissenschaftsfach: Patentinformation
  Objekt: Thomson DIALOG ; Esp@cenet ; Questel-Orbit ; STN International
  
  
• 2
  Stock, M. ; Stock, W.G.: Online-Hosts für Wissenschaft, Technik und Medizin auf dem deutschen Informationsmarkt : Eine komparative Analyse.
  In: Password. 2005, H.2, S.18-23.
  
  Abstract: Wir vergleichen die Content-Aggregatoren DataStar, DIALOG, DIMDI, FIZ Karlsruhe (STN International), FIZ Technik, Ovid, Questel-Orbit and Thomson Scientific's Web of Knowledge hinsichtlich ihrer Stellung auf dem Markt elektronischer Informationsdienste in Deutschland. Besprochen werden die Wettbewerbssituation sowie die Kooperationen, die Stärken bzw. Alleinstellungsmerkmale der Informationsanbieter und die kritischen Erfolgsfaktoren der WTMHosts. Marktführer ist in Deutschland eindeutig STN.
  
  Themenfeld: Informationsmittel ; Internet
  Wissenschaftsfach: Naturwissenschaften ; Ingenieurwissenschaften ; Medizin
  Objekt: DataStar ; DIALOG ; DIMDI ; FIZ Karlsruhe ; STN International ; FIZ Technik ; Ovid ; Questel-Orbit ; Thomson Scientific's Web of Knowledge
  
  
• 3
  Deutsche Patentdatenbank mit maschinellen Abstract-Übersetzungen.
  In: Password. 2005, H.2, S.32.
  
  Abstract: Dialog hat sein Angebot um eine deutsche Patentdatenbank des niederländischen Patentinformationsanbieters mit 3,1 Millionen Volltexten in deutscher Sprache ab 1967 ausgeweitet. Die Dokumente ab 1980 enthalten maschinell übersetzte Abstracts in englischer Sprache, die dem Deutschunkundigen einen ersten Überblick über die gefundenen Dokumente ermöglichen. Die Dokumente sind vier bis fünf Tage nach der Veröffentlichung durch das Deutsche Patentamt recherchierbar. Univentio bietet über Dialog auch WIPO/PCT im Volltext an.
  
  Themenfeld: Automatisches Abstracting
  Wissenschaftsfach: Patentinformation
  Objekt: Dialog
  
  
• 4
  Hood, W.W. ; Wilson, C.S.: ¬The scatter of documents over databases in different subject domains : how many databases are needed?.
  In: Journal of the American Society for Information Science and technology. 52(2001) no.14, S.1242-1254.
  
  Abstract: The distribution of bibliographic records in on-line bibliographic databases is examined using 14 different search topics. These topics were searched using the DIALOG database host, and using as many suitable databases as possible. The presence of duplicate records in the searches was taken into consideration in the analysis, and the problem with lexical ambiguity in at least one search topic is discussed. The study answers questions such as how many databases are needed in a multifile search for particular topics, and what coverage will be achieved using a certain number of databases. The distribution of the percentages of records retrieved over a number of databases for 13 of the 14 search topics roughly fell into three groups: (1) high concentration of records in one database with about 80% coverage in five to eight databases; (2) moderate concentration in one database with about 80% coverage in seven to 10 databases; and (3) low concentration in one database with about 80% coverage in 16 to 19 databases. The study does conform with earlier results, but shows that the number of databases needed for searches with varying complexities of search strategies, is much more topic dependent than previous studies would indicate.
  
  Themenfeld: Informetrie ; Retrievalstudien
  Objekt: Dialog
  
  
• 5
  DIALOG announces DialogSelect 2.0.
  In: Advanced technology libraries. 27(1998) no.7, S.10.
  
  Abstract: The DIALOG Coorporation, CA, have annonced DialogSelect 2.0, a WWW based, guided search service with access to over 300 of the most popular DIALOG databases
  
  Themenfeld: Suchoberflächen ; Internet
  Objekt: DialogSelect
  
  
• 6
  Feldman, S.: ¬The Internet search-off.
  In: Searcher. 6(1998) no.2, S.28-35.
  
  Abstract: Reprots the results of a study which sought indications of the effectiveness of searching for information on the WWW versus the traditional online vendors, for comparisons of how it took to search, and for comments on the relative value of the results retrieved. Professional searchers were invited to search for answers to the same questions on both the WWW and on either DIALOG or Dow Jones Interactive. Overall DIALOG / Dow Jones Interactive retrieved more relevant documents and total searching time was more than double for finding information on the Web. Summarizes the comments from searchers on: searching assumptions of professional searchers; the subjects and types of searches for which DIALOG and Dow Jones Interactive showed superiority; areas where the Web has advantages over traditional online services; and uses for which both traditional online vendors and the Web can supplement each other. Lists nine searching principles for maximizing success when using Web search engines
  
  Themenfeld: Internet
  Objekt: Dialog ; Dow Jones Interactive
  
  
• 7
  Dialog launches new portal to classic Dialog, announces major enhancements to DialogWeb.
  In: Information today. 15(1998) no.10, S.3,70.
  
  Abstract: Dialog have lauched DialogClassic. Called a Web portal it offers information professionals a high speed alternative for users who access command-based databases via telnet or third party communications software. The streamlined non graphical interface enables faster page loading and display and printing of large quantities of records using the browser's local cache settings and system resources. Version 2.0 of DialogWeb will be lauched by the end of 1998. Aimed at information professionals who want command language, but who also want to an easy to use Web interface for end users, it will include an improved subject classification scheme and guided search mode
  
  Anmerkung: Vgl.: http://www.dialogclassic.com und http://www.dialogweb.com
  
  Themenfeld: Internet
  Objekt: Dialog ; DialogWeb
  
  
• 8
  O'Leary, M.: DIALOG Select : DIALOG for knowledge worker-on the Web.
  In: Online. 21(1997) no.6, S.40-42.
  
  Abstract: Reviews DIALOG Select: DIALOG's latest end user service which is delivered via the WWW and targeted at knowledge workers in business and sci-tech professions. It covers 250 of DIALOG's databases. Database selection and initial searching is through a classified set of menus. Formatted screens are then used to develop search queries. Initial results are displayed in short form and arrangement is by date. Pricing is by record charges plus connect time for search operation. Although it is a highly effective search tool, the service is lacking many of the facilities Web users expect
  
  Anmerkung: Vgl.: http://dialogselect.krinfo.com
  
  Themenfeld: Internet
  Objekt: Dialog
  
  
• 9
  O'Leary, M.: DIALOG debuts Web version.
  In: Information today. 14(1997) no.5, S.18,28.
  
  Abstract: Reviews DIALOG Web comparing it with proprietary DIALOG. DIALOG Web will be followed later in the year by DIALOG Select, an end-user version with fewer databases and a simplified search interface
  
  Objekt: DIALOG
  
  
• 10
  Ojala, M.: Commands that RANKle.
  In: Online. 21(1997) no.4, S.70-73.
  
  Abstract: Examines the RANK command on DIALOG using a statistical analysis of articles in DATABASE as an example. The RANK command was used to find authors, company names, and length of articles. Use of the command revealed a number of complexities and revealed some problematic indexing on the part of the database producers. The LEXIS-NEXIS RANK command was also used, but this fulfils a different function to the command of the same name in DIALOG
  
  Themenfeld: Retrievalalgorithmen
  Objekt: LEXIS-NEXIS ; DIALOG
  
  
• 11
  Klingener, A.: DIALOG Web : finally it's arrived.
  In: Online. 21(1997) no.5, S.18-20,22,24.
  
  Abstract: Reviews DIALOG Web which is targeted at those familiar with the traditional DIALOG services. Explains how to navigate through the database directory, use the search interface, viewing and saving results, pricing and redistribution policies, archival rights and enhancing content. Sees few advantages for experienced searchers in using DIALOG Web
  
  Anmerkung: http://dialog.krinfo
  
  Themenfeld: Retrievalsprachen ; Suchoberflächen
  Objekt: DIALOG Web
  
  
• 12
  Klopper, S.M.: Testing, stretching, pushing, and pulling the DIALOG Web.
  In: Online. 21(1997) no.5, S.26-28, 30-32.
  
  Abstract: Reviews DIALOG Web which is targeted at those familiar with the traditional DIALOG services. Details how to access it, pricing, use of DIALINDEX to browse the database and test run search strategies, searching display search results and printing and reporting. Concludes that it is convenient but is has not taken advantage of the possibilities offered by the new medium and has merely replicated a traditional search engine on a new platform
  
  Anmerkung: http://dialog.krinfo
  
  Objekt: DIALOG Web
  
  
• 13
  Wood, A.: Dialog on the Web.
  In: Business information searcher. 7(1997) no.2, S. 4-6.
  
  Abstract: Reviews the online database service Dialog's WWW version. The best way to start searching is via the database listings (DIALINDEX) which uses hyperlinks. Once a database has been selected information about it can be found on Bluesheets. This service will be useful for new users
  
  Themenfeld: Internet
  Objekt: Dialog
  
  
• 14
  Bates, M.E.: Knight-Ridder on the Web : a brave new wolrd for searchers?.
  In: Searcher. 5(1997) no.6, S.28-37.
  
  Abstract: Knight Ridder Information Inc. introduced DIALOG Web in Mar 97. Reviews: connecting the WWW service, searching, formats and output, and downloading. Also reviews DataStar Web (http://dsweb.krinfo.ch), comparing it to DIALOG Web. Cocludes that neither are adequate substitutes to command line searching for professional searchers
  
  Themenfeld: Retrievalsprachen ; Suchoberflächen
  Objekt: Knight-Ridder ; DIALOG ; DataStar
  
  
• 15
  Guenette, D.R.: ¬The CD-ROM-online connection.
  In: CD-ROM professional. 9(1996) no.3, S.30(+12 S.).
  
  Abstract: Rejects the view that the Internet and WWW are likely to render CD-ROM technology obsolete, arguing that CD-ROM and online are complementary, CD-ROMs offer high density, broad bandwidth data storage and access, while online offers narrow bandwidth data access with the capability of up to the minute updating. The fact that many long standing CD-ROM database publishers have an even longer standing in the online environment is contrasted with their slowness to exploit the shared data structures used to produce the databases. Examples cited of CD-ROM and online hybrid systems include: H.W. Wilson's WILSONLINE and WILSONDISC; SilverPlatter's SPIRS and Electronic Reference Library (ERL) technologies; UMI's databases; and Knight Ridder Information's DIALOG and DIALOG OnDisc titles. Predicts a growth in hybrid systems particularly where frequent updates are needed. These hybrids offer publishers the option of reducing the frequency of updating their CD-ROMs yet improving the currency of the services
  
  Objekt: WilsonDisc ; WilsonLine ; SPIRS ; ERL ; DIALOG ; DIALOG OnDisc
  
  
• 16
  Jascó, P.: Who's doing what in the CD-ROM publishing realm?.
  In: Computers in libraries. 16(1996) no.9, S.55-56.
  
  Abstract: Surveys publishing on the WWW, and on CD-ROMs by publishers of professional CD-ROM databases. Covers: OVID, IAC, SilverPlatter, EBSCO, Knight Ridder Information's DIALOG, H.W. Wilson, UMI, OCLC, Bowker, Aries, and NISC. CD-ROM databases publishers are committed to the medium, although they are experimenting with the WWW
  
  Themenfeld: Elektronisches Publizieren ; Intranet
  Objekt: OVID ; IAC ; SilverPlatter ; EBSCO ; DIALOG ; UMI ; KnowledgeFinder ; NISC
  
  
• 17
  Feldman, S.: Testing natural language : comparing DIALOG, TARGET, and DR-LINK.
  In: Online. 20(1996) no.6, S.71-74,76-79.
  
  Abstract: Compares online searching of DIALOG (a traditional Boolean system), TARGET (a relevance ranking system) and DR-LINK (an advanced intelligent text processing system), in order to establish the differing strengths of traditional and natural language processing search systems. Details example search queries used in comparison and how each of the systems performed. Considers the implications of the findings for professional information searchers and end users. Natural language processing systems are useful because they develop an wider understanding of queries that use of traditional systems may not
  
  Themenfeld: Retrievalstudien
  Objekt: DIALOG ; TARGET ; DR-LINK
  
  
• 18
  Tenopir, C. ; Cahn, P.: TARGET & FREESTYLE : DIALOG and Mead join the relevance ranks.
  In: Online. 18(1994) no.3, S.31-47.
  
  Anmerkung: Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.446-456.
  
  Themenfeld: Computerlinguistik
  Objekt: TARGET ; FREESTYLE ; Dialog ; Mead
  Hilfsmittel: FREESTYLE ; TARGET
  
  
• 19
  Valas, G.: Comparison of some widespread CD-ROM information retrieval software packages.
  In: Online and CD-ROM review. 18(1994) no.4, S.211-227.
  
  Abstract: Reports the results of a study, conducted at the National Technical Information Centre and Library (OMIKK), Hungary, to compare 5 popular proprietary CD-ROM searching software packages: OPTIWARE; BRS/Search; ProQuest; SPIRS; and Dialog OnDisc Manager. Software evaluation was based on analysis of a range of CD-ROM bibliographic databases (with the exception of BRS/Search for which the library held no bibliographic databases) and focused on: response times for various activities (logging on, searching, retrieval, display); other performance factors; direct searching features (Boolean operators, proximity operators, arithmetic relations, truncation); index browsing; search strategy handling; display possibilities; output possibilities; and ergonomic and user friendliness factors. No general conclusions are drawn and users are left to draw their own conclusions
  
  Themenfeld: Bibliographische Software
  Objekt: SPIRS ; OPTIWARE ; BRS/SEARCH ; ProQuest ; Dialog OnDisc
  
  
• 20
  Bacig, M.: Where oh where will the World Cup be?.
  In: Online and CD-ROM review. 17(1993) no.2, S.109-111.
  
  Abstract: The first in a series of articles describing the experiences of professionals searching online databases for information on a set topic. Searchers from different countries were given a question to answer, a budget of 5o pounds sterling and a time in which to produce a report. To begin the series, a step by step account is presented of a search for information on the World Cup football event, to take place in the USA in 1994, the likelihood of it being a success and whether there are likely to be any investment opportunities. The value of DIALOG OneSearch for this kind of search is illustrated
  
  Objekt: DIALOG OneSearch