Search (43 results, page 1 of 3)

Grunder, R.: Qualitätskriterien für Datenbanken : Grundsätzliche Überlegungen und Untersuchung ausgewählter Aspekte am Beispiel bibliographischer Online-Datenbanken (1995) 0.04

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Borlund, P.: Evaluation of interactive information retrieval systems (2000) 0.02

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BK: 54.64 / Datenbanken
Classification: 54.64 / Datenbanken

Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.01

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Date: 20.10.2000 12:22:23

Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.01

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Source: Online. 22(1998) no.6, S.57-58

Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.01

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Date: 11. 8.2001 16:22:19

Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.01

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Date: 22. 7.2006 18:43:54

Kaltenborn, K.-F.: Endnutzerrecherchen in der CD-ROM-Datenbank Medline : T.1: Evaluations- und Benutzerforschung über Nutzungscharakteristika, Bewertung der Rechercheergebnisse und künftige Informationsgewinnung; T.2: Evaluations- und Benutzerforschung über Recherchequalität und Nutzer-Computer/Datenbank-Interaktion (1991) 0.01
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Abstract

Die Einführung von CD-ROM Datenbanken als neue Informationstechnologie hat die Formen der Informationsgewinnung in bestimmten wissenschaftlichen Fachgebieten grundlegend geändert. Der Beitrag berichtet über Ergebnisse wissenschaftlicher Begleitforschung bei Endnutzerrecherchen in der CD-ROM-Version der Datenbank MEDLINE. Hierzu wurden drei verschiedene Erhebungen durchgeführt. Hiernach ist die überwiegende Zahl der Endnutzer (89,3%) mit dem jeweiligen Rechercheresultat zufrieden, wobei Benutzer mit geringer Rechercheerfahrung eine höhere Zufriedenheitsrate erreichen als Benutzer mit umfangreicheren Recherchekenntnissen. Die Gründe zur Nutzung von CD-ROM-Systemen resultieren voriwegend aus der klinischen Alltagsroutine oder täglichen Forschungspraxis, während vermittelte Online-Literatursuchen tendenziell häufiger im Zusammenhang mit einmaligen Ereignissen der wissenschaftlichen Aus- und Weiterbildung stehen. Die selbständige CD-ROM Literaturrecherche stellt für die befragten Ärzte und Wissenschaftler die bevorzugte Methode der Informationsgewinnung dar. Die analysierten Endnutzerrecherchen weisen allerdings Fehler und Defizite hinsichtlich einer optimalen Suchstrategie auf, die zu unbemerktn Informationsverlusten und zu Fehlbeurteilungen des wissenschaftlichen Kenntnisstandes führen
Mielke, B.: Wider einige gängige Ansichten zur juristischen Informationserschließung (2002) 0.01
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Abstract

Ausgehend von einer Betrachtung in der Rechtsinformatik geläufiger Annahmen zur juristischen Informationserschließung beschreibt der Beitrag wesentliche Ergebnisse einer empirischen Studie der Retrievaleffektivität von Re-cherchen in juristischen Datenbanken. Dabei steht die Frage nach der Notwendigkeit einer intellektuellen Erschließung einerseits, der Effektivität der sogenannten Stichwortsuche andererseits im Mittelpunkt. Die Ergebnisse der Studie, bei der auch ein Vergleich zwischen einem Informationssystem auf der Basis eines Booleschen Retrievalmodells mit einem System auf der Basis statistischer Verfahren vorgenommen wurde, legen den Schluss nahe, dass in der rechtsinformatischen Fachliteratur analytisch begründete Annahmen wie die Gefahr zu großer Antwortmengen bei der Stichwortsuche empirisch nicht zu belegen sind. Auch zeigt sich keine Überlegenheit intellektueller Erschließungsverfahren (Beschlagwortung) gegenüber der automatischen Indexierung, im Gegenteil führt der Einsatz eines statistischen Verfahrens bei identischer Dokumentkollektion zu einer höheren Wiedergewinnungsrate (recall).

Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.01

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Date: 27. 2.1999 20:55:22

Ng, K.B.; Loewenstern, D.; Basu, C.; Hirsh, H.; Kantor, P.B.: Data fusion of machine-learning methods for the TREC5 routing tak (and other work) (1997) 0.01

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Date: 27. 2.1999 20:59:22

Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.01

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Pages: S.22-25

Park, S.: Usability, user preferences, effectiveness, and user behaviors when searching individual and integrated full-text databases : implications for digital libraries (2000) 0.01

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Theme: Verteilte bibliographische Datenbanken

Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01

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Date: 19. 3.1996 11:22:12

Sanderson, M.: ¬The Reuters test collection (1996) 0.01

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Source: Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon

Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.01

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Date: 1. 8.1996 22:01:00

¬The Fifth Text Retrieval Conference (TREC-5) (1997) 0.01

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Abstract: Proceedings of the 5th TREC-confrerence held in Gaithersburgh, Maryland, Nov 20-22, 1996. Aim of the conference was discussion on retrieval techniques for large test collections. Different research groups used different techniques, such as automated thesauri, term weighting, natural language techniques, relevance feedback and advanced pattern matching, for information retrieval from the same large database. This procedure makes it possible to compare the results. The proceedings include papers, tables of the system results, and brief system descriptions including timing and storage information

Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998) 0.01

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Source: Online. 22(1998) no.3, S.24-26,28

Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.01

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Abstract: Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht

Ellis, D.: Progress and problems in information retrieval (1996) 0.01

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Date: 26. 7.2002 20:22:46

¬The Eleventh Text Retrieval Conference, TREC 2002 (2003) 0.01

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Abstract: Proceedings of the llth TREC-conference held in Gaithersburg, Maryland (USA), November 19-22, 2002. Aim of the conference was discussion an retrieval and related information-seeking tasks for large test collection. 93 research groups used different techniques, for information retrieval from the same large database. This procedure makes it possible to compare the results. The tasks are: Cross-language searching, filtering, interactive searching, searching for novelty, question answering, searching for video shots, and Web searching.

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