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Egghe, L.: ¬A universal method of information retrieval evaluation : the "missing" link M and the universal IR surface (2004)
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- Abstract
- The paper shows that the present evaluation methods in information retrieval (basically recall R and precision P and in some cases fallout F ) lack universal comparability in the sense that their values depend on the generality of the IR problem. A solution is given by using all "parts" of the database, including the non-relevant documents and also the not-retrieved documents. It turns out that the solution is given by introducing the measure M being the fraction of the not-retrieved documents that are relevant (hence the "miss" measure). We prove that - independent of the IR problem or of the IR action - the quadruple (P,R,F,M) belongs to a universal IR surface, being the same for all IR-activities. This universality is then exploited by defining a new measure for evaluation in IR allowing for unbiased comparisons of all IR results. We also show that only using one, two or even three measures from the set {P,R,F,M} necessary leads to evaluation measures that are non-universal and hence not capable of comparing different IR situations.
- Date
- 14. 8.2004 19:17:22
-
Gardner, T.; Iannella, R.: Architecture and software solutions (2000)
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- Date
- 22. 6.2002 19:38:24
-
Vorhauer, H.; Wittauer, R.: Praktische Erfahrungen von Knowledge Base mit Lotus Notes in der Pharmamarktforschung (2000)
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- Date
- 22. 7.2000 17:46:28
-
Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001)
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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
-
Hammwöhner, R.: Anmerkungen zur Grundlegung der Informationsethik (2006)
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- Date
- 13.10.2006 10:22:03
-
Park, J.-r.: Cross-lingual name and subject access : mechanisms and challenge (2007)
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- Date
- 10. 9.2000 17:38:22
-
Siegmüller, R.: FINT! - der Weg zu einer länderübergreifenden Kooperation der Fachhochschulbibliotheken in Nordrhein-Westfalen und Bayern (2001)
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- Date
- 22. 3.2008 13:48:16
-
Gradmann, S.; Hol, R.; Wesseling, M.G.: Auf dem Weg zum "Semantic Web" : Perspektiven der Verbundarbeit aus der Sicht von Pica (2001)
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- Date
- 22. 3.2008 13:53:45
-
Camden, B.P.B.; Intner, S.S.; Hill, J.S.; Reynolds, R.R.; Garrison, W.A.: Reflections on cataloging leadership (2008)
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- Abstract
- Four Association for Library Collections & Technical Services leaders (Sheila S. Intner, Janet Swan Hill, Regina R. Reynolds, and William A. Garrison) reflect on their careers and offer insights in their paths to leadership positions in the professional and in the Association. A brief introduction by Beth Picknally Camden, program moderator, introduces the papers.
- Date
- 10. 9.2000 17:38:22
-
Schneider, R.: OPACs, Benutzer und das Web (2009)
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- Date
- 22. 2.2009 18:50:43
-
Klassen, R.; Kübler, H.-D.: Strukturwandel des wissenschaftlichen Publikationsmarktes : Perspektiven und Aufgaben für die Forschung (2009)
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- Date
- 22. 7.2009 13:09:48
-
Grunder, R.: Datenbankqualität im Kontext bibliothekarischer Dienstleistungen (2002)
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- Date
- 27. 6.2003 9:22:16
- Source
- ABI-Technik. 22(2002) H.3, S.220-247
-
Yee, R.; Beaubien, R.: ¬A preliminary crosswalk from METS to IMS content packaging (2004)
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- Source
- Library hi tech. 22(2004) no.1, S.69-81
-
Lamb, R.; King, J.L.; Kling, R.: Informational environments : organizational contexts of online information use (2003)
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- Date
- 5. 7.2006 18:43:22
-
Schmidt, R.: Wege des Knowledge Managements : Themen und Vorträge der Online-Tagung 2000 (2000)
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- Abstract
- Neue Trends im Knowlegde Management und die sich daruas ergebenden Konsequenzen für die Zukunft der professionellen Informationsarbeit werden in Fachbeiträgen und Diskussionen auf der 22. Online-Tagung der DGI thematisiert. Der Artikel bietet einen Überblick zu Struktur und Zielsetzung des Tagungskonzepts und fasst die Inhalte der Vorträge zusammen. Dabei reicht das Spektrum der Themen von ersten Erfahrungen mit der praktischen Anwendung von Wissensmanagement über neue Erkenntnisse zur global organisierten Informationsarbeit und zur Reorganisation von Wissensstrukturen im Internet und Intranet bis zu Prognosen und Einschätzungen zu zukünftigen Veränderungen auf dem Arbeitsmarkt für Informationsspezialisten
-
Heery, R.: Information gateways : collaboration and content (2000)
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- Date
- 22. 6.2002 19:38:54
-
Goldschmidt, R.: Mehrwertdienste für den Zugang zur globalen Information : Optimierung der Benutzerversorgung. Bericht von der Bielefeld 2000 Conference, 8.-10.2.2000 (2000)
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- Abstract
- Zum nunmehr fünften Mal veranstaltete die Bibliothek der Universität Bielefeld gemeinsam mit dem British Council Köln und der Buchhändler-Vereinigung GmbH Frankfurt an Main das internationale Spitzentreffen von Verlegern, Bibliothekaren und Agenturen. An den Vorträgen und Diskussionen nahmen in diesem Jahr weit über 500 Teilnehmer aus 22 Ländern teil. Mehr als 30 Aussteller präsentierten sich mit Ständen im vorraum der Stadthalle sowie mit Vorführungen und Firmenvorträgen. Ziel der Veranstalter war es auch dieses Mal, Verlegern, Händlern und Bibliothekaren ein Forum für nationale und internationale Kooperation bei der elektronischen Vermittlung von Fachinformation zu bieten
-
Levinson, R.: Symmetry and the computation of conceptual structures (2000)
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- Date
- 3. 9.2000 19:22:45
-
Sireteanu, R.: "Dumpfes Sehen" verändert das Gehirn (2000)
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- Source
- Max Planck Forschung. 2000, H.1, S.22-25
-
Dextre Clarke, S.G.: Thesaural relationships (2001)
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- Date
- 22. 9.2007 15:45:57
- Source
- Relationships in the organization of knowledge. Eds.: Bean, C.A. u. R. Green
