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Ackermann, E.: Piaget's constructivism, Papert's constructionism : what's the difference? (2001)
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- Content
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Zschunke, P.; Svensson, P.: Bücherbrett für alle Fälle : Geräte-Speicher fassen Tausende von Seiten (2000)
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Garrod, P.: Use of the UNESCO Thesaurus for archival subject indexing at UK NDAD (2000)
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Hirons, J.; Hawkins, L.; French, P.: AACR2 and you : revisiting AACR2 to accomodate seriality (2000)
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Kuhlmann, U.; Monnerjahn, P.: Sprache auf Knopfdruck : Sieben automatische Übersetzungsprogramme im Test (2000)
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Boeuf, P. le: ¬The Impact of the FRBR model an the future revisions of the ISBDs : a challenge for the IFLA Section an Cataloging (2002)
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- Date
- 30. 8.2005 9:12:22
-
Suche 3.0 (2009)
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- Date
- 3. 5.1997 8:44:22
- Footnote
- Weitere Artikel auf S.2-3: Berberich, C.: Wie das Netz zwitschert - Beuth, P.: Kurz und fündig - Beuth, P. u. V. Funk: Ein Artikel, der nie fertig wird
-
Schirmbacher, P.: Möglichkeiten und Grenzen des elektronischen Publizierens auf der Basis der Open-Access-Prinzipien (2006)
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- Date
- 27.10.2006 14:21:22
- Source
- Vom Wandel der Wissensorganisation im Informationszeitalter: Festschrift für Walther Umstätter zum 65. Geburtstag, hrsg. von P. Hauke u. K. Umlauf
-
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
-
Schüler, P.: Wertes Wissen : Knowledge Management vermeidet Datenfriedhöfe (2001)
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- Date
- 8.11.2001 19:58:22
