Search (4414 results, page 2 of 221)

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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

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Abstract

The approach to information systems actability emphasizes the social action character of information systems and its social context. It aims at a pragmatically and social sensitive approach to information systems. This paper extends the scope and focus of this approach by suggesting a research framework called universal actability. The research framework advocates for an integral understanding of universal usability, human communication and action competence, and information systems actability. To pursue this research objective, this paper focuses on the following aspects: It provides a critical review of the concepts of the previous research on information systems actability and suggests some extensions and revisions towards universal actability. In addition, it discusses several maxims for (intercultural) communications and their implications for the actors and systems. Finally, it reflects on the applicability of user modeling technology for modeling diversity in order to enhance actor's and system's actability across diverse contexts.

Date

22. 6.2007 13:31:31

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Object

Roche-Lexikon

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Content

Vgl.: http%3A%2F%2Fcreativechoice.org%2Fdoc%2FHansJonas.pdf&usg=AOvVaw1TM3teaYKgABL5H9yoIifA&opi=89978449.

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Content

1. Agrarwissenschaften 1981. - 3. Allgemeine Geographie 2.1972. - 3a. Allgemeine Naturwissenschaften 1.1973. - 4. Allgemeine Sprachwissenschaft, Allgemeine Literaturwissenschaft 2.1971. - 6. Allgemeines. 5.1983. - 7. Anglistik 3.1976. - 8. Astronomie, Geodäsie 4.1977. - 12. bio Biologie, bcp Biochemie-Biophysik, bot Botanik, zoo Zoologie 1981. - 13. Bremensien 3.1983. - 13a. Buch- und Bibliothekswesen 3.1975. - 14. Chemie 4.1977. - 14a. Elektrotechnik 1974. - 15 Ethnologie 2.1976. - 16,1. Geowissenschaften. Sachteil 3.1977. - 16,2. Geowissenschaften. Regionaler Teil 3.1977. - 17. Germanistik 6.1984. - 17a,1. Geschichte. Teilsystematik hil. - 17a,2. Geschichte. Teilsystematik his Neuere Geschichte. - 17a,3. Geschichte. Teilsystematik hit Neueste Geschichte. - 18. Humanbiologie 2.1983. - 19. Ingenieurwissenschaften 1974. - 20. siehe 14a. - 21. klassische Philologie 3.1977. - 22. Klinische Medizin 1975. - 23. Kunstgeschichte 2.1971. - 24. Kybernetik. 2.1975. - 25. Mathematik 3.1974. - 26. Medizin 1976. - 26a. Militärwissenschaft 1985. - 27. Musikwissenschaft 1978. - 27a. Noten 2.1974. - 28. Ozeanographie 3.1977. -29. Pädagogik 8.1985. - 30. Philosphie 3.1974. - 31. Physik 3.1974. - 33. Politik, Politische Wissenschaft, Sozialwissenschaft. Soziologie. Länderschlüssel. Register 1981. - 34. Psychologie 2.1972. - 35. Publizistik und Kommunikationswissenschaft 1985. - 36. Rechtswissenschaften 1986. - 37. Regionale Geograpgie 3.1975. - 37a. Religionswissenschaft 1970. - 38. Romanistik 3.1976. - 39. Skandinavistik 4.1985. - 40. Slavistik 1977. - 40a. Sonstige Sprachen und Literaturen 1973. - 43. Sport 4.1983. - 44. Theaterwissenschaft 1985. - 45. Theologie 2.1976. - 45a. Ur- und Frühgeschichte, Archäologie 1970. - 47. Volkskunde 1976. - 47a. Wirtschaftswissenschaften 1971 // Schlüssel: 1. Länderschlüssel 1971. - 2. Formenschlüssel (Kurzform) 1974. - 3. Personenschlüssel Literatur 5. Fassung 1968

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Source

CD-Info. 2002, H.1, S.22

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Editor

Lexikon-Institut der Bertelsmann Lexikon Verlag GmbH

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Object

Große Bertelsmann Lexikon 2000
Große Lexikon 2000 (Data Becker)
Kosmos Kompakt Lexikon 2000

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Abstract

Universallexikon mit Videos, Fotos, Animationen, Musik und mehr; CD 1: Lexikon-CD; CD 2: VideoPlus-Bonus-CD

Content

Über 50.000 Stichwörter; über 90 Min Videos; 2.200 Fotos, Diagramme, Grafiken und Zeichnungen; 90 Min. Musik, Tierstimmen, Redewendungen; Lexikon-Quiz mit 400 Fragen

Object

Große Data Becker Lexikon

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Content

Erst Multimedia macht ein Lexikon zum Genuss. Nicht blanke Texte, sondern Bilder, Ton und Animation vermitteln modernes Wissen

Object

Große Bertelsmann Lexikon 2002
Große Lexikon 2002
Große Lexikon des Wissens

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Object

Bertelsmann neues Lexikon
dtv-Lexikon

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Große Data Becker Lexikon

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Abstract

Describes the history and origins of the International Institute of Bibliography, founded in 1895 and which later became the FID. Outlines the work of Paul Otlet and his colleagues in developing the idea of universal bibliographic control through the Répertoire Bibliographique Universel and the emergence of the Universal Decimal Classification (UDC) as the means of its classifies arrangement. Stresses the key role played by this work in developing the main concepts of information science and documentation

Source

International forum on information and documentation. 22(1997) no.2, S.3-15

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Source

http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0CDQQFjAE&url=http%3A%2F%2Fdigbib.ubka.uni-karlsruhe.de%2Fvolltexte%2Fdocuments%2F3131107&ei=HzFWVYvGMsiNsgGTyoFI&usg=AFQjCNE2FHUeR9oQTQlNC4TPedv4Mo3DaQ&sig2=Rlzpr7a3BLZZkqZCXXN_IA&bvm=bv.93564037,d.bGg&cad=rja

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Content

"Der Musiker und Produzent Dieter Bohlen wurde als Dieter Günther Bohlen am 7. Februar 1954 in Oldenburg geboren. Die Ruine Steinschloss ist die höchstgelegene Burg-Ruine in der österreichischen Steiermark. Dieses und anderes Wissen bietet die Online-Enzyklopädie www.wikipedia.de. Das besondere daran: Die mehr als 100.000 deutschsprachigen Artikel stammen nicht aus einer Lexikon-Redaktion. Denn jeder kann bei Wikipedia mitarbeiten. Tausende Autoren schreiben und recherchieren an der Wissensdatenbank - ohne Lohn und mit dem Ziel, irgendwann einmal mit dem Brockhaus konkurrieren zu können. Dabei sind die Texte mit Quellenangabe frei verfügbar. Knapp 500 Artikel kommen nach Angaben des Projektsprechers Arne Klempert täglich neu hinzu. "Die Qualität ist dabei sehr unterschiedlich, sagt Klempert. Manchmal handelt es sich um Einzeiler, die gerade noch so als Artikel durchgehen." Andererseits gebe es aber auch eine Reihe exzellenter Beiträge. - Jeder kann jeden Text verbessern - Die Wikipedianer, so nennen sich die Aktiven bei Wikipedia selbst, verfahren mit den Texten anarchisch: Jeder kann jeden Text verbessern, Passagen hinzufügen oder löschen. Da ist Vandalismus Tür und Tor geöffnet, möchte man meinen. Doch die Störer verlieren bei der Online-Enzyklopädie schnell die Lust, sagt Klempert. Alle Versionen eines Artikels sind jederzeit abrufbar, nichts geht für immer verloren. Rund 4000 registrierte und ungezählte nicht-registrierte Autoren hüten den Wissensschatz Wikipedia und stellen ihre eigenen Kenntnisse zur Verfügung, um das Lexikon weiterzuentwickeln. Viele haben Spaß daran, ihr Wissen zu teilen und durch die Verbesserungen der anderen Autoren lernt man selbst wieder etwas dazu", beschreibt Klempert das Motiv, ein Wikipedianer zu sein. Die Idee zu Wikipedia hatte der US-Amerikaner Jimmy Wales. Im Januar 2001 startete zunächst eine englischsprachige Version der Online-Enzyklopädie, bereits im Mai des gleichen Jahres entstand die deutsche Ausgabe. Unterdessen List die Online-Enzyklopädie in rund 80 Sprachen verfügbar, darunter Esperanto und Plattdeutsch. Die englische Version ist derzeit die größte, gefolgt von der deutschen Wikipedia. Die Serverfarm in Florida wird von Wales' Stiftung Wikimedia getragen. Der Brockhaus-Verlag, der im kommenden Jahr 200 Jahre alt wird, sieht die Konkurrenz aus dem Internet gelassen. Brockhaus-Sprecher Klaus Holoch glaubt nicht, dass Wikipedia einmal den Brockhaus ersetzen kann. "Die Brockhaus-Enzyklopädie bietet geprüftes Wissen, auf das man sich hundertprozentig verlassen kann.""

Date

3. 5.1997 8:44:22
22. 8.2004 10:07:39

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Content

Enthält die Lehreinheiten: LE1: Kriterien zur Beurteilung von Allgemeinenzyklopädien - LE2: Meyers Enzyklopädisches Lexikon - LE3: Meyers Enzyklopädisches Lexikon, Jahrbuch - LE4: Brockhaus Enzyklopädie - LE5: Das neue Fische Lexikon in Farbe - LE6-7: New Encyclopaedia Britannica - LE8: Britannica Book of the Year - LE9: La Grande Encyclopédie (Larousse) - LE10: Great Soviet Encyclopaedia

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Abstract

Ein digitales Lexikon ist dem gedruckten Pendant in vielen Punkten überlegen. Welches elektronische Nachschlagewerk Bildungslücken amg ründlichsten auffüllt, hat CHIP in einem Vergleichstest ausgelotet

Object

Große Data Becker Lexikon
Mein erstes Lexikon

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Content

Der Spaß darf nicht zu kurz kommen. Das digitale Lexikon des modernen Performers ist gefüllt mit Filmen aus der Tagesschau, Vogelstimmen, technischen Animationen und interaktiven Landkarten

Object

Große Lexikon 2003 (Data Becker)
Wissen.de Lexikon 2003 (Bertelsmann)

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Imprint

Gütersloh : Bertelsmann-Lexikon-Verlag

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Editor

Lexikon-Redaktion des Verlages F.A. Brockhaus