-
Rostaing, H.; Barts, N.; Léveillé, V.: Bibliometrics: representation instrument of the multidisciplinary positioning of a scientific area : Implementation for an Advisory Scientific Committee (2007)
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- Date
- 30.12.2007 11:22:39
- Source
- ¬La interdisciplinariedad y la transdisciplinariedad en la organización del conocimiento científico : actas del VIII Congreso ISKO-España, León, 18, 19 y 20 de Abril de 2007 : Interdisciplinarity and transdisciplinarity in the organization of scientific knowledge. Ed.: B. Rodriguez Bravo u. M.L Alvite Diez
-
Kokiopoulou, E.; Saad, Y.: Polynomial filtering in Latent semantic indexing for information retrieval (2004)
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- Source
- SIGIR'04: Proceedings of the 27th Annual International ACM-SIGIR Conference an Research and Development in Information Retrieval. Ed.: K. Järvelin, u.a
-
Fan, J.; Gao, Y.; Luo, H.; Xu, G.: Automatic image automation by using concept-sensitive salient objects for image content representation (2004)
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- SIGIR'04: Proceedings of the 27th Annual International ACM-SIGIR Conference an Research and Development in Information Retrieval. Ed.: K. Järvelin, u.a
-
Shen, D.; Chen, Z.; Yang, Q.; Zeng, H.J.; Zhang, B.; Lu, Y.; Ma, W.Y.: Web page classification through summarization (2004)
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- Source
- SIGIR'04: Proceedings of the 27th Annual International ACM-SIGIR Conference an Research and Development in Information Retrieval. Ed.: K. Järvelin, u.a
-
Denda, K.: Beyond subject headings : a structured information retrieval tool for interdisciplinary fields (2005)
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- Date
- 10. 9.2000 17:38:22
-
Kornwachs, K.: Wissen wir, was wir wissen werden? (2000)
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- Date
- 28. 7.2001 20:22:18
-
Boyack, K.W.; Wylie,B.N.; Davidson, G.S.: Information Visualization, Human-Computer Interaction, and Cognitive Psychology : Domain Visualizations (2002)
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- Date
- 22. 2.2003 17:25:39
22. 2.2003 18:17:40
- Source
- Visual Interfaces to Digital Libraries. Eds.: Börner, K. u. C. Chen
-
Bonte, A.: Convenience-Dienste in Bibliotheken - ein Irrweg? : Eine Erwiderung auf Klaus Franken (2000)
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- Date
- 22. 1.2000 17:56:23
- Footnote
- Bezugnahme auf den Beitrag von K. Franken in: Bibliotheksdienst. 33(1999) H.11, S.1848-1856.
-
Beck, K.: Zur Bildungsfunktion computervermittelter Kommunikation (2001)
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- Date
- 3.10.2001 15:40:22
-
Carey, K.; Stringer, R.: ¬The power of nine : a preliminary investigation into navigation strategies for the new library with special reference to disabled people (2000)
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- Pages
- 22 S
-
Sandner, M.; Jahns, Y.: Kurzbericht zum DDC-Übersetzer- und Anwendertreffen bei der IFLA-Konferenz 2005 in Oslo, Norwegen (2005)
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- Content
- "Am 16. August 2005 fand in Oslo im Rahmen der heurigen IFLA-Konferenz das alljährliche Treffen der DDC-Übersetzer und der weltweiten DeweyAnwender-Institutionen (Nationalbibliotheken, Ersteller von Nationalbibliografien) statt. Die im Sommer 2005 bereits abgeschlossene deutsche Übersetzung wird in der Druckfassung Ende des Jahres in 4 Bänden vorliegen, beim K. G. Saur Verlag in München erscheinen (ISBN 3-598-11651-9) und 2006 vom ebenfalls erstmals ins Deutsche übersetzten DDC-Lehrbuch (ISBN 3-598-11748-5) begleitet. Pläne für neu startende Übersetzungen der DDC 22 gibt es für folgende Sprachen: Arabisch (mit der wachsenden Notwendigkeit, Klasse 200 Religion zu revidieren), Französisch (es erschien zuletzt eine neue Kurzausgabe 14, nun werden eine vierbändige Druckausgabe und eine frz. Webversion anvisiert), Schwedisch, Vietnamesisch (hierfür wird eine an die Sprache und Schrift angepasste Version des deutschen Übersetzungstools zum Einsatz kommen).
Allgemein DDC 22 ist im Gegensatz zu den früheren Neuauflagen der Standard Edition eine Ausgabe ohne generelle Überarbeitung einer gesamten Klasse. Sie enthält jedoch zahlreiche Änderungen und Expansionen in fast allen Disziplinen und in vielen Hilfstafeln. Es erschien auch eine Sonderausgabe der Klasse 200, Religion. In der aktuellen Kurzausgabe der DDC 22 (14, aus 2004) sind all diese Neuerungen berücksichtigt. Auch die elektronische Version exisitiert in einer vollständigen (WebDewey) und in einer KurzVariante (Abridged WebDewey) und ist immer auf dem jüngsten Stand der Klassifikation. Ein Tutorial für die Nutzung von WebDewey steht unter www.oclc.org /dewey/ resourcesitutorial zur Verfügung. Der Index enthält in dieser elektronischen Fassung weit mehr zusammengesetzte Notationen und verbale Sucheinstiege (resultierend aus den Titeldaten des "WorldCat") als die Druckausgabe, sowie Mappings zu den aktuellsten Normdatensätzen aus LCSH und McSH. Aktuell Die personelle Zusammensetzung des EPC (Editorial Policy Committee) hat sich im letzten Jahr verändert. Dieses oberste Gremium der DDC hat Prioritäten für den aktuellen Arbeitsplan festgelegt. Es wurde vereinbart, größere Änderungsvorhaben via Dewey-Website künftig wie in einem Stellungnahmeverfahren zur fachlichen Diskussion zu stellen. www.oclc.org/dewey/discussion/."
-
Horikoshi, K.; Sugita, S.; Nonaka, Y.; Kamiya, S.; Sugita, I.; Asoshina, H.: junii2 and AIRway : an application profile for scholarly works and its application for link resolvers (2008)
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- Source
- Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
-
Chung, Y.-M.; Noh, Y.-H.: Developing a specialized directory system by automatically classifying Web documents (2003)
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- Abstract
- This study developed a specialized directory system using an automatic classification technique. Economics was selected as the subject field for the classification experiments with Web documents. The classification scheme of the directory follows the DDC, and subject terms representing each class number or subject category were selected from the DDC table to construct a representative term dictionary. In collecting and classifying the Web documents, various strategies were tested in order to find the optimal thresholds. In the classification experiments, Web documents in economics were classified into a total of 757 hierarchical subject categories built from the DDC scheme. The first and second experiments using the representative term dictionary resulted in relatively high precision ratios of 77 and 60%, respectively. The third experiment employing a machine learning-based k-nearest neighbours (kNN) classifier in a closed experimental setting achieved a precision ratio of 96%. This implies that it is possible to enhance the classification performance by applying a hybrid method combining a dictionary-based technique and a kNN classifier
-
SIGIR'04 : Proceedings of the 27th Annual International ACM-SIGIR Conference an Research and Development in Information Retrieval (2004)
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- Content
- Enthält u.a. die Beiträge: Liu, S., F. Liu u. C. Yu u.a.: An effective approach to document retrieval via utilizing WordNet and recognizing phrases; Lau, R.Y.K., P.D. Bruza u. D. Song: Belief revision for adaptive information retrieval; Kokiopoulou, E., Y. Saad: Polynomial filtering in Latent semantic indexing for information retrieval; He, X., D. Cai u. H. Liu u.a.: Locality preserving indexing for document representation; Tang, C., S. Dwarkadas u. Z. Xu u.a.: On scaling Latent semantic indexing for large peer-to peer systems; Yu, W., Y. Gong: Document clustering by concept factorization; Kazai, G., M. Lalmas: The overlap problem in content-oriented XML retrieval evaluation; Kamps, J., M. de Rijke u. B. Sigurbjörnsson: Length normalization in XML retrieval; Liu, A., Q. Zou u. W.W. Chu: Configurable indexing and ranking for XML information retrieval; Zhang, L., Y. Pan u. T. Zhang: Focused named entity recognition using machine learning; Xu, J., R. Weischedel u. A. Licuanan: Evaluation of an extraction-based approach to answering definitional questions; Chieu, H.L., Y.K. Lee: Query based event extraction along a timeline; Yu, K., V. Tresp u. S. Yu: A nonparametric hierarchical Bayesian framework for information filtering; Liu, X., W.B. Croft: Cluster-based retrieval using language models; Silvestri, F., A. Orlando u. R. Perego: Assigning identifters to documents to enhance the clustering property of fulltext indexes; Amitay, E., D. Carmel u. R. Lempel u.a.: Scaling IR-system evaluation using Term Relevance Sets; Buckley, C., E.M. Voorhees: Retrieval evaluation with incomplete information; Cheng, P.J., J.W. Teng u. R.C. Chen u.a.: Translating unknown queries with Web corpora for cross-language information languages; Fan, J., Y. Gao u. H. Luo u.a.: Automatic image automation by using concept-sensitive salient objects for image content representation; Amitay, E., N. Har'El u. R. Sivian u.a.: Web-a-Where: geotagging web content; Shen, D., Z. Chen u. Q. Yang u.a.: Web page classification through summarization; McLaughlin, M.R., J.L. Herlocker: A collaborative filtering algorithm and evaluation metric that accurately model the user experience; Fan, W., M. Luo u. L. Wang u.a.: Tuning before feedback: combining ranking discovery and blind feedback for robust retrieval.
- Editor
- Järvelin, K. u.a.
-
Kuo, J.-S.; Li, H.; Yang, Y.-K.: Active learning for constructing transliteration lexicons from the Web (2008)
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-
Toutanova, K.; Klein, D.; Manning, C.D.; Singer, Y.: Feature-rich Part-of-Speech Tagging with a cyclic dependency network (2003)
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-
Breyer, K.: Kommerz statt Information (2002)
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- Date
- 9. 5.2002 21:21:22
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Elovici, Y.; Shapira, Y.B.; Kantor, P.B.: ¬A decision theoretic approach to combining information filters : an analytical and empirical evaluation. (2006)
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- Date
- 22. 7.2006 15:05:39
-
Yoon, Y.; Lee, C.; Lee, G.G.: ¬An effective procedure for constructing a hierarchical text classification system (2006)
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- Date
- 22. 7.2006 16:24:52
-
Zhang, Y.; Xu, W.: Fast exact maximum likelihood estimation for mixture of language model (2008)
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- Abstract
- Language modeling is an effective and theoretically attractive probabilistic framework for text information retrieval. The basic idea of this approach is to estimate a language model of a given document (or document set), and then do retrieval or classification based on this model. A common language modeling approach assumes the data D is generated from a mixture of several language models. The core problem is to find the maximum likelihood estimation of one language model mixture, given the fixed mixture weights and the other language model mixture. The EM algorithm is usually used to find the solution. In this paper, we proof that an exact maximum likelihood estimation of the unknown mixture component exists and can be calculated using the new algorithm we proposed. We further improve the algorithm and provide an efficient algorithm of O(k) complexity to find the exact solution, where k is the number of words occurring at least once in data D. Furthermore, we proof the probabilities of many words are exactly zeros, and the MLE estimation is implemented as a feature selection technique explicitly.
