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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Page: 1 2 Hits 21 – 39 of 39 21 A PROMISE for Experimental Evaluation ... Petras, Vivien; Braschler, Martin; Choukri, Kahlid. - : Humboldt-Universität zu Berlin, 2010 BASE Show details 22 The Challenge of Multilinguality in Europeana ... Dini, Luca; Petras, Vivien. - : Humboldt-Universität zu Berlin, 2010 BASE Show details 23 A PROMISE for Experimental Evaluation Petras, Vivien; Braschler, Martin; Choukri, Kahlid. - : Humboldt-Universität zu Berlin, 2010 BASE Show details 24 The Challenge of Multilinguality in Europeana Dini, Luca; Petras, Vivien. - : Humboldt-Universität zu Berlin, 2010 BASE Show details 25 Evaluating Systems for Multilingual and Multimodal Information Access : 9th Workshop of the Cross-Language Evaluation Forum, CLEF 2008, Aarhus, Denmark, September 17-19, 2008, Revised Selected Papers Deselaers, Thomas; Ferro, Nicola; Gonzalo, Julio. - Berlin, Heidelberg : Springer Berlin Heidelberg, 2009 UB Frankfurt Linguistik Show details 26 The Domain-Specific Track at CLEF 2008 ... Petras, Vivien; Baerisch, Stefan. - : Humboldt-Universität zu Berlin, 2009 BASE Show details 27 The Domain-Specific Track at CLEF 2008 Petras, Vivien; Baerisch, Stefan. - : Humboldt-Universität zu Berlin, 2009 BASE Show details 28 Advances in Multilingual and Multimodal Information Retrieval : 8th Workshop of the Cross-Language Evaluation Forum, CLEF 2007, Budapest, Hungary, September 19-21, 2007, Revised Selected Papers Jijkoun, Valentin; Mandl, Thomas; Müller, Henning. - Berlin, Heidelberg : Springer Berlin Heidelberg, 2008 UB Frankfurt Linguistik Show details 29 Domain-Specific CLIR of English, German and Russian Using Fusion and Subject Metadata for Query Expansion ... Petras, Vivien; Gey, Fredric; Larson, Ray R.. - : Humboldt-Universität zu Berlin, 2006 BASE Show details 30 Berkeley at GeoCLEF ... Larson, Ray R.; Gey, Fredric C.; Petras, Vivien. - : Humboldt-Universität zu Berlin, 2006 Abstract: In this paper we will describe the Berkeley (groups 1 and 2 combined) submissions and approaches to the GeoCLEF task for CLEF 2005. The two Berkeley groups used different systems and approaches for GeoCLEF with some common themes. For Berkeley group 1 (Larson) the main technique used was fusion of multiple probabilistic searches against different XML components using both Logistic Regression (LR) algorithms and a version of the Okapi BM-25 algorithm. The Berkeley group 2 (Gey and Petras) employed tested CLIR methods from previous CLEF evaluations using Logistic Regression with Blind Feedback. Both groups used multiple translations of queries in for cross-language searching, and the primary geographically-based approaches taken by both involved query expansion with additional place names. The Berkeley1 group used GIR indexing techniques to georeference proper nouns in the text using a gazetteer derived from the World Gazetteer (with both English and German names for each place), and automatically expanded ... Keyword: 020 Bibliotheks- und Informationswissenschaften URL: https://edoc.hu-berlin.de/handle/18452/21178 https://dx.doi.org/10.18452/19967 BASE Hide details 31 Berkeley at GeoCLEF Larson, Ray R.; Gey, Fredric C.; Petras, Vivien. - : Humboldt-Universität zu Berlin, 2006 BASE Show details 32 Domain-Specific CLIR of English, German and Russian Using Fusion and Subject Metadata for Query Expansion Petras, Vivien; Gey, Fredric; Larson, Ray R.. - : Humboldt-Universität zu Berlin, 2006 BASE Show details 33 UC Berkeley at CLEF-2003 ... Petras, Vivien; Perelman, Natalia; Gey, Fredric. - : Humboldt-Universität zu Berlin, 2004 BASE Show details 34 UC Berkeley at CLEF-2003 Petras, Vivien; Perelman, Natalia; Gey, Fredric. - : Humboldt-Universität zu Berlin, 2004 BASE Show details 35 Using Thesauri in Cross-Language Retrieval of German and French Indexed Collections ... Petras, Vivien; Perelman, Natalia; Gey, Fredric C.. - : Humboldt-Universität zu Berlin, 2003 BASE Show details 36 Using Thesauri in Cross-Language Retrieval of German and French Indexed Collections Petras, Vivien; Perelman, Natalia; Gey, Fredric C.. - : Humboldt-Universität zu Berlin, 2003 BASE Show details 37 Cross-Language Retrieval for the CLEF Collections ... Gey, Fredric C.; Jiang, Hailing; Petras, Vivien. - : Humboldt-Universität zu Berlin, 2001 BASE Show details 38 Cross-Language Retrieval for the CLEF Collections Gey, Fredric; Jiang, Hailing; Petras, Vivien. - : Humboldt-Universität zu Berlin, 2001 BASE Show details 39 Citizen Science in der Bibliotheksarbeit - Möglichkeiten und Chancen : Innovationspreis 2017 Petras, Vivien (AkademischeR BetreuerIn); Bunge, Eva (VerfasserIn) IDS Mannheim Show details Page: 1 2

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