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

Verlag

Springer-Verlag GmbH

Erscheinungsjahr

2009

Sprache

Englisch

ISBN-10

3642044468

ISBN-13

9783642044465

Einband

Softcover

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Sehr gut

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Inhaltsangabe

What Happened in CLEF 2008.- What Happened in CLEF 2008.- I: Multilingual Textual Document Retrieval (Ad Hoc).- CLEF 2008: Ad Hoc Track Overview.- TEL@CLEF.- Logistic Regression for Metadata: Cheshire Takes on Adhoc-TEL.- Query Expansion via Library Classification System.- Experiments on a Multinomial Language Model versus Lucene’s Off-the-Shelf Ranking Scheme and Rocchio Query Expansion (TEL@CLEF Monolingual Task).- WikiTranslate: Query Translation for Cross-Lingual Information Retrieval Using Only Wikipedia.- UFRGS@CLEF2008: Using Association Rules for Cross-Language Information Retrieval.- CLEF 2008 Ad-Hoc Track: Comparing and Combining Different IR Approaches.- Multi-language Models and Meta-dictionary Adaptation for Accessing Multilingual Digital Libraries.- Persian@CLEF.- Improving Persian Information Retrieval Systems Using Stemming and Part of Speech Tagging.- Fusion of Retrieval Models at CLEF 2008 Ad Hoc Persian Track.- Cross Language Experiments at Persian@CLEF 2008.- Robust-WSD.- Evaluating Word Sense Disambiguation Tools for Information Retrieval Task.- IXA at CLEF 2008 Robust-WSD Task: Using Word Sense Disambiguation for (Cross Lingual) Information Retrieval.- SENSE: SEmantic N-levels Search Engine at CLEF2008 Ad Hoc Robust-WSD Track.- IR-n in the CLEF Robust WSD Task 2008.- Query Clauses and Term Independence.- Analysis of Word Sense Disambiguation-Based Information Retrieval.- Crosslanguage Retrieval Based on Wikipedia Statistics.- Ad Hoc Mixed: TEL and Persian.- Sampling Precision to Depth 10000 at CLEF 2008.- JHU Ad Hoc Experiments at CLEF 2008.- UniNE at CLEF 2008: TEL, and Persian IR.- II: Mono- and Cross-Language Scientific Data Retrieval (Domain-Specific).- The Domain-Specific Track at CLEF 2008.- UniNE at Domain-Specific IR - CLEF 2008.- Back to Basics - Again - for Domain-Specific Retrieval.- Concept Models for Domain-Specific Search.- The Xtrieval Framework at CLEF 2008: Domain-Specific Track.- Using Wikipedia and Wiktionary in Domain-Specific Information Retrieval.- III: Interactive Cross-Language Retrieval (iCLEF).- Overview of iCLEF 2008: Search Log Analysis for Multilingual Image Retrieval.- Log Analysis of Multilingual Image Searches in Flickr.- Cross-Lingual Image Retrieval Interactions Based on a Game Competition.- A Study of Users’ Image Seeking Behaviour in FlickLing.- SICS at iCLEF 2008: User Confidence and Satisfaction Tentatively Inferred from iCLEF Logs.- IV: Multiple Language Question Answering (QA@CLEF).- Overview of the Clef 2008 Multilingual Question Answering Track.- Overview of the Answer Validation Exercise 2008.- Overview of QAST 2008.- Mono and Bilingual QA.- Assessing the Impact of Thesaurus-Based Expansion Techniques in QA-Centric IR.- Using AliQAn in Monolingual QA@CLEF 2008.- Priberam’s Question Answering System in QA@CLEF 2008.- IdSay: Question Answering for Portuguese.- Dublin City University at QA@CLEF 2008.- Using Answer Retrieval Patterns to Answer Portuguese Questions.- Ihardetsi: A Basque Question Answering System at QA@CLEF 2008.- Question Interpretation in QA@L2F.- UAIC Participation at QA@CLEF2008.- RACAI’s QA System at the Romanian-Romanian QA@CLEF2008 Main Task.- Combining Logic and Machine Learning for Answering Questions.- The MIRACLE Team at the CLEF 2008 Multilingual Question Answering Track.- Efficient Question Answering with Question Decomposition and Multiple Answer Streams.- DFKI-LT at QA@CLEF 2008.- Integrating Logic Forms and Anaphora Resolution in the AliQAn System.- Some Experiments in Question Answering with a Disambiguated Document Collection.- Answer Validation Exercise (AVE).- Answer Validation on English and Romanian Languages.- The Answer Validation System ProdicosAV Dedicated to French.- Studying the Influence of Semantic Constraints in AVE.- RAVE: A Fast Logic-Based Answer Validator.- Information Synthesis for Answer Validation.- Analyzing the Use of Non-overlap Features for Supervised Answer Validation.- Question Answering on Script Transcri...

Rese�a del editor

The ninth campaign of the Cross-Language Evaluation Forum (CLEF) for European languages was held from January to September 2008. There were seven main eval- tion tracks in CLEF 2008 plus two pilot tasks. The aim, as usual, was to test the p- formance of a wide range of multilingual information access (MLIA) systems or s- tem components. This year, 100 groups, mainly but not only from academia, parti- pated in the campaign. Most of the groups were from Europe but there was also a good contingent from North America and Asia plus a few participants from South America and Africa. Full details regarding the design of the tracks, the methodologies used for evaluation, and the results obtained by the participants can be found in the different sections of these proceedings. The results of the CLEF 2008 campaign were presented at a two-and-a-half day workshop held in Aarhus, Denmark, September 17–19, and attended by 150 resear- ers and system developers. The annual workshop, held in conjunction with the European Conference on Digital Libraries, plays an important role by providing the opportunity for all the groups that have participated in the evaluation campaign to get together comparing approaches and exchanging ideas. The schedule of the workshop was divided between plenary track overviews, and parallel, poster and breakout sessions presenting this year’s experiments and discu- ing ideas for the future. There were several invited talks.

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