Carol Peters (auth.), Carol Peters, Valentin Jijkoun, Thomas Mandl, Henning Müller, Douglas W. Oard, Anselmo Peñas, Vivien Petras, Diana Santos (eds.)3540857591, 9783540857594
This book constitutes the thoroughly refereed proceedings of the 8th Workshop of the Cross-Language Evaluation Forum, CLEF 2007, held in Budapest, Hungary, September 2007.
The revised and extended papers were carefully reviewed and selected for inclusion in the book. There are 115 contributions in total and an introduction. The seven distrinct evaluation tracks in CLEF 2007, are designed to test the performance of a wide range of multilingual information access systems or system components. The papers are organized in topical sections on Multilingual Textual Document Retrieval (Ad Hoc), Domain-Specific Information Retrieval (Domain-Specific), Multiple Language Question Answering (QA@CLEF), cross-language retrieval in image collections (Image CLEF), cross-language speech retrieval (CL-SR), multilingual Web retrieval (WebCLEF), cross-language geographical retrieval (GeoCLEF), and CLEF in other evaluations.
Table of contents :
Front Matter….Pages –
What Happened in CLEF 2007….Pages 1-12
CLEF 2007: Ad Hoc Track Overview….Pages 13-32
Charles University at CLEF 2007 Ad-Hoc Track….Pages 33-36
Stemming Approaches for East European Languages….Pages 37-44
Applying Query Expansion Techniques to Ad Hoc Monolingual Tasks with the IR-n System….Pages 45-48
Bulgarian, Hungarian and Czech Stemming Using YASS….Pages 49-56
Sampling Precision to Depth 10000 at CLEF 2007….Pages 57-63
Disambiguation and Unknown Term Translation in Cross Language Information Retrieval….Pages 64-71
Cross-Language Retrieval with Wikipedia….Pages 72-79
Cross-Lingual Information Retrieval System for Indian Languages….Pages 80-87
Bengali, Hindi and Telugu to English Ad-Hoc Bilingual Task at CLEF 2007….Pages 88-94
Bengali and Hindi to English CLIR Evaluation….Pages 95-102
Improving Recall for Hindi, Telugu, Oromo to English CLIR….Pages 103-110
Hindi to English and Marathi to English Cross Language Information Retrieval Evaluation….Pages 111-118
Amharic-English Information Retrieval with Pseudo Relevance Feedback….Pages 119-126
Indonesian-English Transitive Translation for Cross-Language Information Retrieval….Pages 127-133
Robust Retrieval Experiments at the University of Hildesheim….Pages 134-136
SINAI at CLEF Ad-Hoc Robust Track 2007: Applying Google Search Engine for Robust Cross-Lingual Retrieval….Pages 137-142
Improving Robustness Using Query Expansion….Pages 143-147
English-to-French CLIR: A Knowledge-Light Approach through Character N -Grams Alignment….Pages 148-155
MIRACLE Progress in Monolingual Information Retrieval at Ad-Hoc CLEF 2007….Pages 156-159
The Domain-Specific Track at CLEF 2007….Pages 160-173
The XTRIEVAL Framework at CLEF 2007: Domain-Specific Track….Pages 174-181
Query Translation through Dictionary Adaptation….Pages 182-187
Experiments in Classification Clustering and Thesaurus Expansion for Domain Specific Cross-Language Retrieval….Pages 188-195
Domain-Specific IR for German, English and Russian Languages….Pages 196-199
Overview of the CLEF 2007 Multilingual Question Answering Track….Pages 200-236
Overview of the Answer Validation Exercise 2007….Pages 237-248
Overview of QAST 2007….Pages 249-256
Question Answering with Joost at CLEF 2007….Pages 257-260
What Happened to Esfinge in 2007?….Pages 261-268
Coreference Resolution for Questions and Answer Merging by Validation….Pages 269-272
Multilingual Question Answering through Intermediate Translation: LCC’s PowerAnswer at QA@CLEF 2007….Pages 273-283
RACAI’s Question Answering System at QA@CLEF2007….Pages 284-291
DFKI-LT at QA@CLEF 2007….Pages 292-299
University of Wolverhampton at CLEF 2007….Pages 300-307
Bilingual Question Answering Using CINDI_QA at QA@CLEF 2007….Pages 308-315
The University of Évora’s Participation in QA@CLEF-2007….Pages 316-323
Web-Based Anaphora Resolution for the QUASAR Question Answering System….Pages 324-327
A Lexical Approach for Spanish Question Answering….Pages 328-331
Finding Answers Using Resources in the Internet….Pages 332-335
UAIC Romanian QA System for QA@CLEF….Pages 336-343
The University of Amsterdam’s Question Answering System at QA@CLEF 2007….Pages 344-351
Combining Wikipedia and Newswire Texts for Question Answering in Spanish….Pages 352-355
QA@L 2 F, First Steps at QA@CLEF….Pages 356-363
Priberam’s Question Answering System in QA@CLEF 2007….Pages 364-371
Combining Logic and Aggregation for Answer Selection….Pages 372-376
On the Application of Lexical-Syntactic Knowledge to the Answer Validation Exercise….Pages 377-380
Combining Lexical Information with Machine Learning for Answer Validation at QA@CLEF 2007….Pages 381-386
Using Recognizing Textual Entailment as a Core Engine for Answer Validation….Pages 387-390
A Supervised Learning Approach to Spanish Answer Validation….Pages 391-394
UAIC Participation at AVE 2007….Pages 395-403
UNED at Answer Validation Exercise 2007….Pages 404-409
Adapting QA Components to Mine Answers in Speech Transcripts….Pages 410-413
The LIMSI Participation in the QAst Track….Pages 414-423
Robust Question Answering for Speech Transcripts Using Minimal Syntactic Analysis….Pages 424-432
Overview of the ImageCLEFphoto 2007 Photographic Retrieval Task….Pages 433-444
Overview of the ImageCLEF 2007 Object Retrieval Task….Pages 445-471
Overview of the ImageCLEFmed 2007 Medical Retrieval and Medical Annotation Tasks….Pages 472-491
FIRE in ImageCLEF 2007: Support Vector Machines and Logistic Models to Fuse Image Descriptors for Photo Retrieval….Pages 492-499
MIRACLE at ImageCLEFphoto 2007: Evaluation of Merging Strategies for Multilingual and Multimedia Information Retrieval….Pages 500-503
Using an Image-Text Parallel Corpus and the Web for Query Expansion in Cross-Language Image Retrieval….Pages 504-511
SINAI System: Combining IR Systems at ImageCLEFPhoto 2007….Pages 512-517
Multimodal Retrieval by Text–Segment Biclustering….Pages 518-521
Analysing an Approach to Information Retrieval of Visual Descriptions with IR-n, a System Based on Passages….Pages 522-529
DCU and UTA at ImageCLEFPhoto 2007….Pages 530-537
Cross-Language and Cross-Media Image Retrieval: An Empirical Study at ImageCLEF2007….Pages 538-545
Towards Annotation-Based Query and Document Expansion for Image Retrieval….Pages 546-553
Content-Based Image Retrieval Using Combined 2D Attribute Pattern Spectra….Pages 554-561
Text-Based Clustering of the ImageCLEFphoto Collection for Augmenting the Retrieved Results….Pages 562-568
Trans-Media Pseudo-Relevance Feedback Methods in Multimedia Retrieval….Pages 569-576
Cue Integration for Medical Image Annotation….Pages 577-584
Multiplying Concept Sources for Graph Modeling….Pages 585-592
MIRACLE at ImageCLEFmed 2007: Merging Textual and Visual Strategies to Improve Medical Image Retrieval….Pages 593-596
MIRACLE at ImageCLEFanot 2007: Machine Learning Experiments on Medical Image Annotation….Pages 597-600
Integrating MeSH Ontology to Improve Medical Information Retrieval….Pages 601-606
Speeding Up IDM without Degradation of Retrieval Quality….Pages 607-614
Content-Based Medical Image Retrieval Using Low-Level Visual Features and Modality Identification….Pages 615-622
Medical Image Retrieval and Automatic Annotation: OHSU at ImageCLEF 2007….Pages 623-630
Using Bayesian Network for Conceptual Indexing: Application to Medical Document Indexing with UMLS Metathesaurus….Pages 631-636
Baseline Results for the ImageCLEF 2007 Medical Automatic Annotation Task Using Global Image Features….Pages 637-640
Evaluation of Automatically Assigned MeSH Terms for Retrieval of Medical Images….Pages 641-648
University and Hospitals of Geneva Participating at ImageCLEF 2007….Pages 649-656
An Interactive and Dynamic Fusion-Based Image Retrieval Approach by CINDI….Pages 657-664
Using Pseudo-Relevance Feedback to Improve Image Retrieval Results….Pages 665-673
Overview of the CLEF-2007 Cross-Language Speech Retrieval Track….Pages 674-686
A Dirichlet-Smoothed Bigram Model for Retrieving Spontaneous Speech….Pages 687-694
Model Fusion Experiments for the CLSR Task at CLEF 2007….Pages 695-702
Dublin City University at CLEF 2007: Cross-Language Speech Retrieval Experiments….Pages 703-711
What Can and Cannot Be Found in Czech Spontaneous Speech Using Document-Oriented IR Methods — UWB at CLEF 2007 CL-SR Track….Pages 712-718
Using Information Gain to Filter Information in CLEF CL-SR Track….Pages 719-724
Overview of WebCLEF 2007….Pages 725-731
Segmentation of Web Documents and Retrieval of Useful Passages….Pages 732-736
Using Centrality to Rank Web Snippets….Pages 737-741
Using Web-Content for Retrieving Snippets….Pages 742-744
GeoCLEF 2007: The CLEF 2007 Cross-Language Geographic Information Retrieval Track Overview….Pages 745-772
Inferring Location Names for Geographic Information Retrieval….Pages 773-780
GeoParsing Web Queries….Pages 781-785
MIRACLE at GeoCLEF Query Parsing 2007: Extraction and Classification of Geographical Information….Pages 786-793
Relevance Measures Using Geographic Scopes and Types….Pages 794-801
Using Geographic Signatures as Query and Document Scopes in Geographic IR….Pages 802-810
Cheshire at GeoCLEF 2007: Retesting Text Retrieval Baselines….Pages 811-814
On the Relative Importance of Toponyms in GeoCLEF….Pages 815-822
Filtering for Improving the Geographic Information Search….Pages 823-829
TALP at GeoCLEF 2007: Results of a Geographical Knowledge Filtering Approach with Terrier….Pages 830-833
TALP at GeoQuery 2007: Linguistic and Geographical Analysis for Query Parsing….Pages 834-837
Applying Geo-feedback to Geographic Information Retrieval….Pages 838-841
Exploring LDA-Based Document Model for Geographic Information Retrieval….Pages 842-849
Mono-and Crosslingual Retrieval Experiments with Spatial Restrictions at GeoCLEF 2007….Pages 850-855
GIR Experiments with Forostar….Pages 856-863
Morpho Challenge Evaluation Using a Linguistic Gold Standard….Pages 864-872
Simple Morpheme Labelling in Unsupervised Morpheme Analysis….Pages 873-880
Unsupervised and Knowledge-Free Morpheme Segmentation and Analysis….Pages 881-891
Unsupervised Acquiring of Morphological Paradigms from Tokenized Text….Pages 892-899
ParaMor: Finding Paradigms across Morphology….Pages 900-907
SemEval-2007 Task 01: Evaluating WSD on Cross-Language Information Retrieval….Pages 908-917
Back Matter….Pages –
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