| Vol-1175 urn:nbn:de:0074-1175-4 Copyright © 2009 for the individual papers by the papers' authors. Copying permitted only for private and academic purposes. This volume is published and copyrighted by its editors.

# CLEF 2009
CLEF2009 Working Notes

### Working Notes for CLEF 2009 Workshop
co-located with the 13th European Conference on Digital Libraries (ECDL 2009)

### Corfù, Greece, September 30 - October 2, 2009.

Edited by

### Carol Peters *
Nicola Ferro (CEUR-WS Republishing Managing Editor) **

* Istituto di Scienze e Tecnologie dell'Informazione (ISTI), CNR, Pisa, Italy
** Department of Information Engineering (DEI), University of Padua, Via Gradenigo 6/B, 35131, Padova, Italy

## Table of Contents

### Preface

- What Happened in CLEF2009: Introduction to the Working Notes
  Carol Peters

### Cross-Language Retrieval in Image Collections

- Diversity in Photo Retrieval: Overview of the ImageCLEFPhoto Task 2009
  Monica Lestari Paramita, Mark Sanderson, Paul Clough
- Overview of the CLEF 2009 Large Scale - Visual Concept Detection and Annotation Task
  Stefanie Nowak, Peter Dunker
- Overview of the WikipediaMM Task at ImageCLEF 2009
  Theodora Tsikrika, Jana Kludas
- Overview of the CLEF 2009 Medical Image Retrieval Track
  Henning Müller, Jayashree Kalpathy-Cramer, Ivan Eggel, Steven Bedrick, Saïd Radhouani, Brian Bakke, Charles E. Kahn Jr., William Hersh
- Overview of the CLEF 2009 Medical Image Annotation Track
  Tatiana Tommasi, Barbara Caputo, Petra Welter, Mark Oliver Güld, Thomas M. Deserno
- Overview of the CLEF 2009 Robot Vision Track
  Barbara Caputo, Andrzej Pronobis, Patric Jensfelt
- MIRACLE-GSI at ImageCLEFphoto 2009: Comparing Clustering vs. Classification for Result Reranking
  Julio Villena-Román, Sara Lana-Serrano, José C. González-Cristóbal
- CLaC at ImageCLEF 2009
  Osama El Demerdash, Sabine Bergler, Leila Kosseim
- Multimodal Photo Retrieval through Finding Similar Documents Enhanced with Visual Clues - a Baseline Method
  Bartosz Broda, Mariusz Paradowski, Halina Kwanicka
- IAM@ImageCLEFphoto 2009: Experiments on Maximising Diversity using Image Features
  Jonathon S. Hare, David P. Dupplaw, Paul H. Lewis
- CWI at the Photo Retrieval Task of ImageCLEF 2009
  Theodora Tsikrika, Arjen P. de Vries
- SINAI at ImagePhoto 2009
  M.A. García-Cumbreras, M.C. Díaz-Galiano, A. Montejo-Raez, M.T. Martín-Valdivia
- The University of Glasgow at ImageCLEFPhoto 2009
  Guido Zuccon, Teerapong Leelanupab, Anuj Goyal, Martin Halvey, P. Punitha, Joemon M. Jose
- Clustering for Text and Image-based Photo Retrieval at CLEF 2009
  Qian Zhu, Diana Inkpen
- MIRACLE (FI) at ImageCLEFphoto 2009
  R. Granados, X. Benavent, R. Agerri, A. García-Serrano, J.M. Goñi, J. Gomar, E. de Ves, J. Domingo, G. Ayala
- I2R at ImageCLEF Photo Retrieval 2009
  Sheng Gao, Joo-Hwee Lim
- Combining Text/Image in WikipediaMM Task 2009
  Christophe Moulin, Cécile Barat, Cédric Lemaître, Mathias Géry, Christophe Ducottet, Christine Largeron
- DEU at ImageCLEF 2009 WikipediaMM Task: Experiments with Expansion and Reranking Approaches
  Deniz Kilinç, Adil Alpkoçak
- IIIT-H at ImageCLEF Wikipedia MM 2009
  Srinivasarao Vundavalli
- Visual Reranking for Image Retrieval over the Wikipedia Corpus
  Débora Myoupo, Adrian Popescu, Hervé Le Borgne, Pierre-Alain Moëllic
- SINAI at ImageCLEF 2009 WikipediaMM Task
  M.C. Díaz-Galiano, M.T. Martín-Valdivia, L.A. Ureña-López, J.M. Perea-Ortega
- DCU at WikipediaMM 2009: Document Expansion from Wikipedia Abstracts
  Jinming Min, Peter Wilkins, Johannes Leveling, Gareth Jones
- MIRACLE at ImageCLEFmed 2009: Reevaluating Strategies for Automatic Topic Expansion
  Sara Lana-Serrano, Julio Villena-Román, José C. González-Cristóbal
- Towards A Better Performance for Medical Image Retrieval Using An Integrated Approach
  Zheng Ye, Xiangji Huang, Hongfei Lin
- United Institute of Informatics - Problems at CLEF 2009 Medical Image Retrieval Task
  Vassili Kovalev, Igor Safonov, Alexander Dmitruk, Alexander Prus
- DEU at ImageCLEFmed 2009: Evaluating a Re-ranking and Integrated Retrieval Model
  Tolga Berber, Adil Alpoçak
- UNT at ImageCLEFmed 2009
  Miguel E. Ruiz
- Multimodal Medical Image Retrieval: Improving Precision at ImageCLEF 2009
  Saïd Radhouani, Jayashree Kalpathy-Cramer, Steven Bedrick, Brian Bakke, William Hersh
- Medical Image Retrieval: ISSR at CLEF 2009
  Waleed Arafa, Ragia Ibrahim
- SINAI at ImageCLEF 2009 Medical Task
  M.C. Díaz-Galiano, M.T. Martín-Valdivia, L.A. Ureña-López, M.A. García-Cumbreras
- Combined Content based and Semantic Image Retrieval
  Ioannis Boutsis, Theodore Kalamboukis
- Text- and Content-based Approaches to Image Retrieval for the ImageCLEF 2009 Medical Retrieval Track
  Matthew Simpson, Md Mahmudur Rahman, Dina Demner-Fushman, Sameer Antani, George R. Thoma
- Analysis Combination and Pseudo Relevance Feedback in a Conceptual Language Model: LIRIS participation in ImageClefMed
  Loïc Maisonnasse, Farah Harrathi
- Taking Benefit of Query and Document Expansion using MeSH Descriptors in Medical ImageCLEF 2009
  Julien Gobeill, Douglas Theodoro, Emilie Patsche, Patrick Ruch
- Addressing the ImageClef 2009 Challenge Using a Patch-based Visual Words Representation
  U. Avni, J. Goldberger, H. Greenspan
- ImageCLEF 2009 Medical Image Annotation Task: PCTs for Hierarchical Multi-Label Classification
  Ivica Dimitrovski, Dragi Kocev, Suzana Loskovska, Saso Dzeroski
- Medical Image Retrieval and Automatic Annotation: VPA-SABANCI at ImageCLEF 2009
  Devrim Unay, Octavian Soldea, Sureyya Ozogur-Akyuz, Mujdat Cetin, Aytul Ercil
- LSIS Scaled Photo Annotations: Discriminant Features SVM versus Visual Dictionary based on Image Frequency
  Zhong-Qiu Zhao, Herve Glotin, Emilie Dumont
- The University of Amsterdam's Concept Detection System at ImageCLEF 2009
  Koen E. A. van de Sande, Theo Gevers, Arnold W. M. Smeulders
- Comparison of Various AVEIR Visual Concept Detectors with an Index of Carefulness
  H. Glotin, A. Fakeri-Tabrizi, P. Mulhem, M. Ferecatu, Z. Zhao, S. Tollari, G. Quenot, H. Sahbi, E. Dumont, P. Gallinari
- I2R ImageCLEF Photo Annotation 2009 Working Notes
  Jiquan Ngiam, Hanlin Goh
- Joint Equal Contribution of Global and Local Features for Image Annotation
  Supheakmungkol Sarin, Wataru Kameyama
- University of Glasgow at Image CLEF 2009 Robot Vision Task
  Yue Feng, Martin Halvey, Joemon M. Jose
- MMIS at ImageCLEF 2009: Non-parametric Density Estimation Algorithms
  Ainhoa Llorente, Suzanne Little, Stefan Rüger
- UAIC: Participation in ImageCLEF 2009 Robot Vision Task
  Emanuela Boroş, George Roşca, Adrian Iftene
- UAIC at ImageCLEF 2009 Photo Annotation Task
  Adrian Iftene, Loredana Vamanu, Cosmina Croitoru
- Fast LSIS Profile Entropy Features for Robot Visual Self-Localization
  Herve Glotin, Zhong-Qiu Zhao, Emilie Dumonti
- A Particle-Filter Based Self-Localization Method using Invariant Features as Visual Information
  Jesús Martínez-Gómez, Alejando Jiménez-Picazo, Ismael García-Varea
- Visual Language Modeling for Mobile Localization: LIG Participation in RobotVision'09
  Trong-Ton Pham, Loïc Maisonnasse, Philippe Mulhem
- IAM@ImageCLEFPhotoAnnotation 2009: Naïve Application of a Linear-Algebraic Semantic Space
  Jonathon S. Hare, Paul H. Lewis
- Fraunhofer FIRST's Submission to ImageCLEF2009 Photo Annotation Task: Non-sparse Multiple Kernel Learning
  Alexander Binder, Motoaki Kawanabe
- TELECOM ParisTech at ImageClef 2009: Large Scale Visual Concept Detection and Annotation Task
  Marin Ferecatu, Hichem Sahbi
- UPMC/LIP6 at ImageCLEFannotation2009: Large Scale Visual Concept Detection and Annotation
  Ali Fakeri-Tabrizi, Sabrina Tollari, Ludovic Denoyer, Patrick Gallinari
- Evaluating Fusion Techniques at Different Domains in ImageCLEF Subtasks
  Sergio Navarro, Rafael Muñoz, Fernando Llopis
- SZTAKI @ ImageCLEF 2009
  Bálint Daróczy, István Petrás, András A. Benczúr, Zsolt Fekete, Dávid Nemeskey, Dávid Siklósi, Zsuzsa Weiner
- XRCE's Participation in ImageCLEF 2009
  Julien Ah-Pine, Stephane Clinchant, Gabriela Csurka, Yan Liu
- MRIM-LIG at ImageCLEF 2009: Photo Retrieval and Photo Annotation Tasks
  Philippe Mulhem, Jean-Pierre Chevallet, Georges Quénot, Rami Al Batal
- The MedGIFT Group at ImageCLEF 2009
  Xin Zhou, Ivan Eggel, Henning Müller
- INRIA-LEAR's Participation in ImageCLEF 2009
  Matthijs Douze, Matthieu Guillaumin, Thomas Mensink, Cordelia Schmid, Jakob Verbeek
- TIA-INAOE's Participation in ImageCLEF 2009
  Hugo Jair Escalante, Jesús A. González, Carlos A. Hernández, Aurelio López, Manuel Montes, Eduardo Morales, Elías Ruiz, Luis E. Sucar, Luis Villaseñor

### Cross-Language Video Retrieval

- Overview of VideoCLEF 2009: New Perspectives on Speech-based Multimedia Content Enrichment
  Martha Larson, Eamonn Newman, Gareth Jones
- A Cocktail Approach to the VideoCLEF'09 Linking Task
  Stephan Raaijmakers, Corne Versloot, Joost de Wit
- Exploiting Speech Recognition Transcripts for Narrative Peak Detection in Short-Form Documentaries
  Martha Larson, Bart Jochems, Ewine Smits, Roeland Ordelman
- Chemnitz at VideoCLEF 2009: Experiments and Observations on Treating Classification as an IR Task
  Jens Kürsten, Maximilian Eibl
- Identification of Narrative Peaks in Clips: Text Features Perform Best
  Joep J.M. Kierkels, Mohammad Soleymani, Thierry Pun
- SINAI at VideoCLEF 2009
  José M. Perea-Ortega, Arturo Montejo-Ráez, M. Teresa Martín-Valdivia, L. Alfonso Ureña-López
- DCU at VideoCLEF 2009
  ágnes Gyarmati, Gareth J. F. Jones
- UAIC: Participation in VideoCLEF Task
  Tudor-Alexandru Dobrilă, Mihail-Ciprian Diaconaşu, Irina-Diana Lungu, Adrian Iftene

### Grid Experiments

- Grid@CLEF 2009 Track Overview
  Nicola Ferro, Donna Harman
- The Importance of being Grid: Chemnitz University of Technology at Grid@CLEF
  Maximilian Eibl, Jens Kürsten
- Decomposing Text Processing for Retrieval: Cheshire tries GRID@CLEF
  Ray R. Larson

### Interactive Cross-Language Information Retrieval

- Overview of iCLEF 2009: Exploring Search Behaviour in a Multilingual Folksonomy Environment
  Julio Gonzalo, Víctor Peinado, Paul Clough, Jussi Karlgren
- Users' Image Seeking Behavior in a Multilingual Tag Environment
  Miguel E Ruiz, Pok Chin
- UAIC at iCLEF 2009: Analysis of Logs of Multilingual Image Searches in Flickr
  Florin-Tudor Cristea, Vlad Alexa, Adrian Iftene
- UNED at iCLEF 2009: Analysis of Multilingual Image Search Sessions
  Víctor Peinado, Fernando López-Ostenero, Julio Gonzalo
- Lexical Ambiguity in Cross-language Image Retrieval: a Preliminary Analysis
  Borja Navarro-Colorado, Marcel Puchol-Blasco, Rafael M. Terol, Sonia Vázquez, Elena Lloret
- Users' Perceptions of Searching in FlickLing
  Evgenia Vassilakaki, Frances Johnson, R.J. Hartley, David Randall

### Log File Analysis

- LogCLEF 2009: the CLEF 2009 Multilingual Logfile Analysis Track Overview
  Thomas Mandl, Maristella Agosti, Giorgio Di Nunzio, Alexander Yeh, Inderjeet Mani, Christine Doran, Julia Maria Schulz
- Search Path Visualization and Session Performance Evaluation with Log Files from The European Library (TEL)
  Katrin Lamm, Thomas Mandl, Ralph Kölle
- UAIC: Participation in LAGI Task
  Adrian Iftene
- CACAO Project at the LogCLEF Track
  Alessio Bosca, Luca Dini
- TCD-DCU at LogCLEF 2009: An Analysis of Queries, Actions, and Interface Languages
  M. Rami Ghorab, Johannes Leveling, Dong Zhou, Gareth J. F. Jones, Vincent Wade
- A Search Engine based on Query Logs and Search Log Analysis at the University of Sunderland
  Michael Oakes, Yan Xu
- A Semantic Perspective on Query Log Analysis
  Katja Hofmann, Maarten de Rijke, Bouke Huurnink, Edgar Meij

### Miscellanea

- UniNE at CLEF 2009: Persian Ad Hoc Retrieval and IP
  Ljiljana Dolamić, Claire Fautsch, Jacques Savoy

### Multilingual Document Retrieval

- CLEF 2009 Ad Hoc Track Overview: TEL and Persian Tasks
  Nicola Ferro, Carol Peters
- CLEF 2009 Ad Hoc Track Overview: Robust - WSD Task
  Eneko Agirre, Giorgio M. Di Nunzio, Thomas Mandl, Arantxa Otegi
- Evaluating Cross-Language Explicit Semantic Analysis and Cross Querying at TEL@CLEF 2009
  Maik Anderka, Nedim Lipka, Benno Stein
- Language Modeling and Document Re-Ranking: Trinity Experiments at TEL@CLEF-2009
  Dong Zhou, Vincent Wade
- Multilingual Query Expansion for CLEF Adhoc-TEL
  Ray R. Larson
- Experiments with N-Gram Prefixes on a Multinomial Language Model versus Lucene's Off-the-shelf Ranking Scheme and Rocchio Query Expansion (TEL@CLEF Monolingual Task)
  Jorge Machado, Bruno Martins, José Borbinha
- Chemnitz at CLEF 2009 Ad-Hoc TEL Task: Combining Different Retrieval Models and Addressing the Multilinguality
  Jens Kürsten
- Cross-lingual Information Retrieval based on Multiple Indexes
  Philipp Sorg, Marlon Braun, David Nicolay, Philipp Cimiano
- UAIC: Participation in TEL@CLEF Task
  Adrian Iftene, Alina-Elena Mihåilå, Ingride-Paula Epure
- An Evaluation of Greek-English Cross Language Retrieval within the CLEF Ad-Hoc Bilingual Task
  Polyxeni Katsiouli, Theodore Kalamboukis
- HIT2Lab at CLEF: an Exploration of the TEL Task
  He Xiaoning, Qi Haoliang, Wang Peidong, Yang Muyun, Lei Guohua, Xue Yong
- CACAO Project at the TEL@CLEF 2009 Task
  Alessio Bosca, Luca Dini
- TCD-DCU at TEL@CLEF 2009: Document Expansion, Query Translation and Language Modeling
  Dong Zhou, Vincent Wade
- JHU Experiments in Monolingual Farsi Document Retrieval at CLEF 2009
  Paul McNamee
- Query Wikification: Mining Structured Queries From Unstructured Information Needs using Wikipedia-based Semantic Analysis
  Amir Hossein Jadidinejad, Fariborz Mahmoudi
- German, French, English and Persian Retrieval Experiments at CLEF 2009
  Stephen Tomlinson
- UNIBA-SENSE @ CLEF 2009: Robust WSD task
  Pierpaolo Basile, Annalina Caputo, Giovanni Semeraro
- Application of Axiomatic Approaches to Crosslanguage Retrieval
  Roman Kern, Andreas Juffinger, Michael Granitzer
- UniGe at CLEF 2009 Robust WSD Task (abstract only)
  Jacques Guyot, Gilles Falquet, Saïd Radhouani
- Using Semantic Relatedness and Word Sense Disambiguation for (CL)IR
  Eneko Agirre, Arantxa Otegi, Hugo Zaragoza
- Combining Probabilistic and Translation-Based Models for Information Retrieval based on Word Sense Annotations
  Elisabeth Wolf, Delphine Bernhard, Iryna Gurevych
- UFRGS@CLEF2009: Retrieval by Numbers
  Thyago Bohrer Borges, Viviane P. Moreira
- REINA at CLEF 2009 Robust-WSD Task: Partial Use of WSD Information for Retrieval
  Angel Zazo, Carlos G. Figuerola, Jose L. Alonso Berrocal, Raquel Gomez
- NLEL at CLEF 2009 Robust WSD Task
  Davide Buscaldi, Paolo Rosso
- Alicante at CLEF 2009 Robust-WSD Task
  Javi Fernández, Rubén Izquierdo, José M. Gómez

### MorphoChallenge

- Overview and Results of Morpho Challenge 2009
  Mikko Kurimo, Sami Virpioja, Ville T. Turunen, Graeme W. Blackwood, William Byrne
- MorphoNet: Exploring the Use of Community Structure for Unsupervised Morpheme Analysis
  Delphine Bernhard
- Unsupervised Learning of Morphology by using Syntactic Categories
  Burcu Can, Suresh Manandhar
- UNGRADE: UNsupervised GRAph DEcomposition
  Bruno Golénia, Sebastian Spiegler, Peter Flach
- Morphological Acquisition by Formal Analogy
  Jean-Francois Lavallee, Philippe Langlais
- A Rule-Based Unsupervised Morphology Learning Framework
  Constantine Lignos, Erwin Chan, Mitchell P. Marcus, Charles Yang
- Probabilistic ParaMor
  Christian Monson, Kristy Hollingshead, Brian Roark
- PROMODES: A Probabilistic Generative Model for Word Decomposition
  Sebastian Spiegler, Bruno Golenia, Peter Flach
- Multiple Sequence Alignment for Morphology Induction
  Tzvetan Tchoukalov, Brian Roark, Christian Monson
- Unsupervised Morpheme Discovery with Allomorfessor
  Sami Virpioja, Oskar Kohonen

### Multilingual Information Filtering

- Overview of CLEF 2009 INFILE track
  Romaric Besançon, Stéphane Chaudiron, Djamel Mostefa, Ismaïl Timimi, Khalid Choukri, Meriama Laïb
- Batch Document Filtering Using Nearest Neighbor Algorithm
  Ali Mustafa Qamar, Eric Gaussier, Nathalie Denos
- Hosur'Tech Participation in Interactive INFILE
  John Anton Chrisostom Ronald, Aurélie Rossi, Christian Fluhr
- UAIC: Participation in INFILE@CLEF Task
  Cristian-Alexandru Drăguşanu, Alecsandru Grigoriu, Andreea-Loredana Andreşan, Daniela Epure, Dan Anton, Adrian Iftene
- SINAI at INFILE 2009: Experiments with Google News
  Arturo Montejo-Ráez, Jos e M. Perea-Ortega, Manuel Carlos Díaz-Galiano, L. Alfonso Ureña-López
- Using Human Plausible Reasoning as a Framework for Multilingual Information Filtering
  Asma Damankesh, Jaspreet Singh, Fatima Jahedpari, Khaled Shaalan, Farhad Oroumchian

### Multiple Language Question Answering

- Overview of ResPubliQA 2009: Question Answering Evaluation over European Legislation
  Anselmo Peñas, Pamela Forner, Richard Sutcliffe, Álvaro Rodrigo, Corina Forăscu, Iñaki Alegria, Danilo Giampiccolo, Nicolas Moreau, Petya Osenova
- Overview of QAST 2009
  J. Turmo, P.R. Comas, S. Rosset, O. Galibert, N. Moreau, D. Mostefa, P. Rosso, D. Buscaldi
- GikiCLEF: Crosscultural Issues in an International Setting: Asking non-English-centered Questions to Wikipedia
  Diana Santos, Luís Miguel Cabral
- The LogAnswer Project at CLEF 2009
  Ingo Gloeckner, Bjoern Pelzer
- Elhuyar-IXA: Semantic Relatedness and Cross-lingual Passage Retrieval
  Eneko Agirre, Olatz Ansa, Xabier Arregi, Maddalen Lopez de Lacalle, Arantxa Otegi, Xabier Saralegi, Hugo Zaragoza
- Are Passages Enough? The MIRACLE Team Participation in QA@CLEF2009
  María Teresa Vicente-Díez, César de Pablo-Sánchez, Paloma Martínez, Julián Moreno Schneider, Marta Garrote Salazar
- NLEL-MAAT at CLEF-ResPubliQA
  Santiago Correa, Davide Buscaldi, Paolo Rosso
- Question Answering on English and Romanian Languages
  Adrian Iftene, Diana Trandabåţ, Ionuţ Pistol, Alex-Mihai Moruz, Maria Husarciuc, Mihai Sterpu, Cålin Turliuc
- A Trainable Multi-factored QA System
  Radu Ion, Dan Ştefănescu, Alexandru Ceauşu, Dan Tufiş, Elena Irimia, Verginica Barbu-Mititelu
- FIDJI in ResPubliQA 2009
  Xavier Tannier, Véronique Moriceau
- Information Retrieval Baselines for the ResPubliQA Task
  Joaquín Pérez, Guillermo Garrido, Alvaro Rodrigo, Lourdes Araujo, Anselmo Peñas
- A Naïve Approach for Monolingual Question Answering
  Rohit Bharadwaj, Surya Ganesh Vasudeva Varma
- Approaching Question Answering by means of Paragraph Validation
  álvaro Rodrigo, Joaquín Pérez, Anselmo Peñas, Guillermo Garrido, Lourdes Araujo
- CLEF 2009 Question Answering Experiments at Tokyo Institute of Technology
  Matthias H. Heie, Josef R. Novak, Edward W. D. Whittaker, Sadaoki Furui
- INAOE at QAST 2009: Evaluating the Usefulness of a Phonetic Codification of Transcriptions
  Alejandro Reyes-Barragán, Luis Villaseñor-Pineda, Manuel Montes-y-Gómez
- Robust Question Answering for Speech Transcripts: UPC Experience in QAst 2009
  Pere R. Comas, Jordi Turmo
- LIMSI participation in the QAst 2009 track
  Guillaume Bernard, Sophie Rosset, Olivier Galibert, Eric Bilinski, Gilles Adda
- TALP at GikiCLEF 2009
  Daniel Ferrés, Horacio Rodríguez
- Where in Wikipedia is that Answer? XLDB at the GikiCLEF 2009 task
  Nuno Cardoso, David Batista, Francisco J. Lopez-Pellicer, Mário J. Silva
- Interactive Probabilistic Search for GikiCLEF
  Ray R. Larson
- EQUAL: Encyclopaedic QUestion Answering for Lists
  Iustin Dornescu
- BBK-UFRGS@CLEF2009: Query Expansion of Geographic Place Names
  Richard Flemmings, Joana Barros, André P. Geraldo, Viviane P. Moreira
- GIRSA-WP at GikiCLEF: Integration of Structured Information and Decomposition of Questions
  Sven Hartrumpf, Johannes Leveling
- Wikipedia Entity Retrieval for Dutch and Spanish
  Gosse Bouma, Sergio Duarte
- UAIC at GikiCLEF 2009
  Adrian Iftene, Andrei-Cristian Prodan, Ion-Cătălin Condrea

### Retrieval in the Intellectual Property Domain

- CLEF-IP 2009: Retrieval Experiments in the Intellectual Property Domain
  Giovanna Roda, John Tait, Florina Piroi, Veronika Zenz
- Prior Art Retrieval using the Claims Section as a Bag of Words
  Suzan Verberne, Eva D'hondt
- Exploring a Wide Range of Simple Pre and Post Processing Strategies for Patent Searching in CLEF IP 2009
  Julien Gobeill, Douglas Theodoro, Patrick Ruch
- DCU @ CLEF-IP 2009: Exploring Standard IR Techniques on Patent Retrieval
  Walid Magdy, Johannes Leveling, Gareth J.F. Jones
- Automatically Generating Queries for Prior Art Search
  Erik Graf, Leif Azzopardi, Keith van Rijsbergen
- UTA and SICS at CLEF-IP
  Antti Järvelin, Anni Järvelin, Preben Hansen
- Patent Retrieval Experiments in the Context of the CLEF IP Track 2009
  Daniela Becks, Christa Womser-Hacker, Thomas Mandl, Ralph Kölle
- NLEL-MAAT at CLEF-IP
  Santiago Correa, Davide Buscaldi, Paolo Rosso
- Multiple Retrieval Models and Regression Models for Prior Art Search
  Patrice Lopez, Laurent Romary
- Running CLEF-IP Experiments using a Graphical Query Builder
  W. Alink, R. Cornacchia, A. P. de Vries
- UAIC: Participation in CLEF-IP Track
  Adrian Iftene, Ovidiu Ionescu, George-Răzvan Oancea, Andrei-Dumitru Balmoş
- Prior Art Search using International Patent Classification Codes and All-Claims-Queries
  György Szarvas, Benjamin Herbert, Iryna Gurevych
- The UniGe Experiments on the Search for Earlier Patents (Abstract only)
  Jacques Guyot, Gilles Falquet, Karim Benzineb
- University of Santiago de Compostela at CLEF-IP09
  José Carlos Toucedo, David E. Losada

### Appendix

- Appendix A: Results of the TEL@CLEF Track
- Appendix B: Results of the Persian@CLEF Track
- Appendix C: Results of the Robust-WSD Track
- Appendix D: Results of the Grid@CLEF Track
- Appendix E: CLEF 2009 Participating Institutions

2014-08-18: submitted by Nicola Ferro
2014-08-22: published on CEUR-WS.org |valid HTML5|