| Vol-1177 urn:nbn:de:0074-1177-2 Copyright © 2011 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 2011
CLEF2011 Working Notes

### Working Notes for CLEF 2011 Conference

### Amsterdam, The Netherlands, September 19-22, 2011.

Edited by

### Vivien Petras *
Pamela Forner **
Paul Clough ***
Nicola Ferro (CEUR-WS Republishing Managing Editor) ****

* Berlin School of Library and Information Science, Humboldt-Universität zu Berlin, Germany
** CELCT, Center for the Evaluation of Language and Communication Technologies, Trento, Italy
*** Information School, University of Sheffield, UK
**** Department of Information Engineering (DEI), University of Padua, Via Gradenigo 6/B, 35131, Padova, Italy

## Table of Contents

### Preface

- Introduction to the CLEF 2011 Labs
  Vivien Petras, Paul Clough

### Cross-Language Retrieval in Image Collections

- Overview of the Wikipedia Image Retrieval Task at ImageCLEF 2011
  Theodora Tsikrika, Adrian Popescu, Jana Kludas
- Overview of the CLEF 2011 Medical Image Classification and Retrieval Tasks
  Jayashree Kalpathy-Cramer, Henning Müller, Steven Bedricks, Ivan Eggel, Alba G. Seco de Herrera, Theodora Tsikrika
- The CLEF 2011 Photo Annotation and Concept-based Retrieval Tasks
  Stefanie Nowak, Karolin Nagel, Judith Liebetrau
- The CLEF 2011 Plant Images Classification Task
  Hervé Goëau, Pierre Bonnet Alexis Joly, Nozha Boujemaa, Daniel Barthelemy, Jean-François Molino, Philippe Birnbaum, Elise Mouysset, Marie Picard
- Multimodal Information Approaches for the Wikipedia Collection at ImageCLEF 2011
  Ruben Granados, Joan Benavent, Xaro Benavent, Esther de Ves, Ana García-Serrano
- UAIC's Participation at Wikipedia Retrieval @ ImageCLEF 2011
  Emanuela Boros, Alexandru-Lucian Gînsca , Adrian Iftene
- SINAI at ImageCLEF Wikipedia Retrieval Task 2011: Testing Combined Systems
  Miguel ángel García-Cumbreras, Manuel Carlos Díaz-Galiano, Luis Alfonso Ureña-López, Javier Arias-Buendía
- BTU DBIS' Multimodal Wikipedia Retrieval Runs at ImageCLEF 2011
  David Zellhöfer, Thomas Böttcher
- DUTH at ImageCLEF 2011 Wikipedia Retrieval
  Avi Arampatzis, Konstantinos Zagoris, Savvas A. Chatzichristofis
- DEMIR at ImageCLEFwiki 2011: Evaluating Different Weighting Schemes in Information Retrieval
  Tolga Berber, Ali Hosseinzadeh Vahid, Okan Ozturkmenoglu, Roghaiyeh Gachpaz Hamed, Adil Alpkocak
- Evaluating Some Contextual Factors for Image Retrieval - ReDCAD Participation at ImageCLEF Wikipedia 2011
  Hatem Awadi, Mouna Torjmen Khemakhem, Maher Ben Jemaa
- XRCE's Participation at Wikipedia Retrieval of ImageCLEF 2011
  Gabriela Csurka, Stéphane Clinchant, Adrian Popescu
- UNED-UV at Medical Retrieval Task of ImageCLEF 2011
  Angel Castellanos, Xaro Benavent, Joan Benavent, Ana García-Serrano
- IRIT at ImageCLEF 2011: Medical Retrieval Task
  Duy Dinh, Lynda Tamine
- The medGIFT Group in ImageCLEFmed 2011
  Dimitrios Markonis, Ivan Eggel, Alba Garcia Seco de Herrera, Henning Müller
- IPL at ImageCLEF 2011 Medical Retrieval Task
  Yiannis Gkoufas, Anna Morou, Theodore Kalamboukis
- Multi-facet Document Representation and Retrieval
  Karam Abdulahhad, Jean-Pierre Chevallet, Catherine Berrut
- AUDR at ImageCLEF2011: Medical Retrieval Task
  Junwu Luo, Xianglong Liu, Han Wang, Bo Lang
- DAEDALUS at ImageCLEF Medical Retrieval 2011: Textual, Visual and Multimodal Experiments
  Sara Lana-Serrano, Julio Villena-Román, José Carlos González-Cristóbal
- Text and Content-based Approaches to Image Modality Classification and Retrieval for the ImageCLEF 2011 Medical Retrieval Track
  Matthew Simpson, Md Mahmudur Rahman, Srinivas Phadnis, Emilia Apostolova, Dina Demner-Fushman, Sameer Antani, George Thoma
- LABERINTO at ImageCLEF 2011 Medical Image Retrieval Task
  Jacinto Mata, Mariano Crespo, Manuel J. Maña
- UESTC at ImageCLEF 2011 Medical Retrieval Task
  Hong Wu, Chengbo Tian
- UNT at ImageCLEF 2011: Relevance Models and Salient Semantic Analysis for Image Retrieval
  Miguel E. Ruiz, Chee Wee Leong, Samer Hassan
- DEMIR at ImageCLEFMed 2011: Evaluation of Fusion Techniques for Multimodal Content-based Medical Image Retrieval
  Adil Alpkocak, Okan Ozturkmenoglu, Tolga Berber, Ali Hosseinzadeh Vahid, Roghaiyeh Gachpaz Hamed
- RECOD at ImageCLEF 2011: Medical Modality Classification using Genetic Programming
  Fábio Augusto Faria, Rodrigo Tripodi Calumby, Ricardo da Silva Torres
- Multi-disciplinary Modality Classification for Medical Images
  Viktor Gál, Illés Solt, Tom Gedeon, Mike Nachtegael
- XRCE's Participation at Medical Image Modality Classification and Ad-hoc Retrieval Tasks of Image CLEF2011
  Gabriela Csurka, Stéphane Clinchant, Guillaume Jacquet
- Testing a Method for Statistical Image Classification in Image Retrieval
  Christoph Rasche, Constantin Vertan
- The Fraunhofer IDMT at ImageCLEF 2011 Photo Annotation Task
  Karolin Nagel, Stefanie Nowak, Uwe Kühhirt, Kay Wolter
- LIG-MRIM at Image Photo Annotation Task in ImageCLEF 2011
  Rami Albatal, Bahjat Safadi, Georges Quénot, Philippe Mulhem
- MUFIN at ImageCLEF 2011: Success or Failure?
  Petra Budikova, Michal Batko, Pavel Zezula
- MLKD's Participation at the CLEF 2011 Photo Annotation and Concept-Based Retrieval Tasks
  Eleftherios Spyromitros-Xioufis, Konstantinos Sechidis, Grigorios Tsoumakas, Ioannis Vlahavas
- LIRIS-Imagine at ImageCLEF 2011 Photo Annotation Task
  Ningning Liu, Emmanuel Dellandréa, Chao Zhu, Yu Zhang, Charles-Edmond, Bichot, Bruno Tellez, Stéphane Bres, Liming Chen
- Annotation and Retrieval System Using Confabulation Model for ImageCLEF2011 Photo Annotation
  Ryo Izawa, Naoki Motohashi, Tomohiro Takagi
- NII, Japan at ImageCLEF 2011 Photo Annotation Task
  Duy-Dinh Le, Shin'ichi Satoh
- The Joint Submission of the TU Berlin and Fraunhofer FIRST (TUBFI) to the ImageCLEF2011 Photo Annotation Task
  Alexander Binder, Wojciech Samek, Marius Kloft, Christina Müller, Klaus-Robert Müller, Motoaki Kawanabe
- CEA LIST's Participation to Visual Concept Detection Task of ImageCLEF 2011
  Amel Znaidia, Hervé Le Borgne, Adrian Popescu
- REGIMvid at ImageCLEF2011: Integrating Contextual Information to Enhance Photo Annotation and Concept-based Retrieval
  Amel Ksibi, Anis Ben Ammar, Chokri Ben Amar
- Semantic Contexts and Fisher Vectors for the ImageCLEF 2011 Photo Annotation Task
  Yu Su, Frédéric Jurie
- Sample Selection, Category Specific Features and Reasoning
  Eugene Mbanya, Sebastian Gerke, Christian Hentschel, Patrick Ndjiki-Nya
- SZTAKI @ ImageCLEF 2011
  Bálint Daróczy, Róbert Pethes, András A. Benczúr
- The University of Amsterdam's Concept Detection System at ImageCLEF 2011
  Koen E. A. van de Sande, Cees G. M. Snoek
- DAEDALUS at ImageCLEF 2011 Plant Identification Task: Using SIFT Keypoints for Object Detection
  Julio Villena-Román, Sara Lana-Serrano, José Carlos González-Cristóbal
- Participation of INRIA & Pl@ntNet to ImageCLEF 2011 Plant Images Classification Task
  Hervé Goëau, Alexis Joly, Itheri Yahiaoui, Pierre Bonnet, Elise Mouysset
- IFSC/USP at ImageCLEF 2011: Plant Identication Task
  Dalcimar Casanova, João Batista Florindo, Odemir Martinez Bruno
- Guiding Active Contours for Tree Leaf Segmentation and Identification
  Guillaume Cerutti, Laure Tougne, Julien Mille, Antoine Vacavant, Didier Coquin
- Sabanci-Okan System at ImageClef 2011: Plant Identification Task
  Berrin Yanikoglu, Erchan Aptoula, Caglar Tirkaz
- RMIT at ImageCLEF 2011 Plant Identification
  Rahayu A. Hamid, James A. Thom

### Cultural Heritage in CLEF

- CHiC 2011 - Cultural Heritage in CLEF: From Use Cases to Evaluation in Practice for Multilingual Information Access to Cultural Heritage
  Maria Gäde, Nicola Ferro, Monica Lestari Paramita
- Searching Digital Heritage: Putting IR Evaluation in Context
  Jaap Kamps
- User-centric Approaches to Annotating and Presenting the Audiovisual Memory of the Netherlands
  Johan Oomen
- Evaluation of Cultural Heritage Digital Collections: the DiLEO Perspective
  Giannis Tsakonas, Christos Papatheodorou

### Log File Analysis

- LogCLEF 2011 Multilingual Log File Analysis: Language Identification, Query Classification, and Success of a Query
  Giorgio Maria Di Nunzio, Johannes Leveling, Thomas Mandl
- DAEDALUS at LogCLEF 2011: Analyzing Query Success and User Context
  Sara Lana-Serrano, Julio Villena-Román, José Carlos González-Cristóbal
- Interface Language, User Language and Success Rates in the European Library
  Maria Gäde, Juliane Stiller, Richard Berendsen, Vivien Petras
- Adapting Statistical Language Identification Methods for Short Queries
  Alexandru-Lucian Gînsca, Emanuela Boros, Adrian Iftene
- University of Essex at LogCLEF 2011: Studying Query Refinement
  M-Dyaa Albakour, Udo Kruschwitz

### Music Information Retrieval

- Overview of MusiCLEF 2011
  Nicola Orio, David Rizo
- Music Identification Using Chroma Features
  Adrian Iftene, Andrei Rusu, Alexandra Leahu
- University of Padua at MusiCLEF 2011: Music Identification Task
  Emanuele Di Buccio, Nicola Montecchio, Nicola Orio

### Question Answering for Machine Reading Evaluation

- Overview of QA4MRE at CLEF 2011: Question Answering for Machine Reading Evaluation
  Anselmo Peñas, Eduard Hovy, Pamela Forner, álvaro Rodrigo, Richard Sutcliffe, Corina Forascu, Caroline Sporleder
- Overview of the QA4MRE Pilot Task: Annotating Modality and Negation for a Machine Reading Evaluation
  Roser Morante, Walter Daelemans
- Graph-based Word Clustering Applied to Question Answering and Reading Comprehension Tests
  Juan Martinez-Romo, Lourdes Araujo
- Question Answering for Machine Reading Evaluation on Romanian and English Languages
  Adrian Iftene, Alexandru-Lucian Gînsca, Alex Moruz, Diana Trandabat, Maria Husarciuc
- Cosine Similarity as Machine Reading Technique
  Gaurav Arora, Prasenjit Mazumder
- A Hybrid Question Answering System based on Information Retrieval and Answer Validation
  Partha Pakray, Pinaki Bhaskar, Somnath Banerjee, Bidhan Chandra Pal, Sivaji Bandyopadhyay, Alexander Gelbukh
- Retrieval-based Question Answering for Machine Reading Evaluation
  Suzan Verberne
- The LogAnswer Project at QA4MRE 2011
  Ingo Glöckner, Björn Pelzer, Tiansi Dong
- Dependency-Based Answer Validation for German
  Svitlana Babych, Alexander Henn, Jan Pawellek, Sebastian Padó
- Question Answering for Machine Reading with Lexical Chain
  Ling Cao, Xipeng Qiu, Xuanjing Huang
- The DI@UE's Participation in QA4MRE: from QA to Multiple Choice Challenge
  José Saias, Paulo Quaresma
- Text Mining in Biograph
  Walter Daelemans

### Retrieval in the Intellectual Property Domain

- CLEF-IP 2011: Retrieval in the Intellectual Property Domain
  Florina Piroi, Mihai Lupu, Allan Hanbury, Veronika Zenz
- Report on the CLEF-IP 2011 Experiments: Exploring Patent Summarization
  Parvaz Mahdabi, Linda Andersson, Allan Hanbury, Fabio Crestani
- Combining Document Representations for Prior-art Retrieval
  Eva D'hondt, Suzan Verberne, Wouter Alink, Roberto Cornacchia
- Exploring Keyphrase Extraction and IPC Classification Vectors for Prior Art Search
  Manisha Verma, Vasudeva Varma
- Does Patent IR Profit from Linguistics or Maximum Query Length?
  Daniela Becks, Maximilian Eibl, Julia Jürgens, Jens Kürsten, Thomas Wilhelm, Christa Womser-Hacker
- Patent Classification Experiments with the Linguistic Classification System LCS in CLEF-IP 2011
  Suzan Verberne, Eva D'hondt
- CLEF-IP 2011 Working Notes: Utilizing Prior Art Candidate Search Results for Refined IPC Classification
  Hyung-Kook Seo, Kyouyeol Han, Jaean Lee
- Classifying Patent Images
  Roland Mörzinger, Andras Horti, Georg Thallinger, Naeem Bhatti, Allan Hanbury
- XRCE's Participation at Patent Image Classification and Image-based Patent Retrieval Tasks of the Clef-IP 2011
  Gabriela Csurka, Jean-Michel Renders, Guillaume Jacquet

### Uncovering Plagiarism, Authorship and Social Software Misuse

- Overview of the 3rd International Competition on Plagiarism Detection
  Martin Potthast, Andreas Eiselt, Alberto Barrón-Cedeño, Benno Stein, Paolo Rosso
- Overview of the International Authorship Identification Competition at PAN-2011
  Shlomo Argamon, Patrick Juola
- Overview of the 2nd International Competition on Wikipedia Vandalism Detection
  Martin Potthast, Teresa Holfeld
- Approaches for Intrinsic and External Plagiarism Detection - Notebook for PAN at CLEF 2011
  Gabriel Oberreuter, Gaston L'Huillier, Sebastián A. Ríos, Juan D. Velásquez
- Improved Implementation for Finding Text Similarities in Large Sets of Data - Notebook for PAN at CLEF 2011
  Ján Grman, Rudolf Ravas
- The Encoplot Similarity Measure for Automatic Detection of Plagiarism - Notebook for PAN at CLEF 2011
  Cristian Grozea, Marius Popescu
- A High-performance Plagiarism Detection System - Notebook for PAN at CLEF 2011
  Neil Cooke, Lee Gillam, Peter Wrobel, Henry Cooke, Fahad Al-Obaidli
- Crosslingual CoReMo System (Contextual Reference Monotony) - Notebook for PAN at CLEF 2011
  Diego Antonio Rodríguez Torrejón, José Manuel Martín Ramos
- Rule Based Plagiarism Detection using Information Retrieval - Notebook for PAN at CLEF 2011
  Aniruddha Ghosh, Pinaki Bhaskar, Santanu Pal, Sivaji Bandyopadhyay
- External & Intrinsic Plagiarism Detection : VSM & Discourse Markers based Approach - Notebook for PAN at CLEF 2011
  Sameer Rao, Parth Gupta, Khushboo Singhal, Prasenjit Majumdar
- Using WordNet-based Semantic Similarity Measurement in External Plagiarism Detection - Notebook for PAN at CLEF 2011
  Yurii Palkovskii, Alexei Belov, Iryna Muzyka
- External Plagiarism Detection using Information Retrieval and Sequence Alignment - Notebook for PAN at CLEF 2011
  Rao Muhammad Adeel Nawab, Mark Stevenson, Paul Clough
- Intrinsic Plagiarism Detection Using Character Trigram Distance Scores - Notebook for PAN at CLEF 2011
  Mike Kestemont, Kim Luyckx, Walter Daelemans
- Using Clustering to Identify Outlier Chunks of Text - Notebook for PAN at CLEF 2011
  Navot Akiva
- A Multitude of Linguistically-rich Features for Authorship Attribution - Notebook for PAN at CLEF 2011
  Ludovic Tanguy, Assaf Urieli, Basilio Calderone, Nabil Hathout, Franck Sajous
- Author Identification Using Semi-supervised Learning - Notebook for PAN at CLEF 2011
  Ioannis Kourtis, Efstathios Stamatatos
- EPSMS and the Document Occurrence Representation for Authorship Identification - Notebook for PAN at CLEF 2011
  Hugo Jair Escalante
- Authorship Identification in Large Email Collections: Experiments Using Features that Belong to Different Linguistic Levels - Notebook for PAN at CLEF 2011
  George K. Mikros, Kostas Perifanos
- Vote/Veto Meta-Classifier for Authorship Identification - Notebook for PAN at CLEF 2011
  Roman Kern, Christin Seifert, Mario Zechner, Michael Granitzer
- Baseline Approaches for the Authorship Identification Task - Notebook for PAN at CLEF 2011
  Darnes Vilariño, Esteban Castillo, David Pinto, Saul León, Mireya Tovar
- Authorship Attribution of E-mail as a Multi-Class Task - Notebook for PAN at CLEF 2011
  Kim Luyckx
- Authorship Identification with Modality Specific Meta Features - Notebook for PAN at CLEF 2011
  Thamar Solorio, Sangita Pillay, Manuel Montes-y-Gómez
- Multilingual Vandalism Detection using Language-Independent & Ex Post Facto Evidence - Notebook for PAN at CLEF 2011
  Andrew G. West, Insup Lee
- Detecting Wikipedia Vandalism using Machine Learning - Notebook for PAN at CLEF 2011
  Cristian-Alexandru Dragusanu, Marina Cufliuc, Adrian Iftene
- An Empirical Research: “Wikipedia Vandalism Detection using VandalSense 2.0” Notebook for PAN at CLEF 2011
  F. Gediz Aksit

2014-08-11: submitted by Nicola Ferro
2014-08-24: published on CEUR-WS.org |valid HTML5|