Shared Tasks

Important Dates

  • March 10, 2015: Early bird software submission
  • April 15, 2015: TIRA evaluation phase opens
  • May 24, 2015: TIRA evaluation phase deadline
  • June 07, 2015 (extended): Paper submission: [template] [guidelines] [submission]
  • July 24, 2015: Early bird conference registration
  • September 08-11, 2015: Conference

The timezone of all deadlines is Anywhere on Earth.


Tommaso Fornaciari
Deception detection in criminal analysis: from lie detector to stylometry
Italian National Police

To detect deception in communications is a difficult task for humans and a critical issue in police investigations. In fact, no specific signs of deception, such as the Pinocchio's growing nose, have never been clearly identified, even though several approaches have been developed in order to unmask liars and the false information they convey. The speech will examine the problem in the perspective of police practices, from collection to evaluation of testimonies. The contribution of different techniques and technologies for testimonies' analysis will be discussed, with particular focus on the role of the modern stylometry, as many studies in literature suggest that the discipline, which exploits computational methods in order to analyze samples of spoken and written language through their stylistic features, can be effectively employed in deception detection.

Tommaso Fornaciari is a Police Officer Psychologist of Italian National Police. Since 2003 he worked at the Forensic Science Police Service, dealing with crime scene analysis, behavioral analysis and investigative data analysis, mostly regarding bloody murders. With the purpose of supporting the analysis of testimonies, in 2009 he began to attend the PhD school of the Center for Mind/Brain Sciences - CIMeC of the University of Trento, where he carried out a research project in forensic linguistics (Ph.D. in Cognitive and Brain Sciences, 2012). In particular, he applied computational techniques in order to detect deception in transcripts of hearings held in Italian Courts. He is going ahead with research in deception detection and currently he works at the Italian Ministry of Interior, where he is engaged in research and technological innovation for public security.

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Walter Daelemans
Author Profiling in Practice
University of Antwerp

In this talk I will describe recent research within the CLiPS research centre on author profiling: the automatic assignment of demographic and psychological properties to (unknown) authors of text on the basis of linguistic analysis of these texts. I will describe different ways in which the results of this research are currently being applied. In the AMiCA project, the goal is to help moderators of social networks to detect harmful situations in their network. Our case studies concern cyberbullying, pedophile grooming, and suicide announcements. I wil show how profiling information can help achieve these tasks. In addition I will briefly demo the profiling system of Textgain, a spin-off company from CLiPS, and describe some of the applications in which their profiling web services are put to use.

Walter Daelemans (PhD in Computational Linguistics, 1987). Trained as a linguist and psycholinguist at the Universities of Antwerpen and Leuven, he specialized in computational linguistics and held research or teaching posts at the University of Nijmegen, the AI Lab of Vrije Universiteit Brussel, and Tilburg University. Since 1999 he is full professor at the University of Antwerp and research director of CLiPS. His main research interests are in machine learning of language, text analytics, computational stylometry, and computational psycholinguistics.

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PAN's program is part of the CLEF conference program.

September 8
11:00-13:00 Lab Overviews 1
30 min. talk Overview of the PAN/CLEF 2015 Evaluation Lab
Efstathios Stamatatos, Martin Potthast, Francisco Rangel, Paolo Rosso, and Benno Stein
13:00-14:00 Lunch
14:00-15:30 Lab Overviews 2
September 9
Keynotes, Chair: Paolo Rosso
08:30-09:30 Deception Detection in Criminal Analysis: From Lie Detector to Stylometry
Tommaso Fornaciari
09:30-10:30 Author Profiling in Practice
Walter Daelemans
10:30-11:00 Break + Posters
Author Identification, Chair: Efstathios Stamatatos
11:00-11:30 Overview of the Author Identification Task at PAN 2015
Efstathios Stamatatos, Walter Daelemans, Ben Verhoeven, Patrick Juola, Aurelio López López, Martin Potthast, and Benno Stein
11:30-11:50 Author Verification: Basic Stacked Generalization Applied To Predictions from a Set of Heterogeneous Learners
Erwan Moreau, Arun Jayapal, Gerard Lynch, and Carl Vogel
11:50-12:10 GLAD: Groningen Lightweight Authorship Detection
Manuela Hürlimann, Benno Weck, Esther van den Berg, Simon Šuster, and Malvina Nissim
12:10-12:30 Homotopy Based Classification for Author Verification Task
Josue Gutierrez, Jose Casillas, Paola Ledesma, Gibran Fuentes, and Ivan Meza
12:30-12:50 An Author Verification Approach Based on Differential Features
Alberto Bartoli, Alex Dagri, Andrea De Lorenzo, Eric Medvet, and Fabiano Tarlao
12:50-13:00 Discussion
13:00-14:00 Lunch + Posters
19:30 City Hall Welcome Reception
Poster Sessions
All participants are invited to present their work as a poster
September 10
10:00-12:00 CLEF Sessions Best of the Labs 2014
30 min. talk Adaptive Algorithm for Plagiarism Detection
Miguel A. Sánchez-Pérez, Alexander Gelbukh and Grigori Sidorov
12:00-13:30 Lunch
Author Profiling, Chair: Francisco Rangel
13:30-14:00 Overview of the 3rd Author Profiling Task at PAN 2015
Francisco Rangel, Fabio Celli, Paolo Rosso, Martin Potthast, Benno Stein, and Walter Daelemans
14:00 Award of appreciation for the overall best performing author profiling approach, sponsored by MeaningCloud.
14:00-14:20 INAOE's Participation at PAN'15: Author Profiling Task
Miguel A. Álvarez-Carmona, A. Pastor López-Monroy, Manuel Montes-y-Gómez, Luis Villaseñor-Pineda, and Hugo Jair Escalante
14:20-14:40 Tweets Classification Using Corpus Dependent Tags, Character and POS N-grams
Carlos E. González-Gallardo, Azucena Montes, Gerardo Sierra, J. Antonio Núñez-Juárez, Adolfo Jonathan Salinas-López, and Juan Ek
14:40-15:00 XRCE Personal Language Analytics Engine for Multilingual Author Profiling
Scott Nowson, Julien Perez, Caroline Brun, Shachar Mirkin, and Claude Roux
15:00-15:20 A Random Forest Approach for Authorship Profiling
Alonso Palomino-Garibay, Adolfo T. Camacho-González, Ricardo A. Fierro-Villaneda, Irazú Hernández-Farias, Davide Buscaldi, and Ivan V. Meza-Ruiz
15:20-15:30 Discussion
15:30-16:00 Break
Plagiarism Detection, Chair: Martin Potthast
16:00-16:30 Towards Data Submissions for Shared Tasks: First Experiences for the Task of Text Alignment
Martin Potthast, Steve Göring, Paolo Rosso, and Benno Stein
16:30-17:00 Joint Talk on 3 Data Submissions to Text Alignment and 1 Source Retrieval Algorithm
Habibollah Asghari, Khadijeh Khoshnava, Omid Fatemi, Heshaam Faili, Vahid Zarrabi, Salar Mohtaj, and Javad Rafiei
17:00-17:20 The Short Stories Corpus
Faisal Alvi, Mark Stevenson, and Paul Clough
17:20-17:40 Improving Synoptic Querying for Source Retrieval
Šimon Suchomel and Michal Brandejs.
17:40-18:00 Discussion
18:00-19:00 Concert
20:00 Conference Dinner
Poster Sessions
All participants are invited to present their work as a poster

Organizing Committee