ISSN 1613‐0073 Copyright © 2013 for the individual papers by the papers' authors. Copying permitted only for private and academic purposes. Re‐publication of material from this volume requires permission by the copyright owners. Are There New BM25 Expectations?
Emanuele Di Buccio, Giorgio Maria Di Nunzio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The Bivariate 2-Poisson Model for IR
Giambattista Amati, Giorgio Gambosi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A Query Expansion Method based on a Weighted Word Pairs Approach
Luca Greco, Massimo De Santo, Paolo Napoletano, Francesco Colace . . . . . . . . . . . . . . . . A Flexible Extension of XQuery Full-Text
Emanuele Panzeri, Gabriella Pasi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Towards a Qualitative Analysis of Diff Algorithms
Gioele Barabucci, Paolo Ciancarini, Angelo Di Iorio, Fabio Vitali . . . . . . . . . . . . . . . . . . . . . On Suggesting Entities as Web Search Queries
Diego Ceccarelli, Sergiu Gordea, Claudio Lucchese, Franco Maria Nardini, Raffaele Perego
Visual Features Selection
Giuseppe Amato, Fabrizio Falchi, Claudio Gennaro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Experimenting a Visual Attention Model in the Context of CBIR Systems
Franco Alberto Cardillo, Giuseppe Amato, Fabrizio Falchi . . . . . . . . . . . . . . . . . . . . . . . . . . Cumulated Relative Position: A Metric for Ranking Evaluation
Marco Angelini, Nicola Ferro, Kalervo Järvelin, Heikki Keskustalo, Ari Pirkola, Giuseppe Santucci, Gianmaria Silvello . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visual Interactive Failure Analysis: Supporting Users in Information Retrieval Evaluation
Marco Angelini, Nicola Ferro, Giuseppe Santucci, Gianmaria Silvello . . . . . . . . . . . . . . . . . SOCIAL MEDIA AND INFORMATION RETRIEVAL
A Preliminary Study on a Recommender System for the Million Songs Dataset Challenge Fabio Aiolli . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SEMANTICS, NATURAL LANGUAGE AND APPLICATIONS
Distributional Semantics for Answer Re-ranking in Question Answering
Piero Molino, Pierpaolo Basile, Annalina Caputo, Pasquale Lops, Giovanni Semeraro . . . . . 88 100 104 The purpose of the Italian Information Retrieval (IIR) workshop series is to provide a forum for stimulating and disseminating research in information retrieval, where Italian researchers (especially young ones) and researchers affiliated with Italian institutions can network and discuss their research results in an informal way. IIR 2013 took place in Pisa, Italy, at the National Council of Research campus on January 16-17, 2013, following the first three successful editions in Padua (2010), Milan (2011) and Bari (2012). The contributions to IIR 2013 mainly address six relevant topics: theory query languages and operations image retrieval evaluation social media and information retrieval semantics, natural language and applications Most submitted papers were from PhD students and early stage researchers. All the 24 submissions, both full and short original papers presenting new research results, as well as extended abstracts containing descriptions of ongoing projects or presenting already published results, were reviewed by two members of the Program Committee and 18 contributions were selected for presentation on the basis of originality, technical depth, style of presentation, and impact. Additionally to the presentations of these 18 submitted papers, IIR 2013 featured two special events. The first was an invited talk by Renato Soru, CEO of Tiscali SpA, in which the speaker addressed past, present, and future efforts by Tiscali to enter the Web search market. In particular, Soru highlighted some new features of “istella”, the soon-to-be-announced Web search engine by Tiscali, mainly addressed at covering the Italian Web space, with a special emphasis on making Italy’s cultural heritage digitally available to a wide audience. The second special event was a panel on EVALITA, an evaluation campaign which has been running biennially since 2007 and whose main goal is the evaluation of natural language processing tools for Italian. Several EVALITA task organizers have presented the main results obtained in the recent editions of the campaign and have discussed the unresolved challenges that still lie ahead of researchers, with the aim of generating awareness about the state-of-the-art in Italian NLP among IR researchers and of strengthening the relationships between the two communities.
The present proceedings include the papers that were presented at IIR 2013. We hope they represent an interesting contribution to IR research in Italy, and to IR research in general.
University of Roma “Tor Vergata” (Program co-Chair)
ISTI-CNR (General Chair)
University of Bari Aldo Moro (Program co-Chair)