| Vol-1653 urn:nbn:de:0074-1653-7 Copyright © 2016 for the individual papers by the papers' authors. Copying permitted for private and academic purposes. This volume is published and copyrighted by its editors.

# IIR 2016
Italian Information Retrieval Workshop

### Proceedings of the 7th Italian Information Retrieval Workshop

### Venezia, Italy, May 30-31, 2016.

Edited by

### Giorgio Maria Di Nunzio (1)
Franco Maria Nardini (2)
Salvatore Orlando (3)

(1) Università di Padova, Italy
(2) Consiglio Nazionale delle Ricerche (CNR), Italy
(3) Università Ca’ Foscari Venezia

## Table of Contents

- Preface

### Session 1

- Understanding Human Mobility During Events in Foursquare
  Cristina Muntean, Franco Maria Nardini, Anastasios Noulas
- User-Item Group Formation with GroupFinder
  Chiara Renso, Jose Macedo, Franco Maria Nardini, Raffaele Perego, Igo Brilhante
- Searching and Ranking Activity-based Carpooling Ride
  Chiara Renso, Salvatore Rinzivillo, Valeria Cesario Times, Vinicius Monteiro de Lira, Raffaele Perego
- Computing Neighbourhoods with Language Models in a Collaborative Filtering Scenario
  Daniel Valcarce, Javier Parapar, Alvaro Barreiro
- A Review of Ten Year Research on Query Log Privacy
  Claudio Carpineto, Giovanni Romano

### Session 2

- Injecting Sentiment Information in Context-aware Convolutional Neural Networks
  Danilo Croce, Giuseppe Castellucci, Roberto Basili
- Combining Fisher Vector and Convolutional Neural Networks for Image Retrieval
  Giuseppe Amato, Fabrizio Falchi, Fausto Rabitti, Lucia Vadicamo
- Transductive Distributional Correspondence Indexing for Cross-Domain Topic Classification
  Alejandro Moreo Fernández, Andrea Esuli, Fabrizio Sebastiani
- A Game Theory Approach to Feature Selection for Text Classification
  Giorgio Maria Di Nunzio, Nicola Orio

### Session 3

- Google Web Searches and Wikipedia Results: A Measurement Study
  Vittoria Cozza, Van Tien Hoang, Marinella Petrocchi
- Crossword Puzzle Resolution in Italian using Distributional Models for Clue Similarity
  Massimo Nicosia, Alessandro Moschitti
- What-If Analysis: A Visual Analytics Approach to Information Retrieval Evaluation
  Marco Angelini, Nicola Ferro, Giuseppe Santucci, Gianmaria Silvello
- Basis of a Formal Framework for Information Retrieval Evaluation Measurements
  Nicola Ferro, Marco Ferrante, Maria Maistro
- Improving the Efficiency of Retrieval Effectiveness Evaluation: Finding a Few Good Topics with Clustering?
  Kevin Roitero, Stefano Mizzaro

### Session 4

- Speeding-up Document Scoring with Tree Ensembles using CPU SIMD Extensions
  Claudio Lucchese, Franco Maria Nardini, Salvatore Orlando, Raffaele Perego, Nicola Tonellotto, Rossano Venturini
- GPU-based Parallelization of QuickScorer to Speed-up Document Ranking with Tree Ensembles
  Francesco Lettich, Claudio Lucchese, Franco Maria Nardini, Salvatore Orlando, Raffaele Perego, Nicola Tonellotto, Rossano Venturini
- Post-Learning Optimization of Tree Ensembles
  Claudio Lucchese, Franco Maria Nardini, Salvatore Orlando, Raffaele Perego, Fabrizio Silvestri, Salvatore Trani
- Fast and Compact Hamming Distance index
  Simon Gog, Rossano Venturini
- Indexing 100M Images with Deep Features and MI-File
  Giuseppe Amato, Fabrizio Falchi, Claudio Gennaro, Fausto Rabitti
- Ask Me Any Rating: A Content-based Recommender System based on Recurrent Neural Networks
  Cataldo Musto, Claudio Greco, Alessandro Suglia, Giovanni Semeraro

### Session 5

- Automated Taxonomy Building by Adopting Discriminant and Characteristic Capabilities
  Giuliano Armano, Alessandro Giuliani, Emanuele Tamponi
- Web Information Foraging
  Yassine Drias, Gabriella Pasi
- Una Strategia di Ranking di Attività Commerciali Basata su User Generated Content
  Stefania Marrara, Gabriella Pasi, Simone Pellegrini
- Un Approccio per la Valutazione della Credibilità del Contenuto Generato dagli Utenti nei Siti di Recensioni
  Marco Viviani, Alessio Serafino, Gabriella Pasi
- Exploiting ERP Systems in Enterprise Search
  Diego Tosato

2016-08-05: submitted by Giorgio Maria Di Nunzio, metadata incl. bibliographic data published under Creative Commons CC0
2016-08-06: published on CEUR-WS.org |valid HTML5|