| Vol-1421 urn:nbn:de:0074-1421-3 Copyright © 2015 for the individual papers by the papers' authors. Copying permitted for private and academic purposes. This volume is published and copyrighted by its editors.

# SPS 2015
Social Personalisation & Search

### Proceedings of the International Workshop on Social Personalisation & Search
co-located with the 38th Annual ACM SIGIR Conference (SIGIR 2015)

### Santiago de Chile, Chile, August 9-13, 2015.

Edited by

### Christoph Trattner *
Denis Parra **
Peter Brusilovsky ***
Leandro Balby Marinho ****

* NTNU & Know-Center, Norway & Austria
** Pontificia Universidad Católica, Chile
*** University of Pittsburgh, USA
**** Federal University of Campina Grande, Brasil

## Table of Contents

- Preface
  Christoph Trattner, Denis Parra, Peter Brusilovsky, Leandro Balby Marinho

### Invited Talks

- Wisdom of Crowds or Wisdom of a Few? 1
  Ricardo Baeza-Yates
- Search from Personal to Social Context: Progress and Challenges 2
  Paul Bennett

### Presentations

- Improving Contextual Suggestions using Open Web Domain Knowledge 3-9
  Thaer Samar, Alejandro Bellogín, Arjen de Vries
- Finding Intermediary Topics Between People of Opposing Views: A Case Study 10-16
  Eduardo Graells-Garrido, Mounia Lalmas, Ricardo Baeza-Yates
- Analysis of Sentiment Communities in Online Networks 17-20
  Davide Feltoni Gurini, Fabio Gasparetti, Alessandro Micarelli, Giuseppe Sansonetti
- Retrieving Relevant Conversations for Q&A on Twitter 21-25
  Jose Miguel Herrera, Denis Parra, Barbara Poblete
- Persona-ization: Searching on Behalf of Others 26-32
  Paul Bennett, Emre Kiciman

The whole proceedings can also be downloaded as a single file (PDF, including title pages, preface, and table of contents).

2015-08-20: submitted by Christoph Trattner, metadata incl. bibliographic data published under Creative Commons CC0
2015-08-20: published on CEUR-WS.org |valid HTML5|