| Vol-1066 urn:nbn:de:0074-1066-1 Copyright © 2013 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.

# RSWeb 2013
Recommender Systems and the Social Web

### Proceedings of the Fifth ACM RecSys Workshop on Recommender Systems and the Social Web
co-located with the 7th ACM Conference on Recommender Systems (RecSys 2013)

### Hong Kong, China, October 13, 2013.

Edited by

### Bamshad Mobasher*
Dietmar Jannach**
Werner Geyer****
Jill Freyne*****
Andreas Hotho******
Sarabjot Singh Anand*******
Ido Guy********

* DePaul University, USA
** TU Dortmund, Germany
*** IBM Research, USA
**** CSIRO ICT Center, Australia
***** University Würzburg, Germany
****** Algorithmic Insight, India
******* IBM Research, Israel

## Table of Contents

### Session 1: Leveraging the graph

- Improving Social Recommendations by applying a Personalized Item Clustering Policy
  Georgios Alexandridis, Giorgos Siolas, Andreas Stafylopatis
- Social Web Recommendation using Metapaths
  Robin Burke, Fatemeh Vahedian
- Recommendation of Shopping Places based on Social and Geographical Influences
  Romain Picot-Clemente, Cecile Bothorel

### Session: Users and Groups

- Structural Diversity in Social Recommender Systems
  Xinyi Huang, Mitul Tiwari, Sam Shah
- A Sentiment-Based Approach to Twitter User Recommendation (short paper)
  Davide Feltoni Gurini, Fabio Gasparetti, Alessandro Micarelli, Giuseppe Sansonetti
- Social Recommendations for Events (short paper)
  Toon De Pessemier, Jeroen Minnaert, Kris Vanhecke, Simon Dooms, Luc Martens
- On the Intrinsic Challenges of Group Recommendation (short paper)
  Nafiseh Shabib, Jon Atle Gulla, John Krogstie
- A Research Platform for Recommendation within Social Networks (demo)
  Amit Sharma

### Session: Invited talk

- Opinionated Product Recommendation: Mining User-Generated Reviews for Recommendation Knowledge
  Barry Smyth

### Session: Tags

- Tag Recommendations for SensorFolkSonomies
  Jürgen Müller, Stephan Dörfel, Martin Becker, Andreas Hotho, Gerd Stumme
- STRec: An Improved Graph-based Tag Recommender
  Modou Gueye, Talel Abdessalem, Hubert Naacke
- FoldCons: A Simple Way To Improve Tag Recommendation (short paper)
  Modou Gueye, Talel Abdessalem, Hubert Naacke

2013-10-24: submitted by Dietmar Jannach
2013-10-24: published on CEUR-WS.org |valid HTML5|