| Vol-896 urn:nbn:de:0074-896-3 Copyright © 2012 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.

# RecSysTEL-2012
Recommender Systems in Technology Enhanced Learning

### Proceedings of the 2nd Workshop on Recommender Systems in Technology Enhanced Learning 2012

#### in conjunction with the 7th European Conference on Technology Enhanced Learning (EC-TEL 2012)

### Saarbrücken, Germany, September 18-19, 2012.

Edited by

### Nikos Manouselis *
Hendrik Drachsler **
Katrien Verbert ***
Olga C. Santos ****

* Agro-Know Technologies and ARIADNE Foundation, Greece
** Open Universiteit Nederlands, Centre for Learning Sciences and Technologies, The Netherlands
*** KU Leuven, Belgium
**** aDeNu - Spanish National University for Distance Education - UNED, Spain

## Table of Contents

- Preface 1-6
  Nikos Manouselis, Hendrik Drachsler, Katrien Verbert, Olga C. Santos
- Linked Data as facilitator for TEL recommender systems in research and practice (keynote) 7-10
  Stefan Dietze
- Populating Learning Object Repositories with Hidden Internal Quality Information 11-22
  Cristian Cechinel, Sandro da Silva Camargo, Xavier Ochoa, Miguel-Angel Sicilia, Salvador Sanchez-Alonso
- Competency Comparison Relations for Recommendation in Technology Enhanced Learning Scenarios 23-34
  Gilbert Paquette, Delia Rogozan, Olga Marino
- Revisiting the Multi-Criteria Recommender System of a Learning Portal 35-48
  Nikos Manouselis, Giorgos Kyrgiazos, Giannis Stoitsis
- A Trust-based Social Recommender for Teachers 49-60
  Soude Fazeli, Hendrik Drachsler, Francis Brouns, Peter Sloep
- Sentiment Analysis: A tool for Rating Attribution to Content in Recommender Systems 61-70
  Antonis Koukourikos, Giannis Stoitsis, Pythagoras Karampiperis
- Affective issues in Semantic Educational Recommender Systems 71-82
  Olga C. Santos, Jesus G. Boticario
- A Framework for Cross-Platform Graph-based Recommendations for TEL (short paper) 83-88
  Mojisola Anjorin, Ivan Dackiewicz, Alejandro Fernandez, Christoph Rensing
- Using online presence data for recommending human resources in the OP4L project (short paper) 89-94
  Monique Grandbastien, Suzana Loskovska, Samuel Nowakowski, Jelena Jovanovic
- A Comparison of Usage Data Formats for Recommendations in TEL (short paper) 95-100
  Katja Niemann, Maren Scheffel, Martin Wolpers

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12-Sep-2012: submitted by Hendrik Drachsler
12-Sep-2012: published on CEUR-WS.org
14-Sep-2014: changed by Hendrik Drachsler