1 “... with mobile devices; methods for user studies; personalization and recommender systems; social networks...”

2 “... with mobile devices; methods for user studies; personalization and recommender systems; social networks...”

3 “... with mobile devices; methods for user studies; personalization and recommender systems; social networks...”

4 “... with mobile devices; methods for user studies; personalization and recommender systems; social networks...”

5 “... with mobile devices; methods for user studies; personalization and recommender systems; social networks...”