eprintid: 2840 rev_number: 7 eprint_status: archive userid: 69 dir: disk0/00/00/28/40 datestamp: 2015-11-06 11:01:14 lastmod: 2015-11-06 11:01:14 status_changed: 2015-11-06 11:01:14 type: article metadata_visibility: show creators_name: Wei, Dong creators_name: Zhou, Tao creators_name: Cimini, Giulio creators_name: Wu, Pei creators_name: Liu, Weiping creators_name: Zhang, Yi-Cheng creators_id: creators_id: creators_id: giulio.cimini@imtlucca.it creators_id: creators_id: creators_id: title: Effective mechanism for social recommendation of news ispublished: pub subjects: QC divisions: EIC full_text_status: public keywords: Adaptive networks abstract: Recommender systems represent an important tool for news distribution on the Internet. In this work we modify a recently proposed social recommendation model in order to deal with no explicit ratings of users on news. The model consists of a network of users which continually adapts in order to achieve an efficient news traffic. To optimize the network’s topology we propose different stochastic algorithms that are scalable with respect to the network’s size. Agent-based simulations reveal the features and the performance of these algorithms. To overcome the resultant drawbacks of each method we introduce two improved algorithms and show that they can optimize the network’s topology almost as fast and effectively as other not-scalable methods that make use of much more information. date: 2011 date_type: published publication: Physica A: Statistical Mechanics and its Applications volume: 390 number: 11 publisher: Elsevier pagerange: 2117 - 2126 id_number: 10.1016/j.physa.2011.02.005 refereed: TRUE issn: 0378-4371 official_url: http://www.sciencedirect.com/science/article/pii/S0378437111001130 citation: Wei, Dong and Zhou, Tao and Cimini, Giulio and Wu, Pei and Liu, Weiping and Zhang, Yi-Cheng Effective mechanism for social recommendation of news. Physica A: Statistical Mechanics and its Applications, 390 (11). 2117 - 2126. ISSN 0378-4371 (2011) document_url: http://eprints.imtlucca.it/2840/1/1103.5120v2.pdf