RT Book, Section T1 User satisfaction in long term group recommendations A1 Quijano Sánchez, Lara A1 Recio García, Juan Antonio A1 Díaz Agudo, María Belén AB In this paper we introduce our application HappyMovie, a Facebook application for movie recommendation to groups. This system takes advantage of social data available in this social network to promote fairness for the provided recommendations. Group recommendations are based in the individual satisfaction of each individual. The(in)satisfaction of users modifies the typical aggregation functions used to estimate the value of an item for the group. This paper proposes a memory of past recommendations to compute the satisfaction of users when similar items (movies, in this case) are recommended several times. PB Springer-Verlag Berlín SN 978-3-642-23290-9 YR 2011 FD 2011 LK https://hdl.handle.net/20.500.14352/45403 UL https://hdl.handle.net/20.500.14352/45403 LA eng NO © Springer Verlag Berlin Heidelberg 2011. International Conference on Case-Based Reasoning (19th. Sep 11-14, 2011. London, England). Supported by Spanish Ministry of Science & Education(TIN2009-13692-C03-03) and Madrid Education Council and UCM (Group910494). NO Spanish Ministry of Science & Education NO Madrid Education Council NO UCM DS Docta Complutense RD 12 abr 2025