TY - CHAP
T1 - A case-based solution to the cold-start problem in group recommenders
AU - Quijano-Sánchez, Lara
AU - Bridge, Derek
AU - Díaz-Agudo, Belén
AU - Recio-García, Juan A.
PY - 2012
Y1 - 2012
N2 - We extend a group recommender system with a case base of previous group recommendation events. We show that this offers a potential solution to the cold-start problem. Suppose a group recommendation is sought but one of the group members is a new user who has few item ratings. We can copy ratings into this user's profile from the profile of the most similar user in the most similar group from the case base. In other words, we copy ratings from a user who played a similar role in some previous group event. We show that copying in this way, i.e. conditioned on groups, is superior to copying nothing and also superior to copying ratings from the most similar user known to the system.
AB - We extend a group recommender system with a case base of previous group recommendation events. We show that this offers a potential solution to the cold-start problem. Suppose a group recommendation is sought but one of the group members is a new user who has few item ratings. We can copy ratings into this user's profile from the profile of the most similar user in the most similar group from the case base. In other words, we copy ratings from a user who played a similar role in some previous group event. We show that copying in this way, i.e. conditioned on groups, is superior to copying nothing and also superior to copying ratings from the most similar user known to the system.
UR - https://www.scopus.com/pages/publications/84866660539
U2 - 10.1007/978-3-642-32986-9_26
DO - 10.1007/978-3-642-32986-9_26
M3 - Chapter
AN - SCOPUS:84866660539
SN - 9783642329852
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 342
EP - 356
BT - Case-Based Reasoning Research and Development - 20th International Conference, ICCBR 2012, Proceedings
T2 - 20th International Conference on Case-Based Reasoning, ICCBR 2012
Y2 - 3 September 2012 through 6 September 2012
ER -