TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES, vol.18, no.1, pp.101-116, 2010 (SCI-Expanded)
With the evolution of the Internet and e-commerce, collaborative filtering (CF) and privacy-preserving collaborative filtering (PPCF) have become popular The goal in CF is to generate predictions with decent accuracy, efficiently. The main issue in PPCF, however, is achieving such a goal while preserving users' privacy Many implementations of CF and PPCF techniques proposed so far are centralized In centralized systems, data is collected and Stored by a central server for CF purposes Centralized storage poses several hazards to Users because the central server controls users' data