G06N7005
Please help me predict the CPC LABEL for this patentPATENT ABSTRACT: Disclosed are MNAR data analysis methods and apparatuses for analyzing user preference data on products. Also, a product recommendation system using the same is disclosed. A data analysis method based on a binomial mixture model comprises defining a binomial mixture model based data generation model for analyzing user preference data on products; defining a missing data mechanism model for explaining observation and missing of user preference data on the products; learning the data generation model and the missing data mechanism model based on observed user preference data on the products; and determining final preferences on products whose preferences are missing based on the learned data generation model and the learned missing data mechanism model.