Improving rating estimation in recommender systems using aggregation- and variance-based hierarchical models.
Akhmed UmyarovAlexander TuzhilinPublished in: RecSys (2009)
Keyphrases
- recommender systems
- hierarchical models
- collaborative filtering
- hierarchical model
- user preferences
- collaborative filtering recommender systems
- hierarchical structures
- personalized recommendation
- user ratings
- netflix prize
- parameter estimation
- learning algorithm
- user profiles
- recommendation quality
- probabilistic model
- optical flow
- test collection
- recommendation systems
- prior knowledge
- image sequences
- search engine