Hierarchical Itemspace Rank: Exploiting hierarchy to alleviate sparsity in ranking-based recommendation.
Athanasios N. NikolakopoulosMarianna A. KouneliJohn D. GarofalakisPublished in: Neurocomputing (2015)
Keyphrases
- hierarchical structure
- rank order
- ranked list
- rank aggregation
- highly ranked
- hierarchical organization
- ranking list
- collaborative filtering
- hierarchical structures
- ranking algorithm
- recommender systems
- high dimensional
- learning to rank
- mutual reinforcement
- ranking scheme
- web search
- ranking models
- data sparsity
- binary tree
- scoring function
- user feedback
- score function
- hierarchical tree
- concept hierarchy
- higher level
- page rank
- sparse representation
- hierarchically organized
- result list
- class hierarchy
- ranking functions
- hits algorithm
- implicit feedback
- tag recommendation
- topic hierarchy
- hierarchical decomposition
- user preferences
- loss function
- relevance scores