On Addressing the Low Rating Prediction Coverage in Sparse Datasets Using Virtual Ratings.
Dionisis MargarisDimitris SpiliotopoulosGregory KaragiorgosCostas VassilakisDionysios VasilopoulosPublished in: SN Comput. Sci. (2021)
Keyphrases
- rating prediction
- collaborative filtering
- sentiment analysis
- recommender systems
- matrix factorization
- social relations
- user ratings
- virtual world
- graph kernels
- virtual environment
- high dimensional
- customer reviews
- recommendation algorithms
- fully supervised
- machine learning
- personalized recommendation
- feature space
- sparse representation
- user profiles
- supervised learning