The Effect of Sparsity on Collaborative Filtering Metrics.
Jesús BobadillaFrancisco SerradillaPublished in: ADC (2009)
Keyphrases
- collaborative filtering
- data sparsity
- recommender systems
- matrix factorization
- tensor factorization
- cold start problem
- high dimensional
- sparse representation
- user interests
- user item rating
- deal with information overload
- cross domain collaborative filtering
- recommendation quality
- error metrics
- data sets
- evaluation metrics
- user preferences
- search engine