An Algorithm for Density Enrichment of Sparse Collaborative Filtering Datasets Using Robust Predictions as Derived Ratings.
Dionisis MargarisDimitris SpiliotopoulosGregory KaragiorgosCostas VassilakisPublished in: Algorithms (2020)
Keyphrases
- collaborative filtering
- learning algorithm
- recommendation algorithms
- dynamic programming
- preprocessing
- detection algorithm
- computational complexity
- synthetic datasets
- matching algorithm
- clustering method
- parameter tuning
- expectation maximization
- np hard
- cost function
- search space
- optimal solution
- objective function
- filtering algorithm
- genetic algorithm
- sparse matrix
- computationally efficient
- computational cost
- k means
- recommender systems