-nearest neighbors algorithm and densest imputation to collaborative filtering in recommender systems.
R. J. KuoCheng-Kang ChenShao-Hong KengPublished in: Inf. Sci. (2021)
Keyphrases
- collaborative filtering
- recommender systems
- detection algorithm
- nearest neighbor
- learning algorithm
- k means
- computational complexity
- similarity measure
- objective function
- nearest neighbor algorithm
- dynamic programming
- k nearest neighbor
- user preferences
- np hard
- training data
- expectation maximization
- feature space
- data sets
- probabilistic model
- distance function
- filtering algorithm
- recommendation algorithms
- data sparsity
- collaborative filtering algorithms