A Matrix Factorization Algorithm for Efficient Recommendations in Social Rating Networks Using Constrained Optimization.
Nicholas AmpazisTheodoros EmmanouilidisFlora SakketouPublished in: Mach. Learn. Knowl. Extr. (2019)
Keyphrases
- constrained optimization
- social networks
- recommender systems
- constrained optimization problems
- objective function
- lagrange multipliers
- penalty function
- constraint handling
- augmented lagrangian
- social media
- inequality constraints
- unconstrained optimization
- neural network
- collaborative filtering
- computationally expensive
- user preferences
- least squares
- probabilistic model
- cost function