A Penalty Function for Computing Orthogonal Non-negative Matrix Factorizations.
Nicoletta Del BuonoPublished in: ISDA (2009)
Keyphrases
- penalty function
- matrix factorization
- constrained optimization
- penalty functions
- tensor factorization
- constraint handling
- constrained optimization problems
- objective function
- genetic algorithm
- collaborative filtering
- unconstrained optimization
- fitness function
- negative matrix factorization
- nonnegative matrix factorization
- recommender systems
- factorization methods
- data matrix
- low rank
- stochastic gradient descent
- matrix multiplication
- missing data
- genetic programming
- dimensionality reduction
- evolutionary algorithm
- particle swarm optimization