Discovery of path-important nodes using structured semi-nonnegative matrix factorization.
Shawn MankadGeorge MichailidisPublished in: CAMSAP (2013)
Keyphrases
- nonnegative matrix factorization
- shortest path
- probabilistic latent semantic indexing
- data representation
- matrix factorization
- active set
- negative matrix factorization
- least squares
- spectral clustering
- document clustering
- nonnegative matrix
- original data
- structured data
- sparsity constraints
- text mining
- principal component analysis
- knowledge discovery
- pairwise
- factor matrices
- data sets
- natural language processing
- pattern recognition
- objective function
- multiscale
- data mining