Convolutive Nonnegative Matrix Factorization with Markov Random Field Smoothing for Blind Unmixing of Multichannel Speech Recordings.
Rafal ZdunekPublished in: NOLISP (2011)
Keyphrases
- nonnegative matrix factorization
- markov random field
- single channel
- negative matrix factorization
- matrix factorization
- graph cuts
- data representation
- mrf model
- least squares
- pairwise
- image segmentation
- higher order
- maximum a posteriori
- spectral clustering
- random fields
- image restoration
- energy function
- document clustering
- speech signal
- principal component analysis
- objective function
- original data
- multiscale
- sparse representation
- machine learning
- clustering method
- image data
- information retrieval