Covariance Matrices for Second-Order Vector Random Fields in Space and Time.
Chunsheng MaPublished in: IEEE Trans. Signal Process. (2011)
Keyphrases
- covariance matrices
- random fields
- vector space
- covariance matrix
- markov random field
- maximum likelihood
- non stationary
- feature vectors
- conditional random fields
- riemannian metric
- parameter estimation
- maximum entropy
- low dimensional
- probabilistic model
- distance measure
- higher order
- riemannian manifolds
- lie group
- gaussian mixture model
- gaussian distribution
- euclidean space
- multi class
- linear classifiers
- high dimensional
- feature selection