Cross Entropy Approximation of Structured Gaussian Covariance Matrices.
Cheng-Yuan LiouBruce R. MusicusPublished in: IEEE Trans. Signal Process. (2008)
Keyphrases
- covariance matrices
- cross entropy
- maximum likelihood
- covariance matrix
- log likelihood
- gaussian distribution
- parameter estimation
- gaussian mixture model
- gaussian mixture
- closed form
- em algorithm
- vector space
- maximum a posteriori
- distance measure
- expectation maximization
- error function
- bayesian networks
- mixture model
- evaluation metrics
- language modeling
- hyperparameters
- linear classifiers
- objective function