Covariance Matrix Estimation for the Cryo-EM Heterogeneity Problem.
Gene KatsevichAlexander KatsevichAmit SingerPublished in: CoRR (2013)
Keyphrases
- covariance matrix
- estimation error
- gaussian mixture
- covariance matrices
- principal component analysis
- sample size
- mahalanobis distance
- geometrical interpretation
- unsupervised learning
- positive definite
- pseudo inverse
- maximum likelihood
- eigenvalues and eigenvectors
- parameter estimation
- expectation maximization
- correlation matrix
- image segmentation
- multivariate gaussian
- electron microscopy
- cma es
- class conditional densities
- eigendecomposition
- density estimation
- maximum likelihood estimation
- transformation matrix
- em algorithm
- probability distribution
- probabilistic model
- objective function
- similarity measure
- image processing
- mahalanobis metric