Comparative Study of Various Approximations to the Covariance Matrix in Template Attacks.
Mathias WagnerYongbo HuChen ZhangYeyang ZhengPublished in: IACR Cryptol. ePrint Arch. (2016)
Keyphrases
- comparative study
- covariance matrix
- covariance matrices
- principal component analysis
- mahalanobis distance
- biometric template
- sample size
- matching algorithm
- geometrical interpretation
- eigenvalues and eigenvectors
- positive definite
- multivariate normal
- gaussian mixture
- eigendecomposition
- objective function
- pseudo inverse
- estimation error
- correlation matrix
- multivariate gaussian
- feature selection