23 search results - page 3 / 5 » Parameter estimation for exponential sums by approximate Pro... |
CSDA
2007
13 years 4 months ago
2007
Many probabilistic models are only defined up to a normalization constant. This makes maximum likelihood estimation of the model parameters very difficult. Typically, one then h...
TSP
2010
12 years 11 months ago
2010
Consider the problem of estimating the parameters of multiple polynomial phase signals observed by a sensor array. In practice, it is difficult to maintain a precisely calibrated a...
CDC
2009
IEEE
13 years 9 months ago
2009
IEEE
— For the optimal approximation of multivariate Gaussian densities by means of Dirac mixtures, i.e., by means of a sum of weighted Dirac distributions on a continuous domain, a n...
CIMAGING
2009
13 years 5 months ago
2009
Owing to the stochastic nature of discrete processes such as photon counts in imaging, real-world data measurements often exhibit heteroscedastic behavior. In particular, time ser...
ICIP
2009
IEEE
14 years 5 months ago
2009
IEEE
This work presents a Log-stable model for natural images blockvariance. Exponential and halfnormal distributions have been previously used to model block-variance, but they were e...