23 search results - page 3 / 5 » Parameter estimation for exponential sums by approximate Pro... |
CSDA
2007
14 years 11 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...
107
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TSP
2010
14 years 6 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
15 years 4 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...
108
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CIMAGING
2009
15 years 21 days 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
16 years 20 days 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...