Incomplete-data Fisher scoring method with steplength adjustment

Image Reconstruction from Incomplete Data

Image Reconstruction from Incomplete Data

Incomplete Miller-Fisher Syndrome with Advanced Stage Burkitt Lymphoma.

BACKGROUND Lymphoma-associated incomplete Miller-Fisher syndrome is very rare. CASE CHARACTERISTICS An 11-year-old boy who initially presented with headache, left ptosis, diplopia and weakness. Neurologic examination indicated left sided ptosis with ophthalmoplegia. OBSERVATIONS Cerebral imaging and cerebrospinal fluid examinations were normal. Magnetic resonance imaging of the abdomen show...

The Variational Bayesian EM Algorithm for Incomplete Data: with Application to Scoring Graphical Model Structures

We present an efficient procedure for estimating the marginal likelihood of probabilistic models with latent variables or incomplete data. This method constructs and optimises a lower bound on the marginal likelihood using variational calculus, resulting in an iterative algorithm which generalises the EM algorithm by maintaining posterior distributions over both latent variables and parameters....

A Nonmonotone Second - Order Steplength Method for Unconstrained Minimization

In this paper, a nonmonotone method based on McCormick’s second-order Armijo’s step-size rule [7] for unconstrained optimization problems is proposed. Every limit point of the sequence generated by using this procedure is proved to be a stationary point with the second-order optimality conditions. Numerical tests on a set of standard test problems are presented and show that the new algorithm i...