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BIBE
2007
IEEE
108views Bioinformatics» more  BIBE 2007»
13 years 11 months ago
Using Parsimony to Guide Maximum Likelihood Searches
—The performance of maximum likelihood searches can be boosted by using the most parsimonious tree as a starting point for the search. The time spent in performing the parsimony ...
Kenneth Sundberg, Timothy O'Connor, Hyrum Carroll,...
IJCBDD
2008
113views more  IJCBDD 2008»
13 years 4 months ago
Parsimony accelerated Maximum Likelihood searches
: Phylogenetic search is a key tool used in a variety of biological research endeavors. However, this search problem is known to be computationally difficult, due to the astronomic...
Kenneth Sundberg, Timothy O'Connor, Hyrum Carroll,...
JMLR
2008
141views more  JMLR 2008»
13 years 4 months ago
Graphical Methods for Efficient Likelihood Inference in Gaussian Covariance Models
In graphical modelling, a bi-directed graph encodes marginal independences among random variables that are identified with the vertices of the graph. We show how to transform a bi...
Mathias Drton, Thomas S. Richardson
CSDA
2006
117views more  CSDA 2006»
13 years 4 months ago
Exact maximum likelihood estimation of structured or unit root multivariate time series models
TheexactlikelihoodfunctionofaGaussianvectorautoregressive-movingaverage(VARMA)model is evaluated in two nonstandard cases: (a) a parsimonious structured form, such as obtained in ...
Guy Mélard, Roch Roy, Abdessamad Saidi