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Identifying the successive Blumenthal-Getoor indices of a discretely observed process
Semimartingale Brownian motion jumps finite activity infinite activity discrete sampling high frequency
2012/11/23
This paper studies the identification of the L\'{e}vy jump measure of a discretely-sampled semimartingale. We define successive Blumenthal-Getoor indices of jump activity, and show that the leading in...
Identifying outliers in Bayesian hierarchical models: a simulation-based approach
Hierarchical models diagnostics outliers distributional assumptions
2009/9/22
A variety of simulation-based techniques have been proposed for detec-
tion of divergent behaviour at each level of a hierarchical model. We investigate a
diagnostic test based on measuring the coni...
Identifying evolutionary trees and substitution parameters for the general Markov model with invariable sites
Phylogenetics invariable site model identifiability phylogenetic invariants
2010/4/27
The general Markov plus invariable sites (GM+I) model of biological sequence evolution
is a two-class model in which an unknown proportion of sites are not allowed
to change, while the remainder und...