Marc Suchard

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  Evolutionary Dynamics in Cancer Panel discussion led by Marc Suchard
  Marc Suchard
  Panel discussion led by Marc Suchard
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  High-dimensional Phenotypes on Evolutionary Trees: Efficient Algorithms and New Models
  Marc Suchard

  TBD

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  Many-Core Algorithms for Statistical Phylogenetics
  Marc Suchard
  Massive numerical integration plagues the statistical inference of partially observed stochastic processes. An important biological example entertains partially observed continuous-time Markov chains (CTMCs) to model molecular sequence evolution. Joint inference of phylogenetic trees and codon-based substitution models of sequence evolution remains computationally impractical. Parallelizing data likelihood calculations is an obvious strategy; however, across a cluster-computer, this scales with the total number of processing cores, incurring considerable cost to achieve reasonable run-time.
  
  To solve this problem, I describe many-core computing algorithms that harness inexpensive graphics processing units (GPUs) for calculation of the likelihood under CTMC models of evolution. High-end GPUs containing hundreds of cores and are low-cost. These novel algorithms are particularly efficient for large state-spaces, including codon models, and large data sets, such as full genome alignments where we demonstrate up to 150-fold speed-up. I conclude with a discussion of the future of many-core computing in statistics and touch upon recent experiences with massively large and high-dimensional mixture models.