Complexity reduction in context-dependent DNA substitution models.

Published

Journal Article

MOTIVATION: The modeling of conservation patterns in genomic DNA has become increasingly popular for a number of bioinformatic applications. While several systems developed to date incorporate context-dependence in their substitution models, the impact on computational complexity and generalization ability of the resulting higher order models invites the question of whether simpler approaches to context modeling might permit appreciable reductions in model complexity and computational cost, without sacrificing prediction accuracy. RESULTS: We formulate several alternative methods for context modeling based on windowed Bayesian networks, and compare their effects on both accuracy and computational complexity for the task of discriminating functionally distinct segments in vertebrate DNA. Our results show that substantial reductions in the complexity of both the model and the associated inference algorithm can be achieved without reducing predictive accuracy.

Full Text

Duke Authors

Cited Authors

  • Majoros, WH; Ohler, U

Published Date

  • January 15, 2009

Published In

Volume / Issue

  • 25 / 2

Start / End Page

  • 175 - 182

PubMed ID

  • 19017657

Pubmed Central ID

  • 19017657

Electronic International Standard Serial Number (EISSN)

  • 1367-4811

Digital Object Identifier (DOI)

  • 10.1093/bioinformatics/btn598

Language

  • eng

Conference Location

  • England