presents
Veera Baladandayuthapani, Ph.D.
Department of BiostatisticsBayesian nonparametric functional models for high-dimensional genomics data
Abstract
Due to
rapid technological advances, various types of genomic, epigenomic, transcriptomic
and proteomic data with different sizes, formats, and structures have become
available. These experiments typically yield data consisting of high-resolution
genetic changes of hundreds/thousands of markers across the whole chromosomal
map.
Modeling and inference in such studies is challenging, not
only due to high dimensionality, but also due to presence of
structured dependencies
(e.g. serial and spatial correlations). Using genome continuum models as a
general principle we present a class of Bayesian methods to model these genomic
profiles using functional data analysis
approaches. Our methods allow for simultaneous characterization of these
high-dimensional functions using non-parametric basis functions, joint modeling
of spatially correlated functional data and detection of local features in
spatially heterogeneous functional data – to answer
several important biological questions. We
illustrate our methodology by using several real and simulated datasets
and propose methods to integrate various types of genomics data as well.
Friday, 9 November, 2012
3:00pm - 4:00pm
2203 SAS Hall