I am a postdoctoral scholar in the Department of Psychiatry at The University of
California at San Diego. 

I received my PhD from the Department of Biostatistics at Brown University in January
2012 under the direction of Dr. Hernando Ombao. I received my B.S. in mathematics at the
University of Houston. I also studied mathematics and statistics at the University of
Illinois at Urbana-Champaign. Before receiving my PhD, I spent six months at Technische
Universität Kaiserslautern in Kaiserslautern, Germany working with Prof. Jürgen Franke. 

My research focuses on the theoretical and methodological developments for analyzing
high-dimensional time series data, with special applications to neuroimaging data.
Neuroimaging experiments often require the analysis high-dimensional time series data,
and so statistical analyses of neuroimaging data must account for the curse of
dimensionality in the data in order to draw valid conclusions.

High-dimensional Time Series

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Spectral Density Shrinkage for High-dimensional Time Series (with Rainer von Sachs) (2013)

Time series data obtained from neurophysiological signals is often high-dimensional and the length of the...

 

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Shrinkage Estimation for Multivariate Hidden Markov Mixture Models (with Jürgen Franke, Rainer von Sachs, and Joseph Tadjuidje) (2012)

Motivated from a changing market environment over time, we consider high-dimensional data such as financial...

 

Functional Connectivity

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Quantifying Temporal Correlations: A Test-Retest Evaluation of Functional Connectivity in Resting-State fMRI (with Hernando Ombao, Dan van Lunen, Richard Baumgartner, Alexandre Coimbra, and Dai Feng), NeuroImage (2013)

There have been many interpretations of functional connectivity and proposed measures of temporal correlations between...

 

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The generalized shrinkage estimator for the analysis of functional connectivity of brain signals (with Hernando Ombao), The Annals of Applied Statistics (2011)

We develop a new statistical method for estimating functional connectivity between neurophysiological signals represented by...

 

Public Health

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A case-control study of physical activity patterns and risk of non-fatal myocardial infarction (with Jian Gong, Hannia Campos, Stephen McGarvey, Robert Goldberg, Caroline Richardson, and Ana Baylin), BMC Public Health (2013)

Background The interactive effects of different types of physical activity on cardiovascular disease (CVD) risk...