I am a Biostatistics PhD candidate at the Johns Hopkins Bloomberg School of Public Health, working with Aki Nishimura on Markov Chain Monte Carlo methods for high dimensional data.

Previously, I was a software engineer with the Delphi Group in the Carnegie Mellon Machine Learning Department, building pipelines and tools for COVID-19 surveillance and forecasting. Before that, I worked in industry as a product manager and software engineer at Datavant.

I received my Bachelor's and Master's degrees in statistics from UC Davis, where I studied large scale network data under James Sharpnack.

Research

Bouncy Hamiltonian samplers: A unifying framework for Hamiltonian Monte Carlo and piecewise deterministic processes
A. Chin, A. Nishimura
In progress

hdtg: An R package for high-dimensional truncated normal simulation
Z. Zhang, A. Chin, A. Nishimura, M. A. Suchard
arXiv | Preprint

Real-time estimation of Covid-19 infections: Deconvolution and sensor fusion
M. Jahja, A. Chin, R. J. Tibshirani
Statistical Science | 2022

An open repository of real-time COVID-19 indicators
A. Reinhart, [et al., including A. Chin]
Proceedings of the National Academy of Sciences | 2021

Code

bayesbridge
Python package for Bayesian Sparse Regression.
Added GPU support and implementing additional sampling algorithms.
github | PyPI

hdtg
R package for sampling from high-dimensional truncated normal distributions.
Implemented Exact HMC algorithm of Pakman and Paninski in C++/Rcpp.
github | CRAN

covidcast
R and Python packages for accessing and visualizing COVIDcast data.
Core contributor and maintainer from 2020-2021.
github | PyPI | CRAN

Teaching

Advanced Statistical Computing
Teaching Assistant
JHU Bloomberg School of Public Health | 3rd Term 23-24

Statistical Methods in Public Health
Teaching Assistant
JHU Bloomberg School of Public Health | 4th Term 22-23, 1st Term 23-24, 2nd Term 23-24

Statistical Computing, Algorithm, and Software Development
Teaching Assistant
JHU Bloomberg School of Public Health | 3rd Term 22-23, 3rd Term 23-24

Real Analysis I
Teaching Assistant
JHU Whiting School of Engineering | Fall Term 22-23