no code implementations • 29 Mar 2021 • Rahul Sharma, Soumya Banerjee, Dootika Vats, Piyush Rai
We present a variational inference (VI) framework that unifies and leverages sequential Monte-Carlo (particle filtering) with \emph{approximate} rejection sampling to construct a flexible family of variational distributions.
no code implementations • 1 Jan 2021 • Rahul Sharma, Soumya Banerjee, Dootika Vats, Piyush Rai
Effective variational inference crucially depends on a flexible variational family of distributions.
1 code implementation • 8 Jul 2020 • Kushagra Gupta, Dootika Vats
We demonstrate that simply averaging covariance matrix estimators from multiple chains (average BM) can yield critical underestimates in small sample sizes, especially for slow mixing Markov chains.
Methodology Computation
2 code implementations • 24 Dec 2015 • Dootika Vats, James M. Flegal, Galin L. Jones
Markov chain Monte Carlo (MCMC) produces a correlated sample for estimating expectations with respect to a target distribution.
Statistics Theory Computation Statistics Theory