Search Results for author: Dootika Vats

Found 4 papers, 2 papers with code

Variational Rejection Particle Filtering

no code implementations29 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.

Variational Inference

Estimating Monte Carlo variance from multiple Markov chains

1 code implementation8 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

Multivariate Output Analysis for Markov chain Monte Carlo

2 code implementations24 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

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