Search Results for author: Bani K. Mallick

Found 10 papers, 2 papers with code

Generalized Regret Analysis of Thompson Sampling using Fractional Posteriors

no code implementations12 Sep 2023 Prateek Jaiswal, Debdeep Pati, Anirban Bhattacharya, Bani K. Mallick

Both the sub-Gaussian and exponential family models satisfy our general conditions on the reward distribution.

Thompson Sampling

An Active Learning-based Approach for Hosting Capacity Analysis in Distribution Systems

no code implementations13 May 2023 Kiyeob Lee, Peng Zhao, Anirban Bhattacharya, Bani K. Mallick, Le Xie

Hosting capacity analysis (HCA) examines the amount of DERs that can be safely integrated into the grid and is a challenging task in full generality because there are many possible integration of DERs in foresight.

Active Learning

Graphical Dirichlet Process for Clustering Non-Exchangeable Grouped Data

no code implementations17 Feb 2023 Arhit Chakrabarti, Yang Ni, Ellen Ruth A. Morris, Michael L. Salinas, Robert S. Chapkin, Bani K. Mallick

We consider the problem of clustering grouped data with possibly non-exchangeable groups whose dependencies can be characterized by a known directed acyclic graph.


Balance is Essence: Accelerating Sparse Training via Adaptive Gradient Correction

1 code implementation9 Jan 2023 Bowen Lei, Dongkuan Xu, Ruqi Zhang, Shuren He, Bani K. Mallick

To accelerate and stabilize the convergence of sparse training, we analyze the gradient changes and develop an adaptive gradient correction method.

Factorized Fusion Shrinkage for Dynamic Relational Data

no code implementations30 Sep 2022 Peng Zhao, Anirban Bhattacharya, Debdeep Pati, Bani K. Mallick

Comparing estimated latent factors involves both adjacent and long-term comparisons, with the time range of comparison considered as a variable.

Variational Inference

Structured Optimal Variational Inference for Dynamic Latent Space Models

no code implementations29 Sep 2022 Peng Zhao, Anirban Bhattacharya, Debdeep Pati, Bani K. Mallick

We consider a latent space model for dynamic networks, where our objective is to estimate the pairwise inner products of the latent positions.

Variational Inference

Tail-adaptive Bayesian shrinkage

no code implementations4 Jul 2020 Se Yoon Lee, Debdeep Pati, Bani K. Mallick

Under diverse sparsity regimes, the nature of signal detection is associated with a tail behaviour of a prior.

Estimation of COVID-19 spread curves integrating global data and borrowing information

no code implementations2 May 2020 Se Yoon Lee, Bowen Lei, Bani K. Mallick

In this paper, we propose a Bayesian hierarchical model that integrates global data for real-time prediction of infection trajectory for multiple countries.

Applications Methodology

Directionally Dependent Multi-View Clustering Using Copula Model

no code implementations17 Mar 2020 Kahkashan Afrin, Ashif S. Iquebal, Mostafa Karimi, Allyson Souris, Se Yoon Lee, Bani K. Mallick

Motivated by this, we propose a copula-based multi-view clustering model where a copula enables the model to accommodate the directional dependence existing in the datasets.


Fast sampling with Gaussian scale-mixture priors in high-dimensional regression

2 code implementations15 Jun 2015 Anirban Bhattacharya, Antik Chakraborty, Bani K. Mallick

We propose an efficient way to sample from a class of structured multivariate Gaussian distributions which routinely arise as conditional posteriors of model parameters that are assigned a conditionally Gaussian prior.


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