Nikhil Mehta

I am a Ph.D. student at Duke University. My research area is deep learning and I am advised by Professor Lawrence Carin.

Prior to joining Duke, I spent 18 wonderful months at IIT Kanpur as a research associate working with Professor Piyush Rai and Professor Gaurav Pandey. I hail from the capital city of India, Delhi, where I received my bachelor's degree from the Delhi Technological University.

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Research

I'm interested in probabilistic deep learning with a focus on developing reliable and robust deep learning models for real-world settings.

Efficient Feature Transformations for Discriminative and Generative Incremental Learning
V. Verma, K. Liang, N. Mehta, P. Rai, & L. Carin
CVPR, 2021

A task-specific feature map transformation strategy for continual learning, which adds minimal parameters to the base architecture while outerperformaing previous methods in discriminative and generative tasks.

WAFFLe: Weight Anonymized Factors for Federated Learning
W. Hao, N. Mehta, K. Liang, P. Cheng, M. Khamy & L. Carin
arXiv, 2020

A Bayesian nonparametric framework using shared rank-1 weight factors for federated learning.

Bayesian Nonparametric Weight Factorization for Continual Learning with Neural Networks
N. Mehta, K. Liang, V. Verma, & L. Carin
AISTATS, 2021

Continual Learning using Bayesian Nonparametrics and layer-wise dictionary of weight factors.

Counterfactual Representation Learning with Balancing Weights
S. Assaad, S. Zeng, C. Tao, S. Datta, N. Mehta, R. Henao, F. Li, & L. Carin
AISTATS, 2021

Counterfactual Representation Learning with Balancing Weights

Graph Representation Learning via Ladder Gamma VAE.
A. Sarkar*, N. Mehta*, & P. Rai
AAAI, 2020. Early version appeared at Graph Representation Learning Workshop (NeurIPS).

A Gamma Ladder Variational Autoencoder for graph-structured data that brings together the interpretability in hierarchical, multilayer latent variable models and the strong representational power of graph encoders.

Stochastic Blockmodels meet Graph Neural Networks
N. Mehta, L. Carin & P. Rai
ICML, 2019

A deep generative framework for overlapping community discovery and link prediction combining the interpretability of stochastic blockmodels, such as the latent feature relational model, with the modeling power of deep generative models.

Estimation and Sampling of Unnormalized Statistical Models with Stein Score Matching
N. Mehta*, Jiachang Liu*, Chenyang Tao & L. Carin,
Workshop on Stein’s Method. ICML, 2019

We propose using Stein's Method to estimate the parameters of a distribution based on given samples. We also estimate the score function of the empirical distribution and propose a new generative model combining Stein score matching with the Langevin flow.

Deep Topic Models for Multi-Label Learning
R. Panda, A. Pensia, N. Mehta, M.Zhou & P. Rai
AISTATS, 2019

We present a probabilistic framework for multi-label learning based on a deep generative model for the binary label vector associated with each observation.

Survival Cluster Analysis
P. Chapfuwa, C. Li, N. Mehta, L. Carin and R. Henao
CHIL, 2019

A Bayesian nonparametric model for jointly inferring the time-to-event and the individualized risk-based cluster assignments.

Robust and Fast 3D Scan Alignment using Mutual Information
N. Mehta, J. McBride & G. Pandey
ICRA, 2018

A mutual information based algorithm for the estimation of full 6-degree-of-freedom (DOF) rigid body transformation between two overlapping point clouds.


Forked from Jon Barron's page.