Search Results for author: Nabarun Deb

Found 5 papers, 1 papers with code

Trade-off Between Dependence and Complexity for Nonparametric Learning -- an Empirical Process Approach

no code implementations17 Jan 2024 Nabarun Deb, Debarghya Mukherjee

Our main result shows that a non-trivial trade-off between the complexity of the underlying function class and the dependence among the observations characterizes the learning rate in a large class of nonparametric problems.

Weather Forecasting

Wasserstein Mirror Gradient Flow as the limit of the Sinkhorn Algorithm

no code implementations31 Jul 2023 Nabarun Deb, Young-Heon Kim, Soumik Pal, Geoffrey Schiebinger

This limit, which we call the Sinkhorn flow, is an example of a Wasserstein mirror gradient flow, a concept we introduce here inspired by the well-known Euclidean mirror gradient flows.

Rates of Estimation of Optimal Transport Maps using Plug-in Estimators via Barycentric Projections

no code implementations NeurIPS 2021 Nabarun Deb, Promit Ghosal, Bodhisattva Sen

We illustrate the usefulness of this stability estimate by first providing rates of convergence for the natural discrete-discrete and semi-discrete estimators of optimal transport maps.

Detecting Structured Signals in Ising Models

no code implementations10 Dec 2020 Nabarun Deb, Rajarshi Mukherjee, Sumit Mukherjee, Ming Yuan

In this paper, we study the effect of dependence on detecting a class of signals in Ising models, where the signals are present in a structured way.

Probability Statistics Theory Statistics Theory 62G10, 62G20, 62C20

Two-component Mixture Model in the Presence of Covariates

1 code implementation18 Oct 2018 Nabarun Deb, Sujayam Saha, Adityanand Guntuboyina, Bodhisattva Sen

We propose a tuning parameter-free nonparametric maximum likelihood approach, implementable via the EM algorithm, to estimate the unknown parameters.

Methodology

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