Search Results for author: Rohan Varma

Found 7 papers, 3 papers with code

PyTorch Distributed: Experiences on Accelerating Data Parallel Training

3 code implementations28 Jun 2020 Shen Li, Yanli Zhao, Rohan Varma, Omkar Salpekar, Pieter Noordhuis, Teng Li, Adam Paszke, Jeff Smith, Brian Vaughan, Pritam Damania, Soumith Chintala

This paper presents the design, implementation, and evaluation of the PyTorch distributed data parallel module.

Vector-Valued Graph Trend Filtering with Non-Convex Penalties

1 code implementation29 May 2019 Rohan Varma, Harlin Lee, Jelena Kovačević, Yuejie Chi

This work studies the denoising of piecewise smooth graph signals that exhibit inhomogeneous levels of smoothness over a graph, where the value at each node can be vector-valued.

Denoising Event Detection +1

Sampling Theory for Graph Signals on Product Graphs

1 code implementation26 Sep 2018 Rohan Varma, Jelena Kovačević

In this paper, we extend the sampling theory on graphs by constructing a framework that exploits the structure in product graphs for efficient sampling and recovery of bandlimited graph signals that lie on them.

Signal Representations on Graphs: Tools and Applications

no code implementations16 Dec 2015 Siheng Chen, Rohan Varma, Aarti Singh, Jelena Kovačević

For each class, we provide an explicit definition of the graph signals and construct a corresponding graph dictionary with desirable properties.

A statistical perspective of sampling scores for linear regression

no code implementations21 Jul 2015 Siheng Chen, Rohan Varma, Aarti Singh, Jelena Kovačević

In this paper, we consider a statistical problem of learning a linear model from noisy samples.

regression

Signal Recovery on Graphs: Random versus Experimentally Designed Sampling

no code implementations21 Apr 2015 Siheng Chen, Rohan Varma, Aarti Singh, Jelena Kovačević

We study signal recovery on graphs based on two sampling strategies: random sampling and experimentally designed sampling.

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