activity
20152023
most citedDiscrete Signal Processing on Graphs: Sampling Theory

693 citations · 892 across the 7 of their papers we have counts for

collaborators

9 papers

cs.DC2023★ 13 cited

PyTorch FSDP: Experiences on Scaling Fully Sharded Data Parallel

Yanli Zhao, Andrew Gu, Rohan Varma +15

It is widely acknowledged that large models have the potential to deliver superior performance across a broad range of domains. Despite the remarkable progress made in the field of…

cs.DC2020★ 117 cited

PyTorch Distributed: Experiences on Accelerating Data Parallel Training

Shen Li, Yanli Zhao, Rohan Varma +8

This paper presents the design, implementation, and evaluation of the PyTorch distributed data parallel module. PyTorch is a widely-adopted scientific computing package used in dee…

eess.SP2019★ 36 cited

Vector-Valued Graph Trend Filtering with Non-Convex Penalties

Rohan Varma, Harlin Lee, Jelena Kovačević +1

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. W…

cs.IT2018

Sampling Theory for Graph Signals on Product Graphs

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…

cs.AI2015★ 27 cited

Signal Representations on Graphs: Tools and Applications

Siheng Chen, Rohan Varma, Aarti Singh +1

We present a framework for representing and modeling data on graphs. Based on this framework, we study three typical classes of graph signals: smooth graph signals, piecewise-const…

cs.IT2015★ 6 cited

Signal Recovery on Graphs: Fundamental Limits of Sampling Strategies

Siheng Chen, Rohan Varma, Aarti Singh +1

This paper builds theoretical foundations for the recovery of a newly proposed class of smooth graph signals, approximately bandlimited graph signals, under three sampling strategi…