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20242026
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math.OC2026

Quantized Stochastic Primal-Dual Methods for Distributed Optimization under Relaxed Global Geometry

Susmit Sarkar, Abhinav Raghuvanshi, Kushal Chakrabarti +1

We study distributed optimization with stochastic gradients and finite-bit communication modeled by random (unbiased) quantization. We propose q-PDGD, a quantized stochastic primal…

math.OC2026

On a Gradient Approach to Chebyshev Center Problems with Applications to Function Learning

Abhinav Raghuvanshi, Mayank Baranwal, Debasish Chatterjee

We introduce , the first gradient-based optimization framework for solving Chebyshev center problems, a fundamental challenge in optimal function learning and geom…

math.OC2025

On Linear Convergence of Distributed Stochastic Bilevel Optimization over Undirected Networks via Gradient Aggregation

Ajay Tak, Mayank Baranwal

Many large-scale constrained optimization problems can be formulated as bilevel distributed optimization tasks over undirected networks, where agents collaborate to minimize a glob…

math.OC2024

On Linear Convergence of PI Consensus Algorithm under the Restricted Secant Inequality

Kushal Chakrabarti, Mayank Baranwal

This paper considers solving distributed optimization problems in peer-to-peer multi-agent networks. The network is synchronous and connected. By using the proportional-integral (P…

math.OC2024

Distributed Optimization via Energy Conservation Laws in Dilated Coordinates

Mayank Baranwal, Kushal Chakrabarti

Continuous-time models can reveal accelerated structures in distributed optimization, but their rates need not survive direct discretization. We introduce a second-order primal--du…