Search Results for author: Dongdong Ge

Found 8 papers, 2 papers with code

A Homogenization Approach for Gradient-Dominated Stochastic Optimization

no code implementations21 Aug 2023 Jiyuan Tan, Chenyu Xue, Chuwen Zhang, Qi Deng, Dongdong Ge, Yinyu Ye

In this paper, we propose the stochastic homogeneous second-order descent method (SHSODM) for stochastic functions enjoying gradient dominance property based on a recently proposed homogenization approach.

Management Reinforcement Learning (RL) +2

Pre-trained Mixed Integer Optimization through Multi-variable Cardinality Branching

no code implementations21 May 2023 Yanguang Chen, Wenzhi Gao, Dongdong Ge, Yinyu Ye

We propose a new method to accelerate online Mixed Integer Optimization with Pre-trained machine learning models (PreMIO).

Learning Theory

Stochastic Dimension-reduced Second-order Methods for Policy Optimization

no code implementations28 Jan 2023 Jinsong Liu, Chenghan Xie, Qi Deng, Dongdong Ge, Yinyu Ye

In this paper, we propose several new stochastic second-order algorithms for policy optimization that only require gradient and Hessian-vector product in each iteration, making them computationally efficient and comparable to policy gradient methods.

Policy Gradient Methods Second-order methods

DRSOM: A Dimension Reduced Second-Order Method

3 code implementations30 Jul 2022 Chuwen Zhang, Dongdong Ge, Chang He, Bo Jiang, Yuntian Jiang, Yinyu Ye

In this paper, we propose a Dimension-Reduced Second-Order Method (DRSOM) for convex and nonconvex (unconstrained) optimization.

From an Interior Point to a Corner Point: Smart Crossover

1 code implementation18 Feb 2021 Dongdong Ge, Chengwenjian Wang, Zikai Xiong, Yinyu Ye

The crossover method, which aims at deriving an optimal extreme point from a suboptimal solution (the output of a starting method such as interior-point methods or first-order methods), is crucial in this process.

Optimization and Control 90C05

Uncertainty Quantification for Demand Prediction in Contextual Dynamic Pricing

no code implementations16 Mar 2020 Yining Wang, Xi Chen, Xiangyu Chang, Dongdong Ge

In this paper, using the problem of demand function prediction in dynamic pricing as the motivating example, we study the problem of constructing accurate confidence intervals for the demand function.

Management Uncertainty Quantification +1

Interior-Point Methods Strike Back: Solving the Wasserstein Barycenter Problem

no code implementations NeurIPS 2019 Dongdong Ge, Haoyue Wang, Zikai Xiong, Yinyu Ye

Computing the Wasserstein barycenter of a set of probability measures under the optimal transport metric can quickly become prohibitive for traditional second-order algorithms, such as interior-point methods, as the support size of the measures increases.

Cannot find the paper you are looking for? You can Submit a new open access paper.