Guangrui Xie – Medium

Guangrui Xie
in
Towards Data Science

Can ChatGPT solve knapsack problems?

Solving operations research (OR) problems with ChatGPT

10 min readSep 21, 2023

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Can ChatGPT solve knapsack problems?

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Guangrui Xie
in
Towards Data Science

Transformer Aided Supply Chain Network Design

Using transformer to help solve a classic problem in supply chain — facility location problem

15 min readFeb 17, 2023

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Transformer Aided Supply Chain Network Design

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Guangrui Xie
in
Towards Data Science

Reinforcement Learning for Inventory Optimization Series III: Sim-to-Real Transfer for the RL Model

Bridge the gap between the simulator and real world

8 min readJan 30, 2023

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Reinforcement Learning for Inventory Optimization Series III: Sim-to-Real Transfer for the RL Model

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Guangrui Xie
in
Towards Data Science

Reinforcement Learning for Inventory Optimization Series II: An RL Model for A Multi-Echelon…

Build a proximal policy optimization (PPO) model to optimize the inventory operations of a multi-echelon supply chain network

20 min readDec 30, 2022

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Reinforcement Learning for Inventory Optimization Series II: An RL Model for A Multi-Echelon…

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Guangrui Xie
in
Towards Data Science

Reinforcement Learning for Inventory Optimization Series I: An RL Model for Single Retailers

Build a Deep Q Network (DQN) model to optimize the inventory operations for a single retailer

17 min readDec 7, 2022

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Reinforcement Learning for Inventory Optimization Series I: An RL Model for Single Retailers

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Guangrui Xie
in
Towards Data Science

Some Thoughts on Synergies between Operations Research and Machine Learning

Build the bridge between Operations Research and Machine Learning

10 min readOct 23, 2022

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Some Thoughts on Synergies between Operations Research and Machine Learning

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Guangrui Xie

Guangrui Xie

A professional with background in both OR & ML. Always passionate in learning and sharing advances in OR & ML, and the synergies between the two fields.

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