Search Results for author: Changhyun Kwon

Found 7 papers, 3 papers with code

A Reinforcement Learning Approach for Rebalancing Electric Vehicle Sharing Systems

1 code implementation5 Oct 2020 Aigerim Bogyrbayeva, Sungwook Jang, Ankit Shah, Young Jae Jang, Changhyun Kwon

This paper proposes a reinforcement learning approach for nightly offline rebalancing operations in free-floating electric vehicle sharing systems (FFEVSS).

reinforcement-learning Reinforcement Learning (RL)

A Neural Separation Algorithm for the Rounded Capacity Inequalities

1 code implementation29 Jun 2023 Hyeonah Kim, Jinkyoo Park, Changhyun Kwon

We design a learning-based separation heuristic algorithm with graph coarsening that learns the solutions of the exact separation problem with a graph neural network (GNN), which is trained with small instances of 50 to 100 customers.

A Hybrid Genetic Algorithm with Type-Aware Chromosomes for Traveling Salesman Problems with Drone

no code implementations1 Mar 2023 Sasan Mahmoudinazlou, Changhyun Kwon

This study represents a hybrid genetic algorithm for solving TSPD and FSTSP by combining local search methods and dynamic programming.

Decision Making Traveling Salesman Problem

A Hybrid Genetic Algorithm for the min-max Multiple Traveling Salesman Problem

no code implementations14 Jul 2023 Sasan Mahmoudinazlou, Changhyun Kwon

This paper proposes a hybrid genetic algorithm for solving the Multiple Traveling Salesman Problem (mTSP) to minimize the length of the longest tour.

Traveling Salesman Problem

Genetic Algorithms with Neural Cost Predictor for Solving Hierarchical Vehicle Routing Problems

no code implementations22 Oct 2023 Abhay Sobhanan, Junyoung Park, Jinkyoo Park, Changhyun Kwon

For each higher-level decision candidate, we predict the objective function values of the underlying vehicle routing problems using a pre-trained graph neural network without actually solving the routing problems.

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