arXiv Machine Learning

N(CO)$^2$: Neural Combinatorial Optimization with Chance Constraints to Solve Stochastic Orienteering

arXiv:2606. 18514v1 Announce Type: cross Abstract: Neural combinatorial optimization (NCO) offers a promising alternative to traditional heuristic-based methods for solving complex graph optimization problems by proposing to learn heuristics through data.

arXiv AI
Jul 7

Graph Neural Networks are Heuristics

arXiv:2601. 13465v4 Announce Type: replace Abstract: Graph neural networks are usually treated as auxiliaries for combinatorial optimization: they imitate algorithms, guide search, or supply scores to classical procedures.

By Yimeng Min, Carla P. Gomes
arXiv AI
Aug 20

Orienteering Problem with Uncertain Time-Varying Rewards: Framework and Benchmark for Everyday Service Robotics

The paper introduces the Orienteering Problem with Uncertain Time‑Varying Rewards (OP‑UTVR), a new variant of the classic orienteering problem that allows agents to estimate and forecast reward dynamics from observations. Three planners with different planning horizons and online adaptivity are proposed, and theoretical performance bounds under reward stochasticity are derived. A mobile service robot benchmark is presented, and experiments show trade‑offs between planning horizon and adaptivity, highlighting the benefits of long‑horizon planning with online adaptation.

By Masafumi Endo, Kohei Honda, Yuu Jinnai, Ryo Yonetani
arXiv Machine Learning
Sep 4

Learning Constraints-Based Adaptive Hypergraph Neural Networks for Solving Vehicle Routing Problems

The paper presents an end‑to‑end framework that uses constraint‑oriented hypergraphs and reinforcement learning to solve vehicle routing problems. It introduces a dynamic hyperedge reconstruction strategy for better hypergraph representation and a double‑pointer attention decoder for iterative solution generation. Experiments on benchmark datasets show that the method removes the need for complex heuristic operators while improving solution quality.

By Zhenwei Wang, Tiehua Zhang, Jing Liu, Heng Yu, Kaizhu Huang, Ruibin Bai