The First AI4TSP Competition: Learning to Solve Stochastic Routing Problems
It introduces routing problems as a benchmark for AI researchers, with an open-source simulator for further development.
The paper reports on the first AI competition for solving a time-dependent orienteering problem with stochastic weights and time windows, focusing on learning approaches like surrogate-based optimization and deep reinforcement learning, with winning methods advancing the state-of-the-art in AI for stochastic routing problems.
This paper reports on the first international competition on AI for the traveling salesman problem (TSP) at the International Joint Conference on Artificial Intelligence 2021 (IJCAI-21). The TSP is one of the classical combinatorial optimization problems, with many variants inspired by real-world applications. This first competition asked the participants to develop algorithms to solve a time-dependent orienteering problem with stochastic weights and time windows (TD-OPSWTW). It focused on two types of learning approaches: surrogate-based optimization and deep reinforcement learning. In this paper, we describe the problem, the setup of the competition, the winning methods, and give an overview of the results. The winning methods described in this work have advanced the state-of-the-art in using AI for stochastic routing problems. Overall, by organizing this competition we have introduced routing problems as an interesting problem setting for AI researchers. The simulator of the problem has been made open-source and can be used by other researchers as a benchmark for new AI methods.