CayleyPy RL: Pathfinding and Reinforcement Learning on Cayley Graphs
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2025
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| author | Chervov, A. Obozov, M. Soibelman, A. Lytkin, S. Kiselev, I. Fironov, S. Lukyanenko, A. Dolgorukova, A. Ogurtsov, A. Petrov, F. Krymskii, S. Evseev, M. Grunvald, L. Gorodkov, D. Antiufeev, G. Verbii, G. Zamkovoy, V. Cheldieva, L. Koltsov, I. Sychev, A. Eliseev, A. Nikolenko, S. Narynbaev, N. Turtayev, R. Rokotyan, N. Kovalev, S. Rozanov, A. Nelin, V. Ermilov, S. Shishina, L. Mamayeva, D. Korolkova, A. Khoruzhii, K. Romanov, A. |
| author_facet | Chervov, A. Obozov, M. Soibelman, A. Lytkin, S. Kiselev, I. Fironov, S. Lukyanenko, A. Dolgorukova, A. Ogurtsov, A. Petrov, F. Krymskii, S. Evseev, M. Grunvald, L. Gorodkov, D. Antiufeev, G. Verbii, G. Zamkovoy, V. Cheldieva, L. Koltsov, I. Sychev, A. Eliseev, A. Nikolenko, S. Narynbaev, N. Turtayev, R. Rokotyan, N. Kovalev, S. Rozanov, A. Nelin, V. Ermilov, S. Shishina, L. Mamayeva, D. Korolkova, A. Khoruzhii, K. Romanov, A. |
| contents | This paper is the second in a series of studies on developing efficient artificial intelligence-based approaches to pathfinding on extremely large graphs (e.g. $10^{70}$ nodes) with a focus on Cayley graphs and mathematical applications. The open-source CayleyPy project is a central component of our research. The present paper proposes a novel combination of a reinforcement learning approach with a more direct diffusion distance approach from the first paper. Our analysis includes benchmarking various choices for the key building blocks of the approach: architectures of the neural network, generators for the random walks and beam search pathfinding. We compared these methods against the classical computer algebra system GAP, demonstrating that they "overcome the GAP" for the considered examples. As a particular mathematical application we examine the Cayley graph of the symmetric group with cyclic shift and transposition generators. We provide strong support for the OEIS-A186783 conjecture that the diameter is equal to n(n-1)/2 by machine learning and mathematical methods. We identify the conjectured longest element and generate its decomposition of the desired length. We prove a diameter lower bound of n(n-1)/2-n/2 and an upper bound of n(n-1)/2+ 3n by presenting the algorithm with given complexity. We also present several conjectures motivated by numerical experiments, including observations on the central limit phenomenon (with growth approximated by a Gumbel distribution), the uniform distribution for the spectrum of the graph, and a numerical study of sorting networks. To stimulate crowdsourcing activity, we create challenges on the Kaggle platform and invite contributions to improve and benchmark approaches on Cayley graph pathfinding and other tasks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_18663 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | CayleyPy RL: Pathfinding and Reinforcement Learning on Cayley Graphs Chervov, A. Obozov, M. Soibelman, A. Lytkin, S. Kiselev, I. Fironov, S. Lukyanenko, A. Dolgorukova, A. Ogurtsov, A. Petrov, F. Krymskii, S. Evseev, M. Grunvald, L. Gorodkov, D. Antiufeev, G. Verbii, G. Zamkovoy, V. Cheldieva, L. Koltsov, I. Sychev, A. Eliseev, A. Nikolenko, S. Narynbaev, N. Turtayev, R. Rokotyan, N. Kovalev, S. Rozanov, A. Nelin, V. Ermilov, S. Shishina, L. Mamayeva, D. Korolkova, A. Khoruzhii, K. Romanov, A. Machine Learning Discrete Mathematics Social and Information Networks Combinatorics Group Theory This paper is the second in a series of studies on developing efficient artificial intelligence-based approaches to pathfinding on extremely large graphs (e.g. $10^{70}$ nodes) with a focus on Cayley graphs and mathematical applications. The open-source CayleyPy project is a central component of our research. The present paper proposes a novel combination of a reinforcement learning approach with a more direct diffusion distance approach from the first paper. Our analysis includes benchmarking various choices for the key building blocks of the approach: architectures of the neural network, generators for the random walks and beam search pathfinding. We compared these methods against the classical computer algebra system GAP, demonstrating that they "overcome the GAP" for the considered examples. As a particular mathematical application we examine the Cayley graph of the symmetric group with cyclic shift and transposition generators. We provide strong support for the OEIS-A186783 conjecture that the diameter is equal to n(n-1)/2 by machine learning and mathematical methods. We identify the conjectured longest element and generate its decomposition of the desired length. We prove a diameter lower bound of n(n-1)/2-n/2 and an upper bound of n(n-1)/2+ 3n by presenting the algorithm with given complexity. We also present several conjectures motivated by numerical experiments, including observations on the central limit phenomenon (with growth approximated by a Gumbel distribution), the uniform distribution for the spectrum of the graph, and a numerical study of sorting networks. To stimulate crowdsourcing activity, we create challenges on the Kaggle platform and invite contributions to improve and benchmark approaches on Cayley graph pathfinding and other tasks. |
| title | CayleyPy RL: Pathfinding and Reinforcement Learning on Cayley Graphs |
| topic | Machine Learning Discrete Mathematics Social and Information Networks Combinatorics Group Theory |
| url | https://arxiv.org/abs/2502.18663 |