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Ecole: A Gym-like Library for Machine Learning in Combinatorial Optimization Solvers

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arxiv 2011.06069 v2 pith:VL4T5GFC submitted 2020-11-11 cs.LG math.OC

classification cs.LGmath.OC
keywords ecolelibrarycombinatorialoptimizationdecisionlearningmachinesolvers
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We present Ecole, a new library to simplify machine learning research for combinatorial optimization. Ecole exposes several key decision tasks arising in general-purpose combinatorial optimization solvers as control problems over Markov decision processes. Its interface mimics the popular OpenAI Gym library and is both extensible and intuitive to use. We aim at making this library a standardized platform that will lower the bar of entry and accelerate innovation in the field. Documentation and code can be found at https://www.ecole.ai.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. GraphBU: MILP Instance Generation with Graph-Native Block Units

    cs.LG 2026-07 conditional novelty 6.0 of 10

    GraphBU generates MILP instances via graph-native block units that pair local subproblems with explicit coupling interfaces, achieving high structural similarity and feasibility preservation across four MILP families.

  2. ReviBranch: Deep Reinforcement Learning for Branch-and-Bound with Revived Trajectories

    cs.LG 2025-08 unverdicted novelty 4.0 of 10

    ReviBranch trains a reinforcement learning branching policy for MILP solvers on revived historical trajectories with densified rewards, reporting 4.0% fewer search nodes and 2.2% fewer LP iterations on large instances.

  3. STRCMP: Integrating Graph Structural Priors with Language Models for Combinatorial Optimization

    cs.LG 2025-05 reject novelty 4.0 of 10

    STRCMP's GNN-plus-LLM code search for MILP and SAT heuristics does not consistently beat AutoSAT in the paper's own reported numbers.

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