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J. Foerster

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#artificial intelligence Preprint Oct 2026

Q-Shaped Options for Hierarchical Reinforcement Learning

Learning to tackle long-horizon, goal-conditioned tasks requires an agent to reason over extended timescales and act across a broad range of states. In principle, Hierarchical Reinforcement Learning (HRL) addresses both challenges through the interaction between action (temporal) and state (spatial) abstraction. First,...

C. Wibault, Antoine Gorceix, Antonio León Villares et al. · 0 citations
#machine learning Review Mar 2026

Measuring Progress in Reasoning Toward Mathematical Discovery with Automatic Verification

HorizonMath, a benchmark of 113 predominantly unsolved problems spanning eight domains in mathematics and the mathematical sciences, paired with an open-source evaluation framework for automated verification, is introduced, identifying six novel solutions to research problems that either resolve previously open questio...

Erik Y. Wang, S. Motwani, J. Roggeveen et al. · 6 citations
#artificial intelligence Preprint Sep 2026

CivBench: A Long-Horizon Benchmark for Tool-Mediated Agents in Civilization VI

CivBench is presented, an open-source benchmark for evaluating language model agents in long-horizon, tool-mediated environments through the Model Context Protocol (MCP), and two interface-level metrics are introduced that the environment makes measurable: Proactive Monitoring Rate (PMR) and RAG@10, capturing whether c...

Austin Andrews, L. Wilkinson, Jamie Heagerty et al. · 0 citations

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