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Rick Stevens

2 papers indexed

arxivcs.ROcs.AI2026-07-17

AEGIS: Assay-Aware Protocol Validation and Runtime Monitoring for Open-Source Liquid Handling Robots

Priyanka V. Setty, Arvind Ramanathan, Ian Foster, Rick Stevens

Self-driving laboratories increasingly rely on low-cost liquid handlers such as the Opentrons OT-2, which ship without the pressure-based aspiration monitoring of Hamilton or Tecan systems and are typically run open-loop. Two failure modes go undetected: protocols that are syntac…

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arxivcs.LGcs.AIq-bio.BMstat.ML2026-07-01

Active-GRPO: Adaptive Imitation and Self-Improving Reasoning for Molecular Optimization

Xuefeng Liu, Mingxuan Cao, Qinan Huang, Thomas Brettin, Rick Stevens, Le Cong

Scientific reasoning is an increasingly important capability of large language models, yet improving the robustness and efficiency of training such reasoning remains a key open challenge. We study this problem in instruction-based molecular optimization, where answer-only supervi…

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