ResearchResearch paperEfficiency & Inference1 source · Oct 8, 2026

Beyond Action Entropy: Quotient-Space Exploration for Genome-Scale Metabolic Model Repair

We introduce QuotientPO, which collapses equivalent repairs into canonical mechanisms and optimizes exploration directly over the resulting quotient space.

Key points

  • Repairing scientific models from functional observations differs fundamentally from supervised prediction: feedback may certify a solution without revealing which structural correction is responsible.
  • We study this setting for genome-scale metabolic model (GEM) repair, where multiple reaction edits can explain the same phenotypes and many apparently distinct edits correspond to the same biological mechanism.
  • To make quotient exploration informative under finite rollouts, we derive a kernelized Rényi estimator that resolves graded crowding among distinct repair cores beyond coarse exact-match counts.
  • These results establish quotient-space exploration as a principled approach to mechanism-level discovery under verifier-induced equivalence.

Sources (1)

  • [1]Beyond Action Entropy: Quotient-Space Exploration for Genome-Scale Metabolic Model Repair
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 8, 10:05 AM
    We introduce QuotientPO, which collapses equivalent repairs into canonical mechanisms and optimizes exploration directly over the resulting quotient space.
    Repairing scientific models from functional observations differs fundamentally from supervised prediction: feedback may certify a solution without revealing which structural correction is responsible.

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