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The Experiment Planner Asked What Would Separate the Models

MDA combines LLM-proposed mechanisms with Bayesian inference and value-of-information experiment selection.

Published Updated Story ID: mp-2026-08-11-009
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Summary

MDA combines LLM-proposed mechanisms with Bayesian inference and value-of-information experiment selection.

The Model Discovery Agent proposes candidate causal structures, estimates their parameters and posterior probabilities, and chooses interventions expected to discriminate among them. Sequential Monte Carlo and simulation-based inference provide the numerical machinery; the language model supplies structural hypotheses. The goal is to learn mechanistic world models from fewer experiments. It remains a preprint framework: a plausible mechanism proposed efficiently is not the same as a confirmed causal explanation.

Why it matters

MDA combines LLM-proposed mechanisms with Bayesian inference and value-of-information experiment selection.

Limits and context

  • It remains a preprint framework: a plausible mechanism proposed efficiently is not the same as a confirmed causal explanation.

Key claims

  1. MDA combines LLM-proposed mechanisms with Bayesian inference and value-of-information experiment selection.

    Qualification: It remains a preprint framework: a plausible mechanism proposed efficiently is not the same as a confirmed causal explanation.

    Evidence: source-2026-08-11-009

Sources

  1. arXiv preprint 2608.09696arXiv · primary research

Corrections

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