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    "headline": "Molecules Became Valid by Grammar Construction",
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    "dek": "Higher-order production rules captured rings while remaining compatible with ordinary sequence models.",
    "summary": "Higher-order production rules captured rings while remaining compatible with ordinary sequence models.",
    "body_text": "Higher-order Grammar Representation lifts molecules into combinatorial complexes and serializes them as context-free production rules. On the new ring-enriched RingDiv benchmark and five generation tests, the authors report 100 percent validity by construction and leading distributional alignment; its foundation model also led mean AUC across seven MoleculeNet benchmarks under probing and full fine-tuning. The representation's advantage is benchmarked against the selected baselines and does not itself establish chemical usefulness or synthesizability.",
    "why_it_matters": "Higher-order production rules captured rings while remaining compatible with ordinary sequence models.",
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      "The representation's advantage is benchmarked against the selected baselines and does not itself establish chemical usefulness or synthesizability."
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    "first_published_at": "2026-10-02T09:00:00.000-04:00",
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    "tags": [
      "molecular generation",
      "grammars",
      "chemistry"
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    {
      "source_id": "source-2026-10-02-011",
      "title": "arXiv preprint 2610.02186",
      "publisher": "arXiv",
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      "published_at": "2026-10-01T13:58:45.000-04:00",
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