Beyond Learning on Molecules by Weakly Supervising on Molecules

• URL: http://arxiv.org/abs/2602.04696v1
• Date: Wed, 04 Feb 2026 16:03:20 GMT
• Title: Beyond Learning on Molecules by Weakly Supervising on Molecules
• Authors: Gordan Prastalo, Kevin Maik Jablonka,
• Abstract summary: Our Adaptive Chemical Embedding Model (ACE-Mol) learns from weak motifs labeled with.<n>natural language descriptors that are cheap to compute trivial to scale.<n>ACE-Mol achieves state-of-the-art performance across molecular property prediction benchmarks with interpretable, chemically meaningful representations.
• Score: 0.155963096715749
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Molecular representations are inherently task-dependent, yet most pre-trained molecular encoders are not. Task conditioning promises representations that reorganize based on task descriptions, but existing approaches rely on expensive labeled data. We show that weak supervision on programmatically derived molecular motifs is sufficient. Our Adaptive Chemical Embedding Model (ACE-Mol) learns from hundreds of motifs paired with natural language descriptors that are cheap to compute, trivial to scale. Conventional encoders slowly search the embedding space for task-relevant structure, whereas ACE-Mol immediately aligns its representations with the task. ACE-Mol achieves state-of-the-art performance across molecular property prediction benchmarks with interpretable, chemically meaningful representations.

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