Learned Pair Scorer — a ~557K-parameter CNN that scores (structure, label) box pairs from geometric features and visual crops (our own architecture, plain torch state_dict).

Pin a version with ChemPipeline(weights="v0.3").

Weights: Apache-2.0. Training data: synthetic pages rendered with RDKit from ChEMBL (CC-BY-SA-3.0) SMILES plus an internal annotated corpus (not released). See the package's THIRD_PARTY_NOTICES.md for upstream attributions.