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PRM MC Value Context: Solution Label Xprob (Stratified v1)

Solutions from a different problem in the same split are tagged correct or incorrect.

This repository is one arm of a five-way, row-matched process reward model ablation. The target is a Monte Carlo probability of eventual rollout success for a partial solution prefix; only the auxiliary context changes between arms.

Arm configuration

  • Context mode: solution_label
  • Cross-problem context: yes
  • Context correctness labels: yes
  • Split policy: deterministic difficulty-stratified v1
  • Split manifest SHA-256: c7287b917d3ee6eca482051c5256610b1b193e8f7bcd7800a28bfaed21351637

Cross-problem examples are selected within the query row's split. The held-out problems therefore do not leak into training context.

Splits

Split Rows Problems
train 50,447 6,879
validation 1,098 128
test 4,755 512

The local val.parquet artifact is published as validation.parquet. dataset_provenance.json, split_manifest.json, and verification.json record the build and five-arm integrity checks.

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