IntersectionQA Qwen3.5 4B SFT Artifacts

Final artifact upload from the 2026-04-25 Vast A100 run.

Primary usable adapter: final_adapter/.

Included artifacts:

• final_adapter/: focused continuation adapter after baseline checkpoint-300 plus 150 counterfactual/pairwise/ranking steps.
• evals/: base, baseline checkpoint-300, and final focused eval JSONs.
• metrics/: train and quality metric logs.
• checkpoints/baseline_checkpoint_300/: baseline adapter checkpoint at step 300.
• checkpoints/focused_checkpoint_150/: focused continuation checkpoint at step 150.
• artifacts/intersectionqa_final_artifacts_2026-04-25.tar: complete selected artifact bundle.

Headline focused eval on stratified sample:

• validation: 96.3%
• test_random: 94.4%
• test_near_boundary: 58.9%
• pairwise_interference: 90.6%
• ranking_normalized_intersection: 81.3%

Dataset: MRiabov/IntersectionQA-90K.