pith:B4C6YM3X
SpaceR: Reinforcing MLLMs in Video Spatial Reasoning
SpaceR uses RL with a map imagination step to lift open MLLMs above GPT-4o on video spatial reasoning.
arxiv:2504.01805 v2 · 2025-04-02 · cs.CV
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Claims
SpaceR surpasses the advanced GPT-4o by 11.6% accuracy on VSI-Bench and is on par with the leading proprietary model Gemini-2.0-Flash.
That the map imagination mechanism inside SG-RLVR genuinely improves spatial reasoning rather than merely increasing the chance of producing benchmark-correct answers during RL training.
SpaceR uses a new verifiable dataset and map-imagination-augmented RLVR to reach SOTA spatial reasoning accuracy in MLLMs, exceeding GPT-4o on VSI-Bench.
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| First computed | 2026-05-17T23:38:51.111830Z |
|---|---|
| Builder | pith-number-builder-2026-05-17-v1 |
| Signature | Pith Ed25519
(pith-v1-2026-05) · public key |
| Schema | pith-number/v1.0 |
Canonical hash
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Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/B4C6YM3XSS3A3KANRUD7FB4JRK \
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Canonical record JSON
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