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History / Review Dyna2

Revisions

  • DYNA-2: add detailed architecture, WAM comparison, and insights sections - Detailed model structure (mixture-of-transformers, hand-pose pseudo- actions, flow-matching co-training, mermaid diagram) with the key structural fact: video prediction is a co-training objective DROPPED at inference (action head never sees z_t) -> reactive real-time policy. - New 'How DYNA-2 differs from other WAMs' section: comparison table + three axes (data purity, world-model-at-inference reactive vs co-generate, fitted transfer law vs ablation) vs DreamZero/omega-0/ Cosmos-Policy/DreamGen/DreamDojo/EgoScale. - New 'Key insights' section (39/39 future-pred ablation, human-video vs teleop, free-at-inference world-modeling, threshold emergence, authors' own lower-bound/compute caveats). - Refined DYNA-2 entry in Review-World-Models to note reactive decoupling. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

    @Heungwoo Heungwoo committed Aug 11, 2026
  • DYNA-2: cite Dyna's own tech report as primary source; replace 'nothing disclosed' framing with actual figures Primary source corrected from PR-wire release to the company's technical writeup (dyna.co/dyna-2), which discloses architecture (mixture-of- transformers, flow matching), power-law fits with R², ablations, and per-task results. Rewrote the review + Latest-Papers row accordingly: real scaling fits (zero-shot robot MSE 0.306*D^-0.0713, R2=0.884), on-robot 20->28->45->53%, lockbox 0->90%, language 35->67->96%, 90x distillation. Caveat now: self-published, not peer-reviewed, no weights, model size undisclosed (was: 'no technical report, unverifiable'). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

    @Heungwoo Heungwoo committed Aug 11, 2026
  • Fix broken wikilinks in Review-Dyna2 §4 table (escape pipe -> \| for GitHub-wiki table cells) Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

    @Heungwoo Heungwoo committed Aug 11, 2026
  • Add DYNA-2 in-depth review (Dyna Robotics World-Action Model launch) Company announcement (Aug 10, 2026), not a paper: WAM on ~1M h human egocentric video with no robot data in pre-training, joint next-frame+ next-action, claimed first human-to-robot scaling law smooth over 1k->1M h (~50x EgoScale), 87% vs 46% zero-shot over DYNA-1. Reviewed with an explicit vendor-claim caveat (no technical paper/benchmark/ weights). Filed under Latest Papers; cross-linked from World-Models, Human-Video-Transfer, Reviews. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

    @Heungwoo Heungwoo committed Aug 11, 2026