Does LeWorldModel Preserve Local Action Geometry? Gram Matrix Analysis Says Barely
Vasil Vasilev · hf · 2026-10-26
Vasil Vasilev evaluates whether pretrained LeWorldModel reproduces small action effects by comparing Gram matrices across perturbation scales against environment references.
Findings: scale-dependent sensitivity differences and notably higher errors than environment references — the Reacher and Cube ellipse plots (DG = 0.464 / 0.507) show clear mismatch between model and environment geometry.
More from Research
- Exponential launches RepoInject and BrowserInject benchmarks for prompt injection robustness — maksym_andr · 2026-10-27
- Redwood: CoT controllability evals are under-elicited; better prompts boost scores 2-3x — dfrsrchtwts · 2026-10-27
- Inverse-designed optical system solves MNIST using BeamZ — S_Conradi · 2026-10-27
- DeCert supervises generative reward models' rationales without reference explanations — Guiquan Sun · 2026-10-27
- VLM harnesses act as compositional generalizers, new blog post shows — a1zhang · 2026-10-27
- Article proposes a Human Genome Project for AI interpretability — ninamiolane · 2026-10-27