Author

Yonggang Zhang

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Preprint Jul 2026

A Control Theory of Predictability in Latent World Models

It is proved that the planner's suboptimality is bounded by twice this discrepancy between the predicted and the true plan-cost at the plan the planner commits to, whereas the data-averaged prediction error neither bounds nor tracks it.

Hanzhe You, Yonggang Zhang, Maohao Ran et al. · 2 citations

Preprint Jul 2026

TTHE: Test-Time Harness Evolution

Test-Time Harness Evolution is introduced, which treats the executable harness as the state of test-time adaptation for LLM agents as evolution over executable control programs and identifies execution-derived proxy reliability as a central challenge for robust unsupervised agent improvement.

Jun Nie, Yonggang Zhang, Jun Song et al. · 2 citations