Ying Liu

SEP 10, 2026 · PREPRINT

The Last AI Built by Humans: Toward Genuine Recursive Self-Improvement

arXiv

This is a conceptual framework and research roadmap paper proposing recursive self-improvement in AI systems, with preliminary empirical evidence but no experimental validation of the core claims.

AUG 12, 2026 · PREPRINT

High-dimensional Multi-objective Bayesian Optimization with Learned Variable Interactions

arXiv

This is an unreviewed arXiv preprint presenting a novel computational method (ViaMOBO) with experimental validation on synthetic and real-world benchmarks, but lacking peer review and clinical or translational endpoints.

AUG 12, 2026 · PREPRINT

Rubric Dropout: A Simple Way to Mitigate Reward Hacking in Rubric-as-Reward RL

arXiv

This is a preprint describing an unblinded, single-model empirical study of a proposed mitigation method for reward hacking, lacking peer review, independent replication, or comparison to published baselines.

AUG 5, 2026 · JOURNAL ARTICLE

Safety, feasibility, and palliative benefit of HIFU combined with PD-1 inhibitors for elderly patients with advanced pancreatic cancer: a real-world retrospective study.

International Journal of Hyperthermia

Small retrospective single-center cohort (n=13) with no comparator arm; safety and pain relief are encouraging but survival outcomes are modest and evidence requires prospective validation.