Jinren Ni

CRISPR mapping unveils global prevalence of viral predators of Myxobacteria

Elevation-structured viral ecological strategies along glacier-fed rivers on the Qinghai-Tibet Plateau

The Qinghai-Tibet Plateau, a climate-vulnerable source of Asia’s major rivers, harbors underexplored viral communities critical to ecosystem functions. By integrating 597 metagenomes from the Yangtze, Yellow, Lancang, and Yarlung Tsangpo rivers with 85 public available glacial metagenomes (Tibetan Glacier Genome and Ge...

The Forgetting-Learning Trade-off: Making Reinforcement Learning Work for Protein Language Models

Diagnostics reveal that RL on PLMs is governed by two reward properties: verifiability, whether the reward is a fixed environment or a learned surrogate vulnerable to distribution shift, and coverage, the fraction of sequence space giving an informative gradient.

The Forgetting-Learning Trade-off: Making Reinforcement Learning Work for Protein Language Models

Reinforcement learning (RL) is increasingly applied to Protein Language Models (PLMs), yet its effectiveness varies across tasks, and standard metrics such as pass@k can rise even when the model's solvable problem set is shrinking. We introduce two capability-level diagnostics. The Expansion-Shrinkage Ratio (ESR) measu...