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Reinforcement learning (RL) enables adaptive behavior across species via reward prediction errors (RPEs), but the neural origins of species-specific adaptability remain unknown. Integrating RL modeling, transcriptomics, and neuroimaging…

Neurons and Cognition · Quantitative Biology 2025-12-12 Tian Sang , Yichun Huang , Fangwei Zhong , Miao Wang , Shiqi Yu , Jiahui Li , Yuanjing Feng , Yizhou Wang , Kwok Sze Chai , Ravi S. Menon , Meiyun Wang , Fang Fang , Zheng Wang

Developing new drugs is laborious and costly, demanding extensive time investment. In this paper, we introduce a de-novo drug design strategy, which harnesses the capabilities of language models to devise targeted drugs for specific…

Biomolecules · Quantitative Biology 2025-05-20 Salma J. Ahmed , Emad A. Mohammed

Hyperparameter optimization (HPO) plays a critical role in improving model performance. Transformer-based HPO methods have shown great potential; however, existing approaches rely heavily on large-scale historical optimization trajectories…

Machine Learning · Computer Science 2025-09-23 Haoxin Guo , Jiawen Pan , Weixin Zhai

Differentiable reinforcement learning (RL) frameworks like DiffRO offer a powerful approach for controllable text-to-speech (TTS), but are vulnerable to reward hacking, particularly for nuanced tasks like emotion control. The policy model…

Sound · Computer Science 2026-02-17 Cong Wang , Changfeng Gao , Yang Xiang , Zhihao Du , Keyu An , Han Zhao , Qian Chen , Xiangang Li , Yingming Gao , Ya Li

We introduce CPPO, a Contrastive Perception Policy Optimization method for finetuning vision--language models (VLMs). Reliable perception is a core requirement for VLM-based agents that must reason and act in open-ended environments: faulty…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Ahmad Rezaei , Mohsen Gholami , Saeed Ranjbar Alvar , Kevin Cannons , Mohammad Asiful Hossain , Zhou Weimin , Yong Zhang , Mohammad Akbari

Reinforcement learning (RL) can be formulated as a sequence modeling problem, where models predict future actions based on historical state-action-reward sequences. Current approaches typically require long trajectory sequences to model the…

Machine Learning · Computer Science 2024-12-23 Hemant Kumawat , Saibal Mukhopadhyay

Text-to-Image (T2I) generation has achieved remarkable progress in recent years. Meanwhile, reinforcement learning methods, particularly those based on Group Relative Policy Optimization (GRPO), have attracted widespread attention and been…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Baoteng Li , Xianghao Zang , Xinran Wang , Xiangyu Na , Zhixiang He , Hao Sun , Chi Zhang , Zhongjiang He , Tianwei Cao , Kongming Liang , Zhanyu Ma

Traditional Chinese Medicine (TCM) presents a rich and structurally unique knowledge system that challenges conventional applications of large language models (LLMs). Although previous TCM-specific LLMs have shown progress through…

Computation and Language · Computer Science 2025-10-21 Jiacheng Xie , Shuai Zeng , Yang Yu , Xiaoting Tang , Guanghui An , Dong Xu

Reinforcement learning (RL) has been recognized as a powerful tool for robot control tasks. RL typically employs reward functions to define task objectives and guide agent learning. However, since the reward function serves the dual purpose…

Machine Learning · Computer Science 2025-12-10 Zhao Yu , Xiuping Wu , Liangjun Ke

Many organisms and cell types, from bacteria to cancer cells, exhibit a remarkable ability to adapt to fluctuating environments. Additionally, cells can leverage a memory of past environments to better survive previously-encountered…

Machine Learning · Computer Science 2025-01-29 Josiah C. Kratz , Jacob Adamczyk

Protein representation learning is critical in various tasks in biology, such as drug design and protein structure or function prediction, which has primarily benefited from protein language models and graph neural networks. These models…

Biomolecules · Quantitative Biology 2024-02-16 Bozhen Hu , Zelin Zang , Cheng Tan , Stan Z. Li

A reliable reward function is essential for reinforcement learning (RL) in image generation. Most current RL approaches depend on pre-trained preference models that output scalar rewards to approximate human preferences. However, these…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Weijia Mao , Hao Chen , Zhenheng Yang , Mike Zheng Shou

Cellular decision-making based on information received from the external environment is frequently initiated by transmembrane receptors. These receptors are known to propagate such information by triggering a series of irreversible,…

Biological Physics · Physics 2026-05-13 Samuel L. Foley , Margaret E. Johnson

Autonomous spacecraft control for mission phases such as launch, ascent, stage separation, and orbit insertion remains a critical challenge due to the need for adaptive policies that generalize across dynamically distinct regimes. While…

Machine Learning · Computer Science 2025-11-17 Amit Jain , Victor Rodriguez-Fernandez , Richard Linares

The successful operation of mobile robots requires them to adapt rapidly to environmental changes. To develop an adaptive decision-making tool for mobile robots, we propose a novel algorithm that combines meta-reinforcement learning…

Robotics · Computer Science 2022-07-21 Jaeuk Shin , Astghik Hakobyan , Mingyu Park , Yeoneung Kim , Gihun Kim , Insoon Yang

Developments in reinforcement learning (RL) have allowed algorithms to achieve impressive performance in highly complex, but largely static problems. In contrast, biological learning seems to value efficiency of adaptation to a…

Artificial Intelligence · Computer Science 2022-05-20 Eric Chalmers , Artur Luczak

Trust Region Policy Optimization (TRPO) and Proximal Policy Optimization (PPO) are among the most successful policy gradient approaches in deep reinforcement learning (RL). While these methods achieve state-of-the-art performance across a…

Machine Learning · Computer Science 2020-06-22 Ahmed Touati , Amy Zhang , Joelle Pineau , Pascal Vincent

Sampling-based model predictive control (MPC) has found significant success in optimal control problems with non-smooth system dynamics and cost function. Many machine learning-based works proposed to improve MPC by a) learning or…

Machine Learning · Computer Science 2024-01-08 Sungwook Yang , Chaoying Pei , Ran Dai , Chuangchuang Sun

Chimeric Antigen Receptor (CAR) T cell therapy has transformed immunotherapy for resistant cancers, yet it faces major limitations such as lack of persistence, toxicity, exhaustion, and antigen-negative relapse. Enhancing CAR T cells with…

Cell Behavior · Quantitative Biology 2025-11-07 Lucas E Sant'Anna , Rohita Roy , Janella C Schwab , Julian I Perez , Michaëlle N Mayalu

Cell and immunotherapy offer transformative potential for treating diseases like cancer and autoimmune disorders by modulating the immune system. The development of these therapies is resource-intensive, with the majority of drug candidates…

Machine Learning · Computer Science 2024-12-04 Katarzyna Janocha , Annabel Ling , Alice Godson , Yulia Lampi , Simon Bornschein , Nils Y. Hammerla
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