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Instruction-fine-tuned large language models (LLMs) under 14B parameters continue to underperform on natural language understanding (NLU) tasks, often trailing smaller models like BERT-base on benchmarks such as GLUE and SuperGLUE.…

计算与语言 · 计算机科学 2025-09-29 Bokai Hu , Sai Ashish Somayajula , Xin Pan , Pengtao Xie

Previous studies on automatic berthing systems based on artificial neural network (ANN) showed great berthing performance by training the ANN with ship berthing data as training data. However, because the ANN requires a large amount of…

机器学习 · 计算机科学 2021-12-06 Daesoo Lee

Despite Proximal Policy Optimization (PPO) dominating policy gradient methods -- from robotic control to game AI -- its static trust region forces a brittle trade-off: aggressive clipping stifles early exploration, while late-stage updates…

机器学习 · 计算机科学 2025-05-26 Ben Rahman

Performative prediction aims to model scenarios where predictive outcomes subsequently influence the very systems they target. The pursuit of a performative optimum (PO) -- minimizing performative risk -- is generally reliant on modeling of…

机器学习 · 计算机科学 2025-02-11 Songkai Xue , Yuekai Sun

Reinforcement learning (RL) is a promising method to solve control problems. However, model-free RL algorithms are sample inefficient and require thousands if not millions of samples to learn optimal control policies. A major source of…

机器学习 · 计算机科学 2022-10-31 Atish Dixit , Ahmed Elsheikh

Speculative decoding accelerates LLM inference by having a lightweight draft model propose speculative windows of candidate tokens for parallel verification by a larger target model. In practice, speculative efficiency is often bottlenecked…

计算与语言 · 计算机科学 2026-05-18 Jie Jiang , Xing Sun , Ruotian Chen , Jianan Su , Kaixin Shen

This study evaluates the performance of classical and modern control methods for real-world Cable-Driven Parallel Robots (CDPRs), focusing on underconstrained systems with limited time discretization. A comparative analysis is conducted…

机器人学 · 计算机科学 2025-10-10 Damir Nurtdinov , Aliaksei Korshuk , Alexei Kornaev , Alexander Maloletov

In this letter, we investigate the discrete phase shift design of the intelligent reflecting surface (IRS) in a time division duplexing (TDD) multi-user multiple input multiple output (MIMO) system.We modify the design of deep reinforcement…

信息论 · 计算机科学 2023-07-31 Fengyu Zhao , Wen Chen , Ziwei Liu , Jun Li , Qingqing Wu

Efficient truck dispatching via Reinforcement Learning (RL) in open-pit mining is often hindered by reliance on complex reward engineering and value-based methods. This paper introduces Curriculum-inspired Adaptive Direct Policy Guidance, a…

机器学习 · 计算机科学 2025-03-03 Shi Meng , Bin Tian , Xiaotong Zhang

Proximal Policy Optimization (PPO) has become the de facto standard for training legged robots, thanks to its robustness and scalability in massively parallel simulation environments like IsaacLab. However, its on-policy nature makes it…

机器人学 · 计算机科学 2026-05-26 Gianluca Sabatini , Chenhao Li , Marco Hutter

This study conducts a comparative analysis of Model Predictive Control (MPC) and Proximal Policy Optimization (PPO), a Deep Reinforcement Learning (DRL) algorithm, applied to a 1-Degree of Freedom (DOF) Quanser Aero 2 system. Classical…

系统与控制 · 电气工程与系统科学 2024-08-29 Georg Schäfer , Jakob Rehrl , Stefan Huber , Simon Hirlaender

Recent research has made significant progress in optimizing diffusion models for downstream objectives, which is an important pursuit in fields such as graph generation for drug design. However, directly applying these models to graph…

机器学习 · 计算机科学 2024-10-28 Yijing Liu , Chao Du , Tianyu Pang , Chongxuan Li , Min Lin , Wei Chen

We consider the problem of policy transfer between two Markov Decision Processes (MDPs). We introduce a lemma based on existing theoretical results in reinforcement learning to measure the relativity gap between two arbitrary MDPs, that is…

机器学习 · 计算机科学 2024-01-25 Jiawei Xu , Cheng Zhou , Yizheng Zhang , Baoxiang Wang , Lei Han

Humanoid loco-manipulation requires coordinated high-level motion plans with stable, low-level whole-body execution under complex robot-environment dynamics and long-horizon tasks. While diffusion policies (DPs) show promise for learning…

This study presents a methodology for surrogate optimization of cyclic adsorption processes, focusing on enhancing Pressure Swing Adsorption units for carbon dioxide ($CO_{2}$) capture. We developed and implemented a multiple-input,…

化学物理 · 物理学 2023-12-08 Carine Menezes Rebello , Idelfonso B. R. Nogueira

Reinforcement learning (RL) has demonstrated the ability to maintain the plasticity of the policy throughout short-term training in aerial robot control. However, these policies have been shown to loss of plasticity when extended to…

机器人学 · 计算机科学 2025-03-11 Ali Tahir Karasahin , Ziniu Wu , Basaran Bahadir Kocer

Self-Driven Particles (SDP) describe a category of multi-agent systems common in everyday life, such as flocking birds and traffic flows. In a SDP system, each agent pursues its own goal and constantly changes its cooperative or competitive…

机器学习 · 计算机科学 2022-01-11 Zhenghao Peng , Quanyi Li , Ka Ming Hui , Chunxiao Liu , Bolei Zhou

The goal of robust constrained reinforcement learning (RL) is to optimize an agent's performance under the worst-case model uncertainty while satisfying safety or resource constraints. In this paper, we demonstrate that strong duality does…

机器学习 · 计算机科学 2025-09-23 Shaocong Ma , Ziyi Chen , Yi Zhou , Heng Huang

Treatment planning uncertainties are typically managed using margin-based or robust optimization. Margin-based methods expand the clinical target volume (CTV) to a planning target volume, generally unsuited for proton therapy. Robust…

We propose Frictive Policy Optimization (FPO), a framework for learning language model policies that regulate not only what to say, but when and how to intervene in order to manage epistemic and normative risk. Unlike standard alignment…

计算与语言 · 计算机科学 2026-04-29 James Pustejovsky , Nikhil Krishnaswamy