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Large-scale language models often learn behaviors that are misaligned with user expectations. Generated text may contain offensive or toxic language, contain significant repetition, or be of a different sentiment than desired by the user.…

计算与语言 · 计算机科学 2022-11-18 Ximing Lu , Sean Welleck , Jack Hessel , Liwei Jiang , Lianhui Qin , Peter West , Prithviraj Ammanabrolu , Yejin Choi

Reward modeling is essential for aligning large language models with human preferences through reinforcement learning. To provide accurate reward signals, a reward model (RM) should stimulate deep thinking and conduct interpretable…

计算与语言 · 计算机科学 2026-03-09 Xiusi Chen , Gaotang Li , Ziqi Wang , Bowen Jin , Cheng Qian , Yu Wang , Hongru Wang , Yu Zhang , Denghui Zhang , Tong Zhang , Hanghang Tong , Heng Ji

In this paper, we introduce Reward-RAG, a novel approach designed to enhance the Retrieval-Augmented Generation (RAG) model through Reward-Driven Supervision. Unlike previous RAG methodologies, which focus on training language models (LMs)…

计算与语言 · 计算机科学 2024-10-08 Thang Nguyen , Peter Chin , Yu-Wing Tai

Deep Reinforcement Learning (DRL) has the potential to be used for synthesizing feedback controllers (agents) for various complex systems with unknown dynamics. These systems are expected to satisfy diverse safety and liveness properties…

人工智能 · 计算机科学 2022-12-05 Nikhil Kumar Singh , Indranil Saha

Manipulating data, such as weighting data examples or augmenting with new instances, has been increasingly used to improve model training. Previous work has studied various rule- or learning-based approaches designed for specific types of…

机器学习 · 计算机科学 2019-10-29 Zhiting Hu , Bowen Tan , Ruslan Salakhutdinov , Tom Mitchell , Eric P. Xing

One of the biggest challenges of end-to-end language generation from meaning representations in dialogue systems is making the outputs more natural and varied. Here we take a large corpus of 50K crowd-sourced utterances in the restaurant…

计算与语言 · 计算机科学 2018-09-17 Juraj Juraska , Marilyn Walker

Recent language models have been improved by the addition of external memory. Nearest neighbor language models retrieve similar contexts to assist in word prediction. The addition of locality levels allows a model to learn how to weight…

计算与语言 · 计算机科学 2023-11-02 Gilles Nawezi , Lucie Flek , Charles Welch

Despite the success of style transfer in image processing, it has seen limited progress in natural language generation. Part of the problem is that content is not as easily decoupled from style in the text domain. Curiously, in the field of…

计算与语言 · 计算机科学 2019-11-11 Katy Gero , Chris Kedzie , Jonathan Reeve , Lydia Chilton

Reinforcement learning (RL) shows great potential for optimizing multi-vehicle cooperative driving strategies through the state-action-reward feedback loop, but it still faces challenges such as low sample efficiency. This paper proposes a…

人工智能 · 计算机科学 2025-08-12 Ye Han , Lijun Zhang , Dejian Meng , Zhuang Zhang

We propose a Distributional Approach for addressing Controlled Text Generation from pre-trained Language Models (LMs). This approach permits to specify, in a single formal framework, both "pointwise" and "distributional" constraints over…

计算与语言 · 计算机科学 2021-05-07 Muhammad Khalifa , Hady Elsahar , Marc Dymetman

Prior work in style-controlled text generation has focused on tasks such as emulating the style of prolific literary authors, producing formal or informal text, and mitigating toxicity of generated text. Plentiful demonstrations of these…

计算与语言 · 计算机科学 2024-03-05 Aleem Khan , Andrew Wang , Sophia Hager , Nicholas Andrews

Large Language Models (LLMs) have shown impressive capabilities in multi-step reasoning and problem-solving.Recent works introduce multi-agent reflection frameworks where multiple LLM agents critique and refine each other's outputs using…

人工智能 · 计算机科学 2025-11-26 Yuanhao Li , Mingshan Liu , Hongbo Wang , Yiding Zhang , Yifei Ma , Wei Tan

Much research in recent years has focused on automatic article commenting. However, few of previous studies focus on the controllable generation of comments. Besides, they tend to generate dull and commonplace comments, which further limits…

计算与语言 · 计算机科学 2021-07-27 Linhao Zhang , Houfeng Wang

The semantic controllability of StyleGAN is enhanced by unremitting research. Although the existing weak supervision methods work well in manipulating the style codes along one attribute, the accuracy of manipulating multiple attributes is…

计算机视觉与模式识别 · 计算机科学 2022-09-29 Bingchuan Li , Shaofei Cai , Wei Liu , Peng Zhang , Qian He , Miao Hua , Zili Yi

The recently proposed distributional approach to reinforcement learning (DiRL) is centered on learning the distribution of the reward-to-go, often referred to as the value distribution. In this work, we show that the distributional Bellman…

机器学习 · 计算机科学 2018-08-07 Dror Freirich , Ron Meir , Aviv Tamar

Ensuring that reinforcement learning (RL) controllers satisfy safety and reliability constraints in real-world settings remains challenging: state-avoidance and constrained Markov decision processes often fail to capture trajectory-level…

机器学习 · 计算机科学 2026-04-06 Alper Kamil Bozkurt , Calin Belta , Ming C. Lin

Reinforcement learning (RL) is a powerful approach to enhance task-oriented dialogue (TOD) systems. However, existing RL methods tend to mainly focus on generation tasks, such as dialogue policy learning (DPL) or response generation (RG),…

人工智能 · 计算机科学 2024-06-21 Huifang Du , Shuqin Li , Minghao Wu , Xuejing Feng , Yuan-Fang Li , Haofen Wang

RL-based techniques can be employed to search for prompts that, when fed into a target language model, maximize a set of user-specified reward functions. However, in many target applications, the natural reward functions are in tension with…

计算与语言 · 计算机科学 2025-06-10 Yasaman Jafari , Dheeraj Mekala , Rose Yu , Taylor Berg-Kirkpatrick

Inferring reward functions from demonstrations and pairwise preferences are auspicious approaches for aligning Reinforcement Learning (RL) agents with human intentions. However, state-of-the art methods typically focus on learning a single…

机器学习 · 计算机科学 2022-01-04 Markus Peschl , Arkady Zgonnikov , Frans A. Oliehoek , Luciano C. Siebert

Controlling stylistic attributes in large language models (LLMs) remains challenging, with existing approaches relying on either prompt engineering or post-training alignment. This paper investigates this challenge through the lens of…

计算与语言 · 计算机科学 2026-03-05 Zhenyu Xu , Victor S. Sheng