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相关论文: CWM: Contrastive World Models for Action Feasibili…

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Fine-tuning pre-trained language models (PLMs) has demonstrated its effectiveness on various downstream NLP tasks recently. However, in many low-resource scenarios, the conventional fine-tuning strategies cannot sufficiently capture the…

计算与语言 · 计算机科学 2021-11-15 Yusheng Su , Xu Han , Yankai Lin , Zhengyan Zhang , Zhiyuan Liu , Peng Li , Jie Zhou , Maosong Sun

Driven by large-scale contrastive vision-language pre-trained models such as CLIP, recent advancements in the image-text matching task have achieved remarkable success in representation learning. Due to image-level visual-language…

计算机视觉与模式识别 · 计算机科学 2025-07-15 Mengxiao Tian , Xinxiao Wu , Shuo Yang

We introduce the Contrastive Similarity Space Embedding Algorithm (ContraSim), a novel framework for uncovering the global semantic relationships between daily financial headlines and market movements. ContraSim operates in two key stages:…

统计金融 · 定量金融 2025-02-25 Nicholas Vinden , Raeid Saqur , Zining Zhu , Frank Rudzicz

Reinforcement learning (RL) has made significant advancements, achieving superhuman performance in various tasks. However, RL agents often operate under the assumption of environmental stationarity, which poses a great challenge to learning…

机器学习 · 计算机科学 2025-11-18 Guoqing Ma , Yuhan Zhang , Yuming Dai , Guangfu Hao , Yang Chen , Shan Yu

We present the Multi-Agent Transformer World Model (MATWM), a novel transformer-based world model designed for multi-agent reinforcement learning in both vector- and image-based environments. MATWM combines a decentralized imagination…

机器学习 · 计算机科学 2025-06-24 Azad Deihim , Eduardo Alonso , Dimitra Apostolopoulou

Recent contrastive based 3D action representation learning has made great progress. However, the strict positive/negative constraint is yet to be relaxed and the use of non-self positive is yet to be explored. In this paper, a Contrastive…

计算机视觉与模式识别 · 计算机科学 2022-08-09 Haoyuan Zhang , Yonghong Hou , Wenjing Zhang , Wanqing Li

Contrastive Language-Image Pre-training (CLIP) provides a foundation model by integrating natural language into visual concepts, enabling zero-shot recognition on downstream tasks. It is usually expected that satisfactory overall accuracy…

计算机视觉与模式识别 · 计算机科学 2023-10-06 Jie-Jing Shao , Jiang-Xin Shi , Xiao-Wen Yang , Lan-Zhe Guo , Yu-Feng Li

Machine learning and Large language models (LLMs) for vulnerability detection has received significant attention in recent years. Unfortunately, state-of-the-art techniques show that LLMs are unsuccessful in even distinguishing the…

密码学与安全 · 计算机科学 2025-08-05 Mohammed Sayagh , Mohammad Ghafari

World models enable agents to predict future dynamics conditioned on actions, making the choice of latent representation central to planning and control. Such representations are often either learned directly from pixels with limited…

人工智能 · 计算机科学 2026-05-26 Minghao Fu , Fan Feng , Nicklas Hansen , Biwei Huang

Large language models (LLMs) have shown great potential in decision-making due to the vast amount of knowledge stored within the models. However, these pre-trained models are prone to lack reasoning abilities and are difficult to adapt to…

机器学习 · 计算机科学 2025-06-02 Wei Chen , Jiahao Zhang , Haipeng Zhu , Boyan Xu , Zhifeng Hao , Keli Zhang , Junjian Ye , Ruichu Cai

Modeling urban crime is an important yet challenging task that requires understanding the subtle visual, social, and cultural cues embedded in urban environments. Previous work has mainly focused on rule-based agent-based modeling (ABM) and…

人工智能 · 计算机科学 2025-06-11 Qingbin Zeng , Ruotong Zhao , Jinzhu Mao , Haoyang Li , Fengli Xu , Yong Li

Post-training is essential for turning pretrained generalist robot policies into reliable task-specific controllers, but existing human-in-the-loop pipelines remain tied to physical execution: each correction requires robot time, scene…

机器人学 · 计算机科学 2026-05-06 Yaxuan Li , Zhongyi Zhou , Yefei Chen , Yanjiang Guo , Jiaming Liu , Shanghang Zhang , Jianyu Chen , Yichen Zhu

Context, the embedding of previous collected trajectories, is a powerful construct for Meta-Reinforcement Learning (Meta-RL) algorithms. By conditioning on an effective context, Meta-RL policies can easily generalize to new tasks within a…

机器学习 · 计算机科学 2020-12-16 Haotian Fu , Hongyao Tang , Jianye Hao , Chen Chen , Xidong Feng , Dong Li , Wulong Liu

While large language models (LMs) have shown remarkable capabilities across numerous tasks, they often struggle with simple reasoning and planning in physical environments, such as understanding object permanence or planning household…

计算与语言 · 计算机科学 2023-10-31 Jiannan Xiang , Tianhua Tao , Yi Gu , Tianmin Shu , Zirui Wang , Zichao Yang , Zhiting Hu

Large Language Models (LLMs) have recently shown strong reasoning and generalization capabilities, motivating their use as decision-making policies in complex environments. StarCraft II (SC2), with its massive state-action space and partial…

人工智能 · 计算机科学 2026-02-17 Yixin Zhang , Ziyi Wang , Yiming Rong , Haoxi Wang , Jinling Jiang , Shuang Xu , Haoran Wu , Shiyu Zhou , Bo Xu

Instruction tuning has been used as a promising approach to improve the performance of large language models (LLMs) on unseen tasks. However, current LLMs exhibit limited robustness to unseen instructions, generating inconsistent outputs…

计算与语言 · 计算机科学 2024-06-07 Tianyi Lorena Yan , Fei Wang , James Y. Huang , Wenxuan Zhou , Fan Yin , Aram Galstyan , Wenpeng Yin , Muhao Chen

Counterfactual explanations (CFEs) provide human-centric interpretability by identifying the minimal, actionable changes required to alter a machine learning model's prediction. Therefore, CFs can be used as (i) interventions for…

Recent advancements in recommender systems have focused on leveraging Large Language Models (LLMs) to improve user preference modeling, yielding promising outcomes. However, current LLM-based approaches struggle to fully leverage user…

信息检索 · 计算机科学 2024-10-31 Yang Zhang , Juntao You , Yimeng Bai , Jizhi Zhang , Keqin Bao , Wenjie Wang , Tat-Seng Chua

World foundation models, which simulate the physical world by predicting future states from current observations and inputs, have become central to many applications in physical intelligence, including autonomous driving and robotics.…

计算机视觉与模式识别 · 计算机科学 2025-08-11 Wenyan Cong , Hanqing Zhu , Peihao Wang , Bangya Liu , Dejia Xu , Kevin Wang , David Z. Pan , Yan Wang , Zhiwen Fan , Zhangyang Wang

Advancements in foundation models (FMs) have led to a paradigm shift in machine learning. The rich, expressive feature representations from these pre-trained, large-scale FMs are leveraged for multiple downstream tasks, usually via…

机器学习 · 计算机科学 2024-12-19 Jihye Choi , Jayaram Raghuram , Yixuan Li , Somesh Jha