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This technical brief introduces Deep Agent, an advanced autonomous AI system designed to manage complex multi-phase tasks through a novel hierarchical task management architecture. The system's foundation is built on our Hierarchical Task…

Artificial Intelligence · Computer Science 2025-02-12 Amy Yu , Erik Lebedev , Lincoln Everett , Xiaoxin Chen , Terry Chen

Existing tool-augmented large language models (LLMs) encounter significant challenges when processing complex queries. Current frameworks such as ReAct are prone to local optimization traps due to their reliance on incremental…

Artificial Intelligence · Computer Science 2025-11-26 Xiaolong Wei , Yuehu Dong , Xingliang Wang , Xingyu Zhang , Zhejun Zhao , Dongdong Shen , Long Xia , Dawei Yin

Directed acyclic graph (DAG) models are widely used to represent causal relationships among random variables in many application domains. This paper studies a special class of non-Gaussian DAG models, where the conditional variance of each…

Machine Learning · Statistics 2021-11-03 Wei Zhou , Xin He , Wei Zhong , Junhui Wang

Directed acyclic graph (DAG) has been widely employed to represent directional relationships among a set of collected nodes. Yet, the available data in one single study is often limited for accurate DAG reconstruction, whereas heterogeneous…

Machine Learning · Statistics 2023-10-17 Mingyang Ren , Xin He , Junhui Wang

Skill ecosystems for LLM agents have matured rapidly, yet recent benchmarks show that providing agents with more skills does not monotonically improve performance -- focused sets of 2-3 skills outperform comprehensive documentation, and…

Computation and Language · Computer Science 2026-04-21 Tianle Xia , Lingxiang Hu , Yiding Sun , Ming Xu , Lan Xu , Siying Wang , Wei Xu , Jie Jiang

The coordination between agents in multi-agent systems has become a popular topic in many fields. To catch the inner relationship between agents, the graph structure is combined with existing methods and improves the results. But in…

Multiagent Systems · Computer Science 2023-12-08 Guangchong Zhou , Zhiwei Xu , Zeren Zhang , Guoliang Fan

Learning a faithful directed acyclic graph (DAG) from samples of a joint distribution is a challenging combinatorial problem, owing to the intractable search space superexponential in the number of graph nodes. A recent breakthrough…

Machine Learning · Computer Science 2019-04-24 Yue Yu , Jie Chen , Tian Gao , Mo Yu

Multi-agent frameworks powered by large language models (LLMs) have demonstrated great success in automated planning and task execution. However, the effective adjustment of agentic workflows during execution has not been well studied. An…

Artificial Intelligence · Computer Science 2025-02-25 Boye Niu , Yiliao Song , Kai Lian , Yifan Shen , Yu Yao , Kun Zhang , Tongliang Liu

The evolution of Retrieval-Augmented Generation (RAG) has shifted from static retrieval pipelines to dynamic, agentic workflows where a central planner orchestrates multi-turn reasoning. However, existing paradigms face a critical…

Artificial Intelligence · Computer Science 2026-01-30 Yiqun Chen , Erhan Zhang , Tianyi Hu , Shijie Wang , Zixuan Yang , Meizhi Zhong , Xiaochi Wei , Yan Gao , Yi Wu , Yao Hu , Jiaxin Mao

The advancement of foundation models fosters new initiatives for policy learning in achieving safe and efficient autonomous driving. However, a critical bottleneck lies in the manual engineering of reward functions and training curricula…

Robotics · Computer Science 2025-09-23 Zengqi Peng , Yusen Xie , Yubin Wang , Rui Yang , Qifeng Chen , Jun Ma

Dual-arm robots offer enhanced versatility and efficiency over single-arm counterparts by enabling concurrent manipulation of multiple objects or cooperative execution of tasks using both arms. However, the coordination of dual-arm systems…

Robotics · Computer Science 2025-04-14 Zeyu Gao , Yao Mu , Jinye Qu , Mengkang Hu , Shijia Peng , Chengkai Hou , Lingyue Guo , Ping Luo , Shanghang Zhang , Yanfeng Lu

The real world is awash with multi-agent problems that require collective action by self-interested agents, from the routing of packets across a computer network to the management of irrigation systems. Such systems have local incentives…

Multiagent Systems · Computer Science 2021-02-16 Michiel A. Bakker , Richard Everett , Laura Weidinger , Iason Gabriel , William S. Isaac , Joel Z. Leibo , Edward Hughes

Meta Reinforcement Learning (RL) methods focus on automating the design of RL algorithms that generalize to a wide range of environments. The framework introduced in (Anonymous, 2020) addresses the problem by representing different RL…

Machine Learning · Computer Science 2021-01-19 Juan Jose Garau Luis

Transformer models have recently gained popularity in graph representation learning as they have the potential to learn complex relationships beyond the ones captured by regular graph neural networks. The main research question is how to…

Machine Learning · Computer Science 2023-10-31 Yuankai Luo , Veronika Thost , Lei Shi

Synthetic data can be used in various applications, such as correcting bias datasets or replacing scarce original data for simulation purposes. Generative Adversarial Networks (GANs) are considered state-of-the-art for developing generative…

Machine Learning · Computer Science 2022-03-08 Gael Lederrey , Tim Hillel , Michel Bierlaire

Multi-agent reinforcement learning (MARL) provides an efficient way for simultaneously learning policies for multiple agents interacting with each other. However, in scenarios requiring complex interactions, existing algorithms can suffer…

Machine Learning · Computer Science 2022-03-08 Xiaobai Ma , David Isele , Jayesh K. Gupta , Kikuo Fujimura , Mykel J. Kochenderfer

In this paper, we propose Manipulation Relationship Graph (MRG), a novel affordance representation which captures the underlying manipulation relationships of an arbitrary scene. To construct such a graph from raw visual observations, a…

Robotics · Computer Science 2021-11-02 Chao Tang , Jingwen Yu , Weinan Chen , Hong Zhang

Agentic retrieval-augmented generation (RAG) formulates question answering as a multi-step interaction between reasoning and information retrieval, and has recently been advanced by reinforcement learning (RL) with outcome-based…

Computation and Language · Computer Science 2026-01-13 Tianhua Zhang , Kun Li , Junan Li , Yunxiang Li , Hongyin Luo , Xixin Wu , James Glass , Helen Meng

Autonomous agents powered by large language models (LLMs) have shown impressive capabilities in tool manipulation for complex task-solving. However, existing paradigms such as ReAct rely on sequential reasoning and execution, failing to…

Artificial Intelligence · Computer Science 2025-10-30 Jiaqi Wu , Qinlao Zhao , Zefeng Chen , Kai Qin , Yifei Zhao , Xueqian Wang , Yuhang Yao

In question-answering (QA) systems, Retrieval-Augmented Generation (RAG) has become pivotal in enhancing response accuracy and reducing hallucination issues. The architecture of RAG systems varies significantly, encompassing single-round…

Computation and Language · Computer Science 2025-08-05 Yiqun Chen , Erhan Zhang , Lingyong Yan , Shuaiqiang Wang , Jizhou Huang , Dawei Yin , Jiaxin Mao