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The functionality of Large Language Model (LLM) agents is primarily determined by two capabilities: action planning and answer summarization. The former, action planning, is the core capability that dictates an agent's performance. However,…

Machine Learning · Computer Science 2025-08-28 Zhiwei Li , Yong Hu , Wenqing Wang

Acquiring complex behaviors is essential for artificially intelligent agents, yet learning these behaviors in high-dimensional settings poses a significant challenge due to the vast search space. Traditional reinforcement learning (RL)…

Machine Learning · Computer Science 2025-04-22 Mert Albaba , Sammy Christen , Thomas Langarek , Christoph Gebhardt , Otmar Hilliges , Michael J. Black

Lifelong person re-identification (LReID) assumes a practical scenario where the model is sequentially trained on continuously incoming datasets while alleviating the catastrophic forgetting in the old datasets. However, not only the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Minyoung Oh , Jae-Young Sim

Human Activity Recognition (HAR) underpins applications in healthcare, rehabilitation, fitness tracking, and smart environments, yet existing deep learning approaches demand dataset-specific training, large labeled corpora, and significant…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Nirhoshan Sivaroopan , Hansi Karunarathna , Chamara Madarasingha , Anura Jayasumana , Kanchana Thilakarathna

Traditional text-based person ReID assumes that person descriptions from witnesses are complete and provided at once. However, in real-world scenarios, such descriptions are often partial or vague. To address this limitation, we introduce a…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Yiding Lu , Mouxing Yang , Dezhong Peng , Peng Hu , Yijie Lin , Xi Peng

Reinforcement Learning-based Recommender Systems (RLRS) have shown promise across a spectrum of applications, from e-commerce platforms to streaming services. Yet, they grapple with challenges, notably in crafting reward functions and…

Information Retrieval · Computer Science 2024-03-27 Siyu Wang , Xiaocong Chen , Lina Yao

Person attribute recognition and attribute-based retrieval are two core human-centric tasks. In the recognition task, the challenge is specifying attributes depending on a person's appearance, while the retrieval task involves searching for…

Computer Vision and Pattern Recognition · Computer Science 2024-05-01 Doanh C. Bui , Thinh V. Le , Ba Hung Ngo , Tae Jong Choi

Not all people are equally easy to identify: color statistics might be enough for some cases while others might require careful reasoning about high- and low-level details. However, prevailing person re-identification(re-ID) methods use…

Computer Vision and Pattern Recognition · Computer Science 2018-10-03 Yan Wang , Lequn Wang , Yurong You , Xu Zou , Vincent Chen , Serena Li , Gao Huang , Bharath Hariharan , Kilian Q. Weinberger

Person re-identification has received a lot of attention from the research community in recent times. Due to its vital role in security based applications, person re-identification lies at the heart of research relevant to tracking…

Computer Vision and Pattern Recognition · Computer Science 2020-12-25 Ankit Yadav , Dinesh Kumar Vishwakarma

Person re-identification (Re-ID) is a crucial task in computer vision, aiming to recognize individuals across non-overlapping camera views. While recent advanced vision-language models (VLMs) excel in logical reasoning and multi-task…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Ke Niu , Haiyang Yu , Mengyang Zhao , Teng Fu , Siyang Yi , Wei Lu , Bin Li , Xuelin Qian , Xiangyang Xue

Person ReID methods always learn through a stationary domain that is fixed by the choice of a given dataset. In many contexts (e.g., lifelong learning), those methods are ineffective because the domain is continually changing in which case…

Computer Vision and Pattern Recognition · Computer Science 2021-03-24 Nan Pu , Wei Chen , Yu Liu , Erwin M. Bakker , Michael S. Lew

In this study, the aim is to personalize inertial sensor data-based human activity recognition models using incremental learning. At first, the recognition is based on user-independent model. However, when personal streaming data becomes…

Machine Learning · Computer Science 2019-05-31 Pekka Siirtola , Heli Koskimäki , Juha Röning

Adapting the user interface (UI) of software systems to meet the needs and preferences of users is a complex task. The main challenge is to provide the appropriate adaptations at the appropriate time to offer value to end-users. Recent…

Human-Computer Interaction · Computer Science 2024-05-16 Daniel Gaspar-Figueiredo , Marta Fernández-Diego , Ruben Nuredini , Silvia Abrahão , Emilio Insfrán

We study the problem of balancing effectiveness and efficiency in automated feature selection. After exploring many feature selection methods, we observe a computational dilemma: 1) traditional feature selection is mostly efficient, but…

Machine Learning · Computer Science 2020-10-07 Wei Fan , Kunpeng Liu , Hao Liu , Yong Ge , Hui Xiong , Yanjie Fu

Person Re-Identification (re-id) is a challenging task in computer vision, especially when there are limited training data from multiple camera views. In this paper, we pro- pose a deep learning based person re-identification method by…

Computer Vision and Pattern Recognition · Computer Science 2016-11-21 Qiqi Xiao , Kelei Cao , Haonan Chen , Fangyue Peng , Chi Zhang

While retrieval techniques are widely used in practice, they still face significant challenges in cross-domain scenarios. Recently, generation-augmented methods have emerged as a promising solution to this problem. These methods enhance raw…

Computation and Language · Computer Science 2025-02-18 Chaofan Li , Zheng Liu , Jianlyv Chen , Defu Lian , Yingxia Shao

Interactive recommender systems can dynamically adapt to user feedback, but often suffer from content homogeneity and filter bubble effects due to overfitting short-term user preferences. While recent efforts aim to improve content…

Information Retrieval · Computer Science 2026-05-12 Chongjun Xia , Yanchun Peng , Xianzhi Wang

Reinforcement Learning (RL) in various decision-making tasks of machine learning provides effective results with an agent learning from a stand-alone reward function. However, it presents unique challenges with large amounts of environment…

Machine Learning · Computer Science 2020-03-10 Neda Navidi

One typical assumption in inverse reinforcement learning (IRL) is that human experts act to optimize the expected utility of a stochastic cost with a fixed distribution. This assumption deviates from actual human behaviors under ambiguity.…

Machine Learning · Computer Science 2019-09-25 Rui Chen , Wenshuo Wang , Zirui Zhao , Ding Zhao

Interactive Information Retrieval (IIR) and Reinforcement Learning (RL) share many commonalities, including an agent who learns while interacts, a long-term and complex goal, and an algorithm that explores and adapts. To successfully apply…

Information Retrieval · Computer Science 2021-06-10 Limin Chen , Zhiwen Tang , Grace Hui Yang