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Typical person re-identification (re-ID) methods train a deep CNN to extract deep features and combine them with a distance metric for the final evaluation. In this work, we focus on exploiting the full information encoded in the deep…

计算机视觉与模式识别 · 计算机科学 2018-11-22 Yong Liu , Lin Shang , Andy Song

Human Activity Recognition (HAR) describes the machines ability to recognize human actions. Nowadays, most people on earth are health conscious, so people are more interested in tracking their daily activities using Smartphones or Smart…

机器学习 · 计算机科学 2022-05-23 Sanku Satya Uday , Satti Thanuja Pavani , T. Jaya Lakshmi , Rohit Chivukula

In this paper, we study the challenging problem of categorizing videos according to high-level semantics such as the existence of a particular human action or a complex event. Although extensive efforts have been devoted in recent years,…

计算机视觉与模式识别 · 计算机科学 2018-02-23 Yu-Gang Jiang , Zuxuan Wu , Jun Wang , Xiangyang Xue , Shih-Fu Chang

Pervasive computing allows the provision of services in many important areas, including the relevant and dynamic field of health and well-being. In this domain, Human Activity Recognition (HAR) has gained a lot of attention in recent years.…

人工智能 · 计算机科学 2023-04-27 Bonpagna Kann , Sandra Castellanos-Paez , Philippe Lalanda

Action recognition has become a rapidly developing research field within the last decade. But with the increasing demand for large scale data, the need of hand annotated data for the training becomes more and more impractical. One way to…

计算机视觉与模式识别 · 计算机科学 2019-06-05 Hilde Kuehne , Alexander Richard , Juergen Gall

Recently, action proposal methods have played an important role in action recognition tasks, as they reduce the search space dramatically. Most unsupervised action proposal methods tend to generate hundreds of action proposals which include…

计算机视觉与模式识别 · 计算机科学 2017-04-05 Waqas Sultani , Dong Zhang , Mubarak Shah

Reinforcement learning from human feedback (RLHF) has become a key factor in aligning model behavior with users' goals. However, while humans integrate multiple strategies when making decisions, current RLHF approaches often simplify this…

机器学习 · 计算机科学 2025-06-19 Mingkang Wu , Devin White , Evelyn Rose , Vernon Lawhern , Nicholas R Waytowich , Yongcan Cao

In the recent years there has been a growing interest in techniques able to automatically recognize activities performed by people. This field is known as Human Activity recognition (HAR). HAR can be crucial in monitoring the wellbeing of…

计算机视觉与模式识别 · 计算机科学 2020-09-02 Anna Ferrari , Daniela Micucci , Marco Mobilio , Paolo Napoletano

Human Activity Recognition~(HAR) is the classification of human movement, captured using one or more sensors either as wearables or embedded in the environment~(e.g. depth cameras, pressure mats). State-of-the-art methods of HAR rely on…

计算机视觉与模式识别 · 计算机科学 2020-06-16 Anjana Wijekoon , Nirmalie Wiratunga

Repetitive action counting (RAC) aims to estimate the number of class-agnostic action occurrences in a video without exemplars. Most current RAC methods rely on a raw frame-to-frame similarity representation for period prediction. However,…

计算机视觉与模式识别 · 计算机科学 2025-01-14 Sujia Wang , Xiangwei Shen , Yansong Tang , Xin Dong , Wenjia Geng , Lei Chen

Evaluating the quality of retrieval-augmented generation (RAG) and document reranking systems remains challenging due to the lack of scalable, user-centric, and multi-perspective evaluation tools. We introduce RankArena, a unified platform…

信息检索 · 计算机科学 2025-08-08 Abdelrahman Abdallah , Mahmoud Abdalla , Bhawna Piryani , Jamshid Mozafari , Mohammed Ali , Adam Jatowt

Human activity recognition (HAR) by wearable sensor devices embedded in the Internet of things (IOT) can play a significant role in remote health monitoring and emergency notification, to provide healthcare of higher standards. The purpose…

机器学习 · 计算机科学 2022-01-24 M. Abid , A. Khabou , Y. Ouakrim , H. Watel , S. Chemkhi , A. Mitiche , A. Benazza-Benyahia , N. Mezghani

Discovering relevant patterns for a particular user remains a challenging tasks in data mining. Several approaches have been proposed to learn user-specific pattern ranking functions. These approaches generalize well, but at the expense of…

人工智能 · 计算机科学 2022-03-08 Nassim Belmecheri , Noureddine Aribi , Nadjib Lazaar , Yahia Lebbah , Samir Loudni

Artificial neural network (ANN) is a very useful tool in solving learning problems. Boosting the performances of ANN can be mainly concluded from two aspects: optimizing the architecture of ANN and normalizing the raw data for ANN. In this…

机器学习 · 计算机科学 2017-12-27 Qingjiu Zhang , Shiliang Sun

As the final stage of the multi-stage recommender system (MRS), reranking directly affects users' experience and satisfaction, thus playing a critical role in MRS. Despite the improvement achieved in the existing work, three issues are yet…

信息检索 · 计算机科学 2022-04-21 Yunjia Xi , Weiwen Liu , Jieming Zhu , Xilong Zhao , Xinyi Dai , Ruiming Tang , Weinan Zhang , Rui Zhang , Yong Yu

Person re-identification (PRe-ID) is a crucial task in security, surveillance, and retail analysis, which involves identifying an individual across multiple cameras and views. However, it is a challenging task due to changes in…

计算机视觉与模式识别 · 计算机科学 2023-07-06 Ammar Chouchane , Abdelmalik Ouamane , Yassine Himeur , Wathiq Mansoor , Shadi Atalla , Afaf Benzaibak , Chahrazed Boudellal

This paper proposes a novel approach to person re-identification, a fundamental task in distributed multi-camera surveillance systems. Although a variety of powerful algorithms have been presented in the past few years, most of them usually…

计算机视觉与模式识别 · 计算机科学 2016-05-04 Shi-Zhe Chen , Chun-Chao Guo , Jian-Huang Lai

The re-ranking approach leverages high-confidence retrieved samples to refine retrieval results, which have been widely adopted as a post-processing tool for image retrieval tasks. However, we notice one main flaw of re-ranking, i.e., high…

计算机视觉与模式识别 · 计算机科学 2021-01-01 Xuanmeng Zhang , Minyue Jiang , Zhedong Zheng , Xiao Tan , Errui Ding , Yi Yang

We propose an effective structured learning based approach to the problem of person re-identification which outperforms the current state-of-the-art on most benchmark data sets evaluated. Our framework is built on the basis of multiple…

计算机视觉与模式识别 · 计算机科学 2015-03-06 Sakrapee Paisitkriangkrai , Chunhua Shen , Anton van den Hengel

Person re-identification has attracted many researchers' attention for its wide application, but it is still a very challenging task because only part of the image information can be used for personnel matching. Most of current methods uses…

计算机视觉与模式识别 · 计算机科学 2019-12-30 Zhiguang Zhang