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Recent vision transformer based video models mostly follow the ``image pre-training then finetuning" paradigm and have achieved great success on multiple video benchmarks. However, full finetuning such a video model could be computationally…

Computer Vision and Pattern Recognition · Computer Science 2023-02-07 Taojiannan Yang , Yi Zhu , Yusheng Xie , Aston Zhang , Chen Chen , Mu Li

Understanding crowd behavior in video is challenging for computer vision. There have been increasing attempts on modeling crowded scenes by introducing ever larger property ontologies (attributes) and annotating ever larger training…

Computer Vision and Pattern Recognition · Computer Science 2019-08-19 Xun Xu , Shaogang Gong , Timothy Hospedales

Since collecting and annotating data for spatio-temporal action detection is very expensive, there is a need to learn approaches with less supervision. Weakly supervised approaches do not require any bounding box annotations and can be…

Computer Vision and Pattern Recognition · Computer Science 2021-01-22 Sovan Biswas , Juergen Gall

Human action recognition in computer vision has been widely studied in recent years. However, most algorithms consider only certain action specially with even high computational cost. That is not suitable for practical applications with…

Computer Vision and Pattern Recognition · Computer Science 2022-10-03 Zezhou Chen , Yajie Cui , Kaikai Zhao , Zhaoxiang Liu , Shiguo Lian

Training a neural network model that can quickly adapt to a new task is highly desirable yet challenging for few-shot learning problems. Recent few-shot learning methods mostly concentrate on developing various meta-learning strategies from…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Zihang Jiang , Bingyi Kang , Kuangqi Zhou , Jiashi Feng

In this paper, we introduce Attention Prompt Tuning (APT) - a computationally efficient variant of prompt tuning for video-based applications such as action recognition. Prompt tuning approaches involve injecting a set of learnable prompts…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Wele Gedara Chaminda Bandara , Vishal M. Patel

Process Reward Models (PRMs) provide step-level supervision to large language models (LLMs), but scaling up training data annotation remains challenging for both humans and LLMs. To address this limitation, we propose an active learning…

Machine Learning · Computer Science 2025-04-16 Keyu Duan , Zichen Liu , Xin Mao , Tianyu Pang , Changyu Chen , Qiguang Chen , Michael Qizhe Shieh , Longxu Dou

Human Action Anomaly Detection (HAAD) aims to identify anomalous actions given only normal action data during training. Existing methods typically follow a one-model-per-category paradigm, requiring separate training for each action…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Koichiro Kamide , Shunsuke Sakai , Shun Maeda , Chunzhi Gu , Chao Zhang

Precisely naming the action depicted in a video can be a challenging and oftentimes ambiguous task. In contrast to object instances represented as nouns (e.g. dog, cat, chair, etc.), in the case of actions, human annotators typically lack a…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Kiyoon Kim , Davide Moltisanti , Oisin Mac Aodha , Laura Sevilla-Lara

Pedestrian attribute recognition has received increasing attention due to its important role in video surveillance applications. However, most existing methods are designed for a fixed set of attributes. They are unable to handle the…

Computer Vision and Pattern Recognition · Computer Science 2019-06-25 Liuyu Xiang , Xiaoming Jin , Guiguang Ding , Jungong Han , Leida Li

In the realm of artificial intelligence, where a vast majority of data is unstructured, obtaining substantial amounts of labeled data to train supervised machine learning models poses a significant challenge. To address this, we delve into…

Machine Learning · Computer Science 2024-01-19 Natan Vidra , Thomas Clifford , Katherine Jijo , Eden Chung , Liang Zhang

Temporal action proposal generation (TAPG) is a challenging task, which requires localizing action intervals in an untrimmed video. Intuitively, we as humans, perceive an action through the interactions between actors, relevant objects, and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Khoa Vo , Sang Truong , Kashu Yamazaki , Bhiksha Raj , Minh-Triet Tran , Ngan Le

Understanding Activities of Daily Living (ADLs) is a crucial step for different applications including assistive robots, smart homes, and healthcare. However, to date, few benchmarks and methods have focused on complex ADLs, especially…

Computer Vision and Pattern Recognition · Computer Science 2024-10-18 Zane Durante , Robathan Harries , Edward Vendrow , Zelun Luo , Yuta Kyuragi , Kazuki Kozuka , Li Fei-Fei , Ehsan Adeli

Attribute recognition has become crucial because of its wide applications in many computer vision tasks, such as person re-identification. Like many object recognition problems, variations in viewpoints, illumination, and recognition at far…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Hao Liu , Jingjing Wu , Jianguo Jiang , Meibin Qi , Bo Ren

Learning to localize actions in long, cluttered, and untrimmed videos is a hard task, that in the literature has typically been addressed assuming the availability of large amounts of annotated training samples for each class -- either in a…

Computer Vision and Pattern Recognition · Computer Science 2021-09-24 Ting-Ting Xie , Christos Tzelepis , Fan Fu , Ioannis Patras

Using massive datasets to train large-scale models has emerged as a dominant approach for broad generalization in natural language and vision applications. In reinforcement learning, however, a key challenge is that available data of…

Machine Learning · Computer Science 2022-12-07 David Venuto , Sherry Yang , Pieter Abbeel , Doina Precup , Igor Mordatch , Ofir Nachum

We introduce Label-Combination Prototypical Networks (LC-Protonets) to address the problem of multi-label few-shot classification, where a model must generalize to new classes based on only a few available examples. Extending Prototypical…

Sound · Computer Science 2025-02-11 Charilaos Papaioannou , Emmanouil Benetos , Alexandros Potamianos

Few-shot learning aims to recognize instances from novel classes with few labeled samples, which has great value in research and application. Although there has been a lot of work in this area recently, most of the existing work is based on…

Computer Vision and Pattern Recognition · Computer Science 2020-10-14 Congqi Cao , Yajuan Li , Qinyi Lv , Peng Wang , Yanning Zhang

Prompt learning has proven effective in adapting vision language models for downstream tasks. However, existing methods usually append learnable prompt tokens solely with the category names to obtain textual features, which fails to fully…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Tong Ding , Wanhua Li , Zhongqi Miao , Hanspeter Pfister

In the field of Automated Planning and Scheduling (APS), intelligent agents by virtue require an action model (blueprints of actions whose interleaved executions effectuates transitions of the system state) in order to plan and solve real…

Artificial Intelligence · Computer Science 2018-10-05 Ankuj Arora , Humbert Fiorino , Damien Pellier , Sylvie Pesty