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In this paper, we introduce the concept of Prior Activation Distribution (PAD) as a versatile and general technique to capture the typical activation patterns of hidden layer units of a Deep Neural Network used for classification tasks. We…

Computer Vision and Pattern Recognition · Computer Science 2019-07-08 Lakmal Meegahapola , Vengateswaran Subramaniam , Lance Kaplan , Archan Misra

Few-Shot Industrial Visual Anomaly Detection (FS-IVAD) comprises a critical task in modern manufacturing settings, where automated product inspection systems need to identify rare defects using only a handful of normal/defect-free training…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Aggelos Psiris , Yannis Panagakis , Maria Vakalopoulou , Georgios Th. Papadopoulos

Action in video usually involves the interaction of human with objects. Action labels are typically composed of various combinations of verbs and nouns, but we may not have training data for all possible combinations. In this paper, we aim…

Computer Vision and Pattern Recognition · Computer Science 2022-07-06 Zhekun Luo , Shalini Ghosh , Devin Guillory , Keizo Kato , Trevor Darrell , Huijuan Xu

Temporal action detection is a fundamental yet challenging task in video understanding. Video context is a critical cue to effectively detect actions, but current works mainly focus on temporal context, while neglecting semantic context as…

Computer Vision and Pattern Recognition · Computer Science 2020-04-06 Mengmeng Xu , Chen Zhao , David S. Rojas , Ali Thabet , Bernard Ghanem

We propose a computational model to estimate a person's attended awareness of their environment. We define attended awareness to be those parts of a potentially dynamic scene which a person has attended to in recent history and which they…

Human-Computer Interaction · Computer Science 2021-10-19 Deepak Gopinath , Guy Rosman , Simon Stent , Katsuya Terahata , Luke Fletcher , Brenna Argall , John Leonard

Generative adversarial network (GAN) is formulated as a two-player game between a generator (G) and a discriminator (D), where D is asked to differentiate whether an image comes from real data or is produced by G. Under such a formulation,…

Computer Vision and Pattern Recognition · Computer Science 2023-06-08 Qingyan Bai , Ceyuan Yang , Yinghao Xu , Xihui Liu , Yujiu Yang , Yujun Shen

Most of the current complex networks that are of interest to practitioners possess a certain community structure that plays an important role in understanding the properties of these networks. Moreover, many machine learning algorithms and…

Social and Information Networks · Computer Science 2021-02-17 Bogumił Kamiński , Paweł Prałat , François Théberge

The field of Human Activity Recognition (HAR) focuses on obtaining and analysing data captured from monitoring devices (e.g. sensors). There is a wide range of applications within the field; for instance, assisted living, security…

Machine Learning · Computer Science 2020-05-18 Flávia Alves , Martin Gairing , Frans A. Oliehoek , Thanh-Toan Do

Diversity or complementarity of experts in ensemble pattern recognition and information processing systems is widely-observed by researchers to be crucial for achieving performance improvement upon fusion. Understanding this link between…

Machine Learning · Statistics 2013-12-31 Kartik Audhkhasi , Abhinav Sethy , Bhuvana Ramabhadran , Shrikanth S. Narayanan

Detection of communities in a graph entails identifying clusters of densely connected vertices; the area has a variety of important applications and a rich literature. The problem has previously been situated in the realm of error…

Social and Information Networks · Computer Science 2025-07-23 Allison Beemer , Jessalyn Bolkema

In the context of modern machine learning, models deployed in real-world scenarios often encounter diverse data shifts like covariate and semantic shifts, leading to challenges in both out-of-distribution (OOD) generalization and detection.…

Machine Learning · Computer Science 2024-09-30 Han Wang , Yixuan Li

Human activity recognition based on the computer vision is the process of labelling image sequences with action labels. Accurate systems for this problem are applied in areas such as visual surveillance, human computer interaction and video…

Computer Vision and Pattern Recognition · Computer Science 2014-08-15 Jay Prakash Gupta , Pushkar Dixit , Nishant Singh , Vijay Bhaskar Semwal

In this paper, we present an approach in the Multimodal Learning Analytics field. Within this approach, we have developed a tool to visualize and analyze eye movement data collected during learning sessions in online courses. The tool is…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Miriam Navarro , Álvaro Becerra , Roberto Daza , Ruth Cobos , Aythami Morales , Julian Fierrez

Graph Anomaly Detection (GAD) has recently become a hot research spot due to its practicability and theoretical value. Since GAD emphasizes the application and the rarity of anomalous samples, enriching the varieties of its datasets is…

Social and Information Networks · Computer Science 2023-06-12 Xuanwen Huang , Yang Yang , Yang Wang , Chunping Wang , Zhisheng Zhang , Jiarong Xu , Lei Chen , Michalis Vazirgiannis

Group activity recognition is a crucial yet challenging problem, whose core lies in fully exploring spatial-temporal interactions among individuals and generating reasonable group representations. However, previous methods either model…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Shuaicheng Li , Qianggang Cao , Lingbo Liu , Kunlin Yang , Shinan Liu , Jun Hou , Shuai Yi

In this work, we take aim towards increasing the effectiveness of surgical assistant robots. We intended to make assistant robots safer by making them aware about the actions of surgeon, so it can take appropriate assisting actions. In…

Social interactions often emerge from subtle, fine-grained cues such as facial expressions, gaze, and gestures. However, existing methods for social interaction detection overlook such nuanced cues and primarily rely on holistic…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Dongkeun Kim , Minsu Cho , Suha Kwak

Traditional temporal action detection (TAD) usually handles untrimmed videos with small number of action instances from a single label (e.g., ActivityNet, THUMOS). However, this setting might be unrealistic as different classes of actions…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Jing Tan , Xiaotong Zhao , Xintian Shi , Bin Kang , Limin Wang

Skeleton-based video anomaly detection (SVAD) is a crucial task in computer vision. Accurately identifying abnormal patterns or events enables operators to promptly detect suspicious activities, thereby enhancing safety. Achieving this…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Ali Karami , Thi Kieu Khanh Ho , Narges Armanfard

Human activity understanding is crucial for building automatic intelligent system. With the help of deep learning, activity understanding has made huge progress recently. But some challenges such as imbalanced data distribution, action…

Computer Vision and Pattern Recognition · Computer Science 2019-08-07 Yong-Lu Li , Liang Xu , Xinpeng Liu , Xijie Huang , Yue Xu , Mingyang Chen , Ze Ma , Shiyi Wang , Hao-Shu Fang , Cewu Lu
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