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With the rapid development of the Internet, various types of anomaly traffic are threatening network security. We consider the problem of anomaly network traffic detection and propose a three-stage anomaly detection framework using only…

机器学习 · 计算机科学 2024-03-19 Zhangxuan Dang , Yu Zheng , Xinglin Lin , Chunlei Peng , Qiuyu Chen , Xinbo Gao

The goal of anomaly detection is to identify examples that deviate from normal or expected behavior. We tackle this problem for images. We consider a two-phase approach. First, using normal examples, a convolutional autoencoder (CAE) is…

计算机视觉与模式识别 · 计算机科学 2020-03-20 Natasa Sarafijanovic-Djukic , Jesse Davis

Autoencoders are unsupervised models which have been used for detecting anomalies in multi-sensor environments. A typical use includes training a predictive model with data from sensors operating under normal conditions and using the model…

机器学习 · 计算机科学 2021-07-29 Bang Xiang Yong , Yasmin Fathy , Alexandra Brintrup

Due to its relevance in intelligent transportation systems, anomaly detection in traffic videos has recently received much interest. It remains a difficult problem due to a variety of factors influencing the video quality of a real-time…

计算机视觉与模式识别 · 计算机科学 2021-04-21 Keval Doshi , Yasin Yilmaz

Anomaly detection in surveillance videos is currently a challenge because of the diversity of possible events. We propose a deep convolutional neural network (CNN) that addresses this problem by learning a correspondence between common…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Trong Nguyen Nguyen , Jean Meunier

Providing an efficient strategy to navigate safely through unsignaled intersections is a difficult task that requires determining the intent of other drivers. We explore the effectiveness of Deep Reinforcement Learning to handle…

人工智能 · 计算机科学 2018-02-28 David Isele , Reza Rahimi , Akansel Cosgun , Kaushik Subramanian , Kikuo Fujimura

Due to the rare occurrence of anomalous events, a typical approach to anomaly detection is to train an autoencoder (AE) with normal data only so that it learns the patterns or representations of the normal training data. At test time, the…

机器学习 · 计算机科学 2024-05-20 Marcella Astrid , Muhammad Zaigham Zaheer , Djamila Aouada , Seung-Ik Lee

Understanding the intentions of drivers at intersections is a critical component for autonomous vehicles. Urban intersections that do not have traffic signals are a common epicentre of highly variable vehicle movement and interactions. We…

计算机视觉与模式识别 · 计算机科学 2018-07-27 Alex Zyner , Stewart Worrall , Eduardo Nebot

Anomaly detection in time series is a complex task that has been widely studied. In recent years, the ability of unsupervised anomaly detection algorithms has received much attention. This trend has led researchers to compare only…

机器学习 · 计算机科学 2022-09-13 Julien Audibert , Pietro Michiardi , Frédéric Guyard , Sébastien Marti , Maria A. Zuluaga

Anomaly detection from a driver's perspective when driving is important to autonomous vehicles. As a part of Advanced Driver Assistance Systems (ADAS), it can remind the driver about dangers timely. Compared with traditional studied scenes…

计算机视觉与模式识别 · 计算机科学 2019-05-01 Yuan Yuan , Dong Wang , Qi Wang

In the recent times, autoencoders, besides being used for compression, have been proven quite useful even for regenerating similar images or help in image denoising. They have also been explored for anomaly detection in a few cases.…

计算机视觉与模式识别 · 计算机科学 2018-04-03 Shruti Mittal , Dattaraj Rao

Trajectory anomaly detection is crucial for effective decision-making in urban and human mobility management. Existing methods of trajectory anomaly detection generally focus on training a trajectory generative model and evaluating the…

机器学习 · 计算机科学 2024-10-28 Haoji Hu , Jina Kim , Jinwei Zhou , Sofia Kirsanova , JangHyeon Lee , Yao-Yi Chiang

Classifying time series data using neural networks is a challenging problem when the length of the data varies. Video object trajectories, which are key to many of the visual surveillance applications, are often found to be of varying…

计算机视觉与模式识别 · 计算机科学 2018-12-19 Santhosh Kelathodi Kumaran , Debi Prosad Dogra , Partha Pratim Roy , Adway Mitra

We focus on a specific use case in anomaly detection where the distribution of normal samples is supported by a lower-dimensional manifold. Here, regularized autoencoders provide a popular approach by learning the identity mapping on the…

计算机视觉与模式识别 · 计算机科学 2024-05-14 Alexander Bauer , Shinichi Nakajima , Klaus-Robert Müller

In this paper, an LSTM autoencoder-based architecture is utilized for drowsiness detection with ResNet-34 as feature extractor. The problem is considered as anomaly detection for a single subject; therefore, only the normal driving…

计算机视觉与模式识别 · 计算机科学 2022-09-13 Gülin Tüfekci , Alper Kayabaşi , Erdem Akagündüz , İlkay Ulusoy

Advanced driver assistance systems (ADAS) can be significantly improved with effective driver action prediction (DAP). Predicting driver actions early and accurately can help mitigate the effects of potentially unsafe driving behaviors and…

机器学习 · 统计学 2018-06-01 Oluwatobi Olabiyi , Eric Martinson , Vijay Chintalapudi , Rui Guo

This paper studies the problem of detecting anomalous graphs using a machine learning model trained on only normal graphs, which has many applications in molecule, biology, and social network data analysis. We present a self-discriminative…

机器学习 · 计算机科学 2023-10-11 Jinyu Cai , Yunhe Zhang , Jicong Fan

As with many other tasks, neural networks prove very effective for anomaly detection purposes. However, very few deep-learning models are suited for detecting anomalies on tabular datasets. This paper proposes a novel methodology to flag…

机器学习 · 计算机科学 2024-01-31 Hugo Thimonier , Fabrice Popineau , Arpad Rimmel , Bich-Liên Doan , Fabrice Daniel

Deep learning has been successfully applied to several problems related to autonomous driving. Often, these solutions rely on large networks that require databases of real image samples of the problem (i.e., real world) for proper training.…

计算机视觉与模式识别 · 计算机科学 2020-07-13 Lucas Tabelini Torres , Thiago M. Paixão , Rodrigo F. Berriel , Alberto F. De Souza , Claudine Badue , Nicu Sebe , Thiago Oliveira-Santos

Identifying unusual driving behaviors exhibited by drivers during driving is essential for understanding driver behavior and the underlying causes of crashes. Previous studies have primarily approached this problem as a classification task,…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Armstrong Aboah , Ulas Bagci , Abdul Rashid Mussah , Neema Jakisa Owor , Yaw Adu-Gyamfi