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Classical methods such as Principal Component Analysis (PCA) and Canonical Correlation Analysis (CCA) are ubiquitous in statistics. However, these techniques are only able to reveal linear relationships in data. Although nonlinear variants…

Machine Learning · Statistics 2014-05-14 David Lopez-Paz , Suvrit Sra , Alex Smola , Zoubin Ghahramani , Bernhard Schölkopf

Universal induction relies on some general search procedure that is doomed to be inefficient. One possibility to achieve both generality and efficiency is to specialize this procedure w.r.t. any given narrow task. However, complete…

Neural and Evolutionary Computing · Computer Science 2018-09-13 Alexey Potapov , Sergey Rodionov

Distributional shift between domains poses great challenges to modern machine learning algorithms. The domain generalization (DG) signifies a popular line targeting this issue, where these methods intend to uncover universal patterns across…

Computer Vision and Pattern Recognition · Computer Science 2023-10-05 Hao Chen , Qi Zhang , Zenan Huang , Haobo Wang , Junbo Zhao

Generalized Canonical Correlation Analysis (GCCA) is an important tool that finds numerous applications in data mining, machine learning, and artificial intelligence. It aims at finding `common' random variables that are strongly correlated…

Machine Learning · Computer Science 2021-05-19 Mikael Sørensen , Charilaos I. Kanatsoulis , Nicholas D. Sidiropoulos

Data augmentation (DA) techniques aim to increase data variability, and thus train deep networks with better generalisation. The pioneering AutoAugment automated the search for optimal DA policies with reinforcement learning. However,…

Computer Vision and Pattern Recognition · Computer Science 2020-07-31 Yonggang Li , Guosheng Hu , Yongtao Wang , Timothy Hospedales , Neil M. Robertson , Yongxin Yang

Quadratic discriminant analysis (QDA) is a standard tool for classification due to its simplicity and flexibility. Because the number of its parameters scales quadratically with the number of the variables, QDA is not practical, however,…

Methodology · Statistics 2018-09-06 Binyan Jiang , Xiangyu Wang , Chenlei Leng

Generalized linear model with $L_1$ and $L_2$ regularization is a widely used technique for solving classification, class probability estimation and regression problems. With the numbers of both features and examples growing rapidly in the…

Machine Learning · Statistics 2017-06-28 Ilya Trofimov , Alexander Genkin

Recent studies have shown that graph neural networks (GNNs) are vulnerable against perturbations due to lack of robustness and can therefore be easily fooled. Currently, most works on attacking GNNs are mainly using gradient information to…

Machine Learning · Computer Science 2021-05-07 Jintang Li , Tao Xie , Liang Chen , Fenfang Xie , Xiangnan He , Zibin Zheng

Deep learning (DL) has emerged as a crucial tool in network anomaly detection (NAD) for cybersecurity. While DL models for anomaly detection excel at extracting features and learning patterns from data, they are vulnerable to data…

For fine-grained categorization tasks, videos could serve as a better source than static images as videos have a higher chance of containing discriminative patterns. Nevertheless, a video sequence could also contain a lot of redundant and…

Computer Vision and Pattern Recognition · Computer Science 2018-10-29 Chen Zhu , Xiao Tan , Feng Zhou , Xiao Liu , Kaiyu Yue , Errui Ding , Yi Ma

Since DNN is vulnerable to carefully crafted adversarial examples, adversarial attack on LiDAR sensors have been extensively studied. We introduce a robust black-box attack dubbed LiDAttack. It utilizes a genetic algorithm with a simulated…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Jinyin Chen , Danxin Liao , Sheng Xiang , Haibin Zheng

Deep convolutional neural network models pre-trained for the ImageNet classification task have been successfully adopted to tasks in other domains, such as texture description and object proposal generation, but these tasks require…

Computer Vision and Pattern Recognition · Computer Science 2017-07-14 Xiu-Shen Wei , Jian-Hao Luo , Jianxin Wu , Zhi-Hua Zhou

Forensic analysis of manipulated pixels requires the identification of various hidden and subtle features from images. Conventional image recognition models generally fail at this task because they are biased and more attentive toward the…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Sowmen Das , Md. Saiful Islam , Md. Ruhul Amin

Deep neural networks for classification are vulnerable to adversarial attacks, where small perturbations to input samples lead to incorrect predictions. This susceptibility, combined with the black-box nature of such networks, limits their…

Cryptography and Security · Computer Science 2024-08-28 Dipkamal Bhusal , Md Tanvirul Alam , Monish K. Veerabhadran , Michael Clifford , Sara Rampazzi , Nidhi Rastogi

Researchers in the behavioral and social sciences use linear discriminant analysis (LDA) for predictions of group membership (classification) and for identifying the variables most relevant to group separation among a set of continuous…

Methodology · Statistics 2025-05-28 Ricarda Graf , Marina Zeldovich , Sarah Friedrich

Recent advances in synthetic data generation (SDG) have been hailed as a solution to the difficult problem of sharing sensitive data while protecting privacy. SDG aims to learn statistical properties of real data in order to generate…

Machine Learning · Computer Science 2024-05-10 Meenatchi Sundaram Muthu Selva Annamalai , Andrea Gadotti , Luc Rocher

Recent work on adversarial attack has shown that Projected Gradient Descent (PGD) Adversary is a universal first-order adversary, and the classifier adversarially trained by PGD is robust against a wide range of first-order attacks. It is…

Machine Learning · Computer Science 2018-12-07 Tianhang Zheng , Changyou Chen , Kui Ren

Quadratic and Linear Discriminant Analysis (QDA/LDA) are the most often applied classification rules under normality. In QDA, a separate covariance matrix is estimated for each group. If there are more variables than observations in the…

Methodology · Statistics 2016-12-26 Stéphanie Aerts , Ines Wilms

We consider the problem of identifying patterns in a data set that exhibit anomalous behavior, often referred to as anomaly detection. In most anomaly detection algorithms, the dissimilarity between data samples is calculated by a single…

Machine Learning · Computer Science 2013-01-08 Ko-Jen Hsiao , Kevin S. Xu , Jeff Calder , Alfred O. Hero

An Intrusion detection system (IDS) is essential for avoiding malicious activity. Mostly, IDS will be improved by machine learning approaches, but the model efficiency is degrading because of more headers (or features) present in the packet…

Cryptography and Security · Computer Science 2023-04-04 Swapnil Mane , Vaibhav Khatavkar , Niranjan Gijare , Pranav Bhendawade