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The rapid growth of deep learning (DL) has spurred interest in enhancing log-based anomaly detection. This approach aims to extract meaning from log events (log message templates) and develop advanced DL models for anomaly detection.…

机器学习 · 计算机科学 2024-02-01 Lin Yang , Junjie Chen , Shutao Gao , Zhihao Gong , Hongyu Zhang , Yue Kang , Huaan Li

Principal component analysis (PCA) is a classical dimension reduction method which projects data onto the principal subspace spanned by the leading eigenvectors of the covariance matrix. However, it behaves poorly when the number of…

统计理论 · 数学 2013-05-27 Zongming Ma

Factor analysis and principal component analysis (PCA) are used in many application areas. The first step, choosing the number of components, remains a serious challenge. Our work proposes improved methods for this important problem. One of…

统计方法学 · 统计学 2019-09-17 Edgar Dobriban , Art B. Owen

This paper reduces the cost of DNNs training by decreasing the amount of data movement across heterogeneous architectures composed of several GPUs and multicore CPU devices. In particular, this paper proposes an algorithm to dynamically…

分布式、并行与集群计算 · 计算机科学 2020-04-07 Sicong Zhuang , Cristiano Malossi , Marc Casas

Deep neural networks (DNNs) deliver outstanding performance, but their complexity often prohibits deployment in resource-constrained settings. Comprehensive structured pruning frameworks based on parameter dependency analysis reduce model…

机器学习 · 计算机科学 2025-07-22 Ganesh Sundaram , Jonas Ulmen , Daniel Görges

Terahertz (THz) systems inherently introduce frequency-dependent degradation effects, resulting in low-frequency blurring and high-frequency noise in amplitude images. Conventional image processing techniques cannot simultaneously address…

计算机视觉与模式识别 · 计算机科学 2026-02-25 Pengfei Zhu , Stefano Sfarra , Hai Zhang , Carlo Santulli , Elana Pivarciova , Fabrizio Sarasini , Xavier Maldague

Principal component analysis (PCA) is a classical feature extraction method, but it may be adversely affected by outliers, resulting in inaccurate learning of the projection matrix. This paper proposes a robust method to estimate both the…

机器学习 · 计算机科学 2024-08-23 Yingzhuo Deng , Ke Hu , Bo Li , Yao Zhang

End-to-end performance estimation and measurement of deep neural network (DNN) systems become more important with increasing complexity of DNN systems consisting of hardware and software components. The methodology proposed in this paper…

Recent works show that overparameterized networks contain small subnetworks that exhibit comparable accuracy to the full model when trained in isolation. These results highlight the potential to reduce training costs of deep neural networks…

机器学习 · 计算机科学 2020-06-25 Roger Waleffe , Theodoros Rekatsinas

In this paper, we consider the problem of forming machine cell in cellular manufacturing (CM). The major problem in the design of a CM system is to identify the part families and machine groups and consequently to form manufacturing cells.…

应用统计 · 统计学 2008-12-18 Wafik Hachicha , Faouzi Masmoudi , Mohamed Haddar

Principal Component Analysis (PCA) is a foundational technique in machine learning for dimensionality reduction of high-dimensional datasets. However, PCA could lead to biased outcomes that disadvantage certain subgroups of the underlying…

机器学习 · 计算机科学 2025-03-04 Junhui Shen , Aaron J. Davis , Ding Lu , Zhaojun Bai

Magnetic resonance imaging (MRI) is a non-invasive medical imaging technique offering high-resolution 3D images and valuable insights into human tissue conditions. Even at present, the refinement of denoising methods for MRI remains a…

图像与视频处理 · 电气工程与系统科学 2023-08-29 Shiao Li

STEM XEDS spectrum images can be drastically denoised by application of the principal component analysis (PCA). This paper looks inside the PCA workflow step by step on an example of a complex semiconductor structure consisting of a number…

图像与视频处理 · 电气工程与系统科学 2019-10-16 Pavel Potapov , Axel Lubk

Privacy-preserving data mining has become an important topic. People have built several multi-party-computation (MPC)-based frameworks to provide theoretically guaranteed privacy, the poor performance of real-world algorithms have always…

密码学与安全 · 计算机科学 2021-05-18 Xiaoyu Fan , Guosai Wang , Kun Chen , Xu He , Wei Xu

Principal component analysis (PCA) is a widely used unsupervised dimensionality reduction technique in machine learning, applied across various fields such as bioinformatics, computer vision and finance. However, when the response variables…

应用统计 · 统计学 2025-06-25 Theodosios Papazoglou , Guosheng Yin

Optimizing fluid-dynamic performance is an important engineering task. Traditionally, experts design shapes based on empirical estimations and verify them through expensive experiments. This costly process, both in terms of time and space,…

计算工程、金融与科学 · 计算机科学 2020-01-24 Yang Chen

Principal Component Analysis (PCA) is an important tool of dimension reduction especially when the dimension (or the number of variables) is very high. Asymptotic studies where the sample size is fixed, and the dimension grows [i.e., High…

统计理论 · 数学 2009-11-20 Sungkyu Jung , J. S. Marron

Principal Component Analysis (PCA) aims to find subspaces spanned by the so-called principal components that best represent the variance in the dataset. The deflation method is a popular meta-algorithm that sequentially finds individual…

机器学习 · 计算机科学 2024-05-30 Fangshuo Liao , Junhyung Lyle Kim , Cruz Barnum , Anastasios Kyrillidis

We propose a new data-driven method to select the optimal number of relevant components in Principal Component Analysis (PCA). This new method applies to correlation matrices whose time autocorrelation function decays more slowly than an…

统计金融 · 定量金融 2019-10-07 Anshul Verma , Pierpaolo Vivo , Tiziana Di Matteo

Sparse principal component analysis (PCA) is an important technique for dimensionality reduction of high-dimensional data. However, most existing sparse PCA algorithms are based on non-convex optimization, which provide little guarantee on…

统计方法学 · 统计学 2019-11-20 Yixuan Qiu , Jing Lei , Kathryn Roeder
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