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We present an algorithm for L1-norm kernel PCA and provide a convergence analysis for it. While an optimal solution of L2-norm kernel PCA can be obtained through matrix decomposition, finding that of L1-norm kernel PCA is not trivial due to…

机器学习 · 统计学 2020-06-12 Cheolmin Kim , Diego Klabjan

In this paper we present methods for exemplar based clustering with outlier selection based on the facility location formulation. Given a distance function and the number of outliers to be found, the methods automatically determine the…

机器学习 · 计算机科学 2014-03-07 Lionel Ott , Linsey Pang , Fabio Ramos , David Howe , Sanjay Chawla

Online metric learning has been widely applied in classification and retrieval. It can automatically learn a suitable metric from data by restricting similar instances to be separated from dissimilar instances with a given margin. However,…

计算机视觉与模式识别 · 计算机科学 2023-08-28 Wenbin Li , Yanfang Liu , Jing Huo , Yinghuan Shi , Yang Gao , Lei Wang , Jiebo Luo

To address functional-output regression, we introduce projection learning (PL), a novel dictionary-based approach that learns to predict a function that is expanded on a dictionary while minimizing an empirical risk based on a functional…

机器学习 · 统计学 2022-02-09 Dimitri Bouche , Marianne Clausel , François Roueff , Florence d'Alché-Buc

This paper addresses the inherent limitations of conventional bottleneck structures (diminished instance discriminability due to overemphasis on batch statistics) and decoupled heads (computational redundancy) in object detection frameworks…

计算机视觉与模式识别 · 计算机科学 2025-07-30 Lin Huang , Yujuan Tan , Weisheng Li , Shitai Shan , Liu Liu , Linlin Shen , Jing Yu , Yue Niu

Leave-one-problem-out (LOPO) performance prediction requires machine learning (ML) models to extrapolate algorithms' performance from a set of training problems to a previously unseen problem. LOPO is a very challenging task even for…

机器学习 · 计算机科学 2023-06-01 Ana Nikolikj , Michal Pluháček , Carola Doerr , Peter Korošec , Tome Eftimov

Outlier detection is an essential capability in safety-critical applications of supervised visual recognition. Most of the existing methods deliver best results by encouraging standard closed-set models to produce low-confidence predictions…

计算机视觉与模式识别 · 计算机科学 2024-09-10 Anja Delić , Matej Grcić , Siniša Šegvić

Prototype-based methods are of the particular interest for domain specialists and practitioners as they summarize a dataset by a small set of representatives. Therefore, in a classification setting, interpretability of the prototypes is as…

机器学习 · 计算机科学 2019-11-12 Babak Hosseini , Barbara Hammer

With the rapid development of multi-cloud environments, it is increasingly important to ensure the security and reliability of intelligent monitoring systems. In this paper, we propose an anomaly detection and early warning mechanism for…

机器学习 · 计算机科学 2025-06-10 Yihong Jin , Ze Yang , Juntian Liu , Xinhe Xu

The bilevel facility location problem (BO-FLP) is one of the core optimization problems behind the design of many decentralized industrial systems, e.g., supply chain systems where a supplier constructs some critical facilities and then…

最优化与控制 · 数学 2026-03-24 Haitao Hu , Jing Li , Jiafu Tang , Bo Zeng

Outlier recognition is a fundamental problem in data analysis and has attracted a great deal of attention in the past decades. However, most existing methods still suffer from several issues such as high time and space complexities or…

计算几何 · 计算机科学 2019-04-09 Hu Ding , Mingquan Ye

We present a novel methodology able to distinguish meaningful level shifts from typical signal fluctuations. A two-stage regularization filtering can accurately identify the location of the significant level-shifts with an efficient…

应用统计 · 统计学 2019-10-10 Jean Pierre von der Weid , Mario H. Souto , Joaquim D. Garcia , Gustavo C. Amaral

Clustering is a fundamental tool in unsupervised learning, used to group objects by distinguishing between similar and dissimilar features of a given data set. One of the most common clustering algorithms is k-means. Unfortunately, when…

机器学习 · 统计学 2021-08-17 Olga Dorabiala , J. Nathan Kutz , Aleksandr Aravkin

This work introduces a multi-output classification (MOC) framework designed for domain adaptation in fault diagnosis, particularly under partially labeled (PL) target domain scenarios and compound fault conditions in rotating machinery.…

机器学习 · 计算机科学 2025-04-18 Wonjun Yi , Yong-Hwa Park

Occupancy models involve both the probability a site is occupied and the probability occupancy is detected. The homogeneous occupancy model, where the occupancy and detection probabilities are the same at each site, admits an orthogonal…

统计方法学 · 统计学 2018-08-10 N. Karavarsamis , R. M. Huggins

Sparse and outlier-robust Principal Component Analysis (PCA) has been a very active field of research recently. Yet, most existing methods apply PCA to a single dataset whereas multi-source data-i.e. multiple related datasets requiring…

统计方法学 · 统计学 2026-02-26 Patricia Puchhammer , Ines Wilms , Peter Filzmoser

This paper introduces LLM-Streamline, a pioneer work on layer pruning for large language models (LLMs). It is based on the observation that different layers have varying impacts on hidden states, enabling the identification of less…

计算与语言 · 计算机科学 2025-01-28 Xiaodong Chen , Yuxuan Hu , Jing Zhang , Yanling Wang , Cuiping Li , Hong Chen

Local Polynomial Regression (LPR) is a widely used nonparametric method for modeling complex relationships due to its flexibility and simplicity. It estimates a regression function by fitting low-degree polynomials to localized subsets of…

统计方法学 · 统计学 2025-07-22 Yaniv Shulman

In image classification tasks, the evaluation of models' robustness to increased dataset shifts with a probabilistic framework is very well studied. However, object detection (OD) tasks pose other challenges for uncertainty estimation and…

计算机视觉与模式识别 · 计算机科学 2020-11-09 Tiago Azevedo , René de Jong , Matthew Mattina , Partha Maji

DDCL-Attention is a prototype-based readout layer for transformer encoders that replaces simple pooling methods, such as mean pooling or class tokens, with a learned compression mechanism. It uses a small set of global prototype vectors and…

机器学习 · 计算机科学 2026-04-07 Giansalvo Cirrincione , Rahul Ranjeev Kumar