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This paper proposes a method for assessing differential item functioning (DIF) in item response theory (IRT) models. The method does not require pre-specification of anchor items, which is its main virtue. It is developed in two main steps,…

统计方法学 · 统计学 2025-01-08 Peter F. Halpin

Federated learning (FL) enables multiple clients to collaboratively train deep learning models while considering sensitive local datasets' privacy. However, adversaries can manipulate datasets and upload models by injecting triggers for…

机器学习 · 计算机科学 2023-07-04 Zekai Chen , Fuyi Wang , Zhiwei Zheng , Ximeng Liu , Yujie Lin

We propose a new method, named isolation Mondrian forest (iMondrian forest), for batch and online anomaly detection. The proposed method is a novel hybrid of isolation forest and Mondrian forest which are existing methods for batch anomaly…

机器学习 · 计算机科学 2021-11-02 Haoran Ma , Benyamin Ghojogh , Maria N. Samad , Dongyu Zheng , Mark Crowley

Multivariate time-series anomaly detection, which is critical for identifying unexpected events, has been explored in the field of machine learning for several decades. However, directly applying these methods to data from forceful tool use…

机器人学 · 计算机科学 2025-09-19 Yating Lin , Zixuan Huang , Fan Yang , Dmitry Berenson

Federated learning (FL), with the growing IoT and edge computing, is seen as a promising solution for applications that are latency- and privacy-aware. However, due to the widespread dispersion of data across many clients, it is challenging…

机器学习 · 计算机科学 2024-11-05 Dipanwita Thakur , Antonella Guzzo , Giancarlo Fortino

Anomaly detection (AD), also referred to as outlier detection, is a statistical process aimed at identifying observations within a dataset that significantly deviate from the expected pattern of the majority of the data. Such a process…

Due to the size and nature of intrusion detection datasets, intrusion detection systems (IDS) typically take high computational complexity to examine features of data and identify intrusive patterns. Data preprocessing techniques such as…

密码学与安全 · 计算机科学 2020-09-29 Mubarak Albarka Umar , Chen Zhanfang , Yan Liu

This paper explores the utility of diffusion-based models for anomaly detection, focusing on their efficacy in identifying deviations in both compact and high-resolution datasets. Diffusion-based architectures, including Denoising Diffusion…

机器学习 · 计算机科学 2024-12-11 Aryan Bhosale , Samrat Mukherjee , Biplab Banerjee , Fabio Cuzzolin

Imitation learning (IL) policies in robotics deliver strong performance in controlled settings but remain brittle in real-world deployments: rare events such as hardware faults, defective parts, unexpected human actions, or any state that…

机器人学 · 计算机科学 2026-04-16 Quentin Rolland , Fabrice Mayran de Chamisso , Jean-Baptiste Mouret

Forest pests threaten ecosystem stability, requiring efficient monitoring. To overcome the limitations of traditional methods in large-scale, fine-grained detection, this study focuses on accurately identifying infected trees and analyzing…

计算机视觉与模式识别 · 计算机科学 2025-12-16 Yan Zhang , Baoxin Li , Han Sun , Yuhang Gao , Mingtai Zhang , Pei Wang

This paper proposes a novel fault detection and isolation (FDI) scheme for distributed parameter systems modeled by a class of parabolic partial differential equations (PDEs) with nonlinear uncertain dynamics. A key feature of the proposed…

系统与控制 · 电气工程与系统科学 2022-03-31 Jingting Zhang , Chengzhi Yuan , Wei Zeng , Cong Wang

Fuzzy rough feature selection (FRFS) is an effective means of addressing the curse of dimensionality in high-dimensional data. By removing redundant and irrelevant features, FRFS helps mitigate classifier overfitting, enhance generalization…

机器学习 · 计算机科学 2025-05-22 Suping Xu , Lin Shang , Keyu Liu , Hengrong Ju , Xibei Yang , Witold Pedrycz

A central challenge in analyzing multivariate interactions within complex systems is to decompose how multiple inputs jointly determine an output. Existing approaches generally operate on observed probability distributions and can conflate…

信息论 · 计算机科学 2026-03-19 Clifford Bohm , Vincent R. Ragusa , Arend Hintze , Charles Ofria , Emily Dolson , Christoph Adami

3D anomaly detection (AD) is a crucial task in computer vision, aiming to identify anomalous points or regions from point cloud data. However, existing methods may encounter challenges when handling point clouds with changes in orientation…

计算机视觉与模式识别 · 计算机科学 2025-12-16 Hanzhe Liang , Jie Zhou , Can Gao , Bingyang Guo , Jinbao Wang , Linlin Shen

Unsupervised anomaly detection is vital in industrial fields, with reconstruction-based methods favored for their simplicity and effectiveness. However, reconstruction methods often encounter an identical shortcut issue, where both normal…

计算机视觉与模式识别 · 计算机科学 2026-03-25 Wei Luo , Haiming Yao , Zhenfeng Qiang , Xiaotian Zhang , Weihang Zhang

Learning-based Network Intrusion Detection Systems (NIDSs) are widely deployed for defending various cyberattacks. Existing learning-based NIDS mainly uses Neural Network (NN) as a classifier that relies on the quality and quantity of…

密码学与安全 · 计算机科学 2022-01-11 Tian Dong , Song Li , Han Qiu , Jialiang Lu

The goal of federated learning (FL) is to train one global model by aggregating model parameters updated independently on edge devices without accessing users' private data. However, FL is susceptible to backdoor attacks where a small…

密码学与安全 · 计算机科学 2022-02-24 Yein Kim , Huili Chen , Farinaz Koushanfar

One of the key challenges of machine learning (ML) based intrusion detection system (IDS) is the expensive computational complexity which is largely due to redundant, incomplete, and irrelevant features contain in the IDS datasets. To…

密码学与安全 · 计算机科学 2020-08-19 Mubarak Albarka Umar , Chen Zhanfang , Yan Liu

Accurate identification of deforestation from satellite images is essential in order to understand the geographical situation of an area. This paper introduces a new distributed approach to identify as well as locate deforestation across…

计算机视觉与模式识别 · 计算机科学 2025-09-18 Yuvraj Dutta , Aaditya Sikder , Basabdatta Palit

Despite the prevalence of reconstruction-based deep learning methods, time series anomaly detection remains a tremendous challenge. Existing approaches often struggle with limited temporal contexts, insufficient representation of normal…

机器学习 · 计算机科学 2025-07-16 Zhijie Zhong , Zhiwen Yu , Xing Xi , Yue Xu , Wenming Cao , Yiyuan Yang , Kaixiang Yang , Jane You