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The analysis of tabular data has traditionally been dominated by gradient-boosted decision trees (GBDTs), known for their proficiency with mixed categorical and numerical features. However, recent deep learning innovations are challenging…

Time series anomaly detection (TSAD) has been a research hotspot in both academia and industry in recent years. Deep learning methods have become the mainstream research direction due to their excellent performance. However, new viewpoints…

机器学习 · 计算机科学 2024-12-10 Pengyu Li , Zhijie Zhong , Tong Zhang , Zhiwen Yu , C. L. Philip Chen , Kaixiang Yang

Quadratic discriminant analysis (QDA) is a widely used classification technique that generalizes the linear discriminant analysis (LDA) classifier to the case of distinct covariance matrices among classes. For the QDA classifier to yield…

机器学习 · 计算机科学 2020-06-26 Houssem Sifaou , Abla Kammoun , Mohamed-Slim Alouini

Anomaly detection in temporal data from sensors under aviation scenarios is a practical but challenging task: 1) long temporal data is difficult to extract contextual information with temporal correlation; 2) the anomalous data are rare in…

计算机视觉与模式识别 · 计算机科学 2023-05-18 Hao Yang , Junyu Gao , Yuan Yuan , Xuelong Li

Recently computer-aided diagnosis has demonstrated promising performance, effectively alleviating the workload of clinicians. However, the inherent sample imbalance among different diseases leads algorithms biased to the majority…

计算机视觉与模式识别 · 计算机科学 2025-02-10 Li Pan , Yupei Zhang , Qiushi Yang , Tan Li , Zhen Chen

We propose a new semi-supervised learning method on face-related tasks based on Multi-Task Learning (MTL) and data distillation. The proposed method exploits multiple datasets with different labels for different-but-related tasks such as…

计算机视觉与模式识别 · 计算机科学 2019-07-10 Sepidehsadat Hosseini , Mohammad Amin Shabani , Nam Ik Cho

In recent years, a variety of gradient-based first-order methods have been developed to solve bi-level optimization problems for learning applications. However, theoretical guarantees of these existing approaches heavily rely on the…

机器学习 · 计算机科学 2020-07-03 Risheng Liu , Pan Mu , Xiaoming Yuan , Shangzhi Zeng , Jin Zhang

The state-of-the-art in time series classification has come a long way, from the 1NN-DTW algorithm to the ROCKET family of classifiers. However, in the current fast-paced development of new classifiers, taking a step back and performing…

机器学习 · 计算机科学 2023-08-16 Bhaskar Dhariyal , Thach Le Nguyen , Georgiana Ifrim

Multi-task learning (MTL) is a methodology that aims to improve the general performance of estimation and prediction by sharing common information among related tasks. In the MTL, there are several assumptions for the relationships and…

统计方法学 · 统计学 2023-04-27 Akira Okazaki , Shuichi Kawano

Skeleton-based action recognition faces two longstanding challenges: the scarcity of labeled training samples and difficulty modeling short- and long-range temporal dependencies. To address these issues, we propose a unified framework,…

计算机视觉与模式识别 · 计算机科学 2025-09-19 Feng Ding , Haisheng Fu , Soroush Oraki , Jie Liang

Deep neural networks are increasingly being used to detect and diagnose medical conditions using medical imaging. Despite their utility, these models are highly vulnerable to adversarial attacks and distribution shifts, which can affect…

图像与视频处理 · 电气工程与系统科学 2025-06-23 Josué Martínez-Martínez , Olivia Brown , Mostafa Karami , Sheida Nabavi

In the realm of Duplicate Bug Report Detection (DBRD), conventional methods primarily focus on statically analyzing bug databases, often disregarding the running time of the model. In this context, complex models, despite their high…

软件工程 · 计算机科学 2024-04-24 Qianru Meng , Xiao Zhang , Guus Ramackers , Visser Joost

Probabilistic learning is increasingly being tackled as an optimization problem, with gradient-based approaches as predominant methods. When modelling multivariate likelihoods, a usual but undesirable outcome is that the learned model fits…

机器学习 · 计算机科学 2020-10-23 Adrián Javaloy , Isabel Valera

Time series classification (TSC) performance depends not only on architectural design but also on the diversity of input representations. In this work, we propose a scalable multi-scale convolutional framework that systematically integrates…

机器学习 · 计算机科学 2026-03-26 Celal Alagöz , Mehmet Kurnaz , Farhan Aadil

This paper discusses regularized estimators in the multivariate statistical model as tools naturally arising within a Bayesian framework. First, a link is established between Bayesian estimation and inference under parameter rounding…

统计方法学 · 统计学 2025-09-15 Jan Kalina

Temporal difference (TD) methods constitute a class of methods for learning predictions in multi-step prediction problems, parameterized by a recency factor lambda. Currently the most important application of these methods is to temporal…

人工智能 · 计算机科学 2008-02-03 P. Cichosz

Learning compressed representations of multivariate time series (MTS) facilitates data analysis in the presence of noise and redundant information, and for a large number of variates and time steps. However, classical dimensionality…

神经与进化计算 · 计算机科学 2019-07-17 Filippo Maria Bianchi , Lorenzo Livi , Karl Øyvind Mikalsen , Michael Kampffmeyer , Robert Jenssen

Classification of sequence data is the topic of interest for dynamic Bayesian models and Recurrent Neural Networks (RNNs). While the former can explicitly model the temporal dependencies between class variables, the latter have a capability…

机器学习 · 计算机科学 2018-03-12 Son N. Tran , Srikanth Cherla , Artur Garcez , Tillman Weyde

Modern datasets are becoming heterogeneous. To this end, we present in this paper Mixed-Variate Restricted Boltzmann Machines for simultaneously modelling variables of multiple types and modalities, including binary and continuous…

机器学习 · 统计学 2014-08-07 Truyen Tran , Dinh Phung , Svetha Venkatesh

Unsupervised Domain Adaptation (UDA) leverages labeled source data to train models for unlabeled target data. Given the prevalence of multivariate time series (MTS) data across various domains, the UDA task for MTS classification has…

机器学习 · 计算机科学 2025-04-08 Xiao Lin , Zhichen Zeng , Tianxin Wei , Zhining Liu , Yuzhong chen , Hanghang Tong