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The one-class classification problem is a well-known research endeavor in pattern recognition. The problem is also known under different names, such as outlier and novelty/anomaly detection. The core of the problem consists in modeling and…

计算机视觉与模式识别 · 计算机科学 2015-03-31 Lorenzo Livi , Alireza Sadeghian , Witold Pedrycz

In this paper, we introduce novel Twin Parametric Margin Support Vector Machine (TPMSVM) models designed to address multiclass classification tasks under feature uncertainty. To handle data perturbations, we construct bounded-by-norm…

机器学习 · 计算机科学 2026-04-29 Renato De Leone , Francesca Maggioni , Andrea Spinelli

Direct multi-task twin support vector machine (DMTSVM) explores the shared information between multiple correlated tasks, then it produces better generalization performance. However, it contains matrix inversion operation when solving the…

机器学习 · 计算机科学 2022-04-08 Zongmin Liu , Yitian Xu

Despite the empirical successes of self-supervised learning (SSL) methods, it is unclear what characteristics of their representations lead to high downstream accuracies. In this work, we characterize properties that SSL representations…

机器学习 · 计算机科学 2022-12-13 Yann Dubois , Tatsunori Hashimoto , Stefano Ermon , Percy Liang

In this paper, we propose another version of help-training approach by employing a Probabilistic Neural Network (PNN) that improves the performance of the main discriminative classifier in the semi-supervised strategy. We introduce the…

机器学习 · 计算机科学 2015-09-07 Hamidreza Farhidzadeh

Parameter servers (PSs) facilitate the implementation of distributed training for large machine learning tasks. In this paper, we argue that existing PSs are inefficient for tasks that exhibit non-uniform parameter access; their performance…

数据库 · 计算机科学 2022-03-29 Alexander Renz-Wieland , Rainer Gemulla , Zoi Kaoudi , Volker Markl

This paper aims at improving the classification accuracy of a Support Vector Machine (SVM) classifier with Sequential Minimal Optimization (SMO) training algorithm in order to properly classify failure and normal instances from oil and gas…

机器学习 · 计算机科学 2021-01-01 Zhiyuan Chen , Isa Dino , Nik Ahmad Akram

Deep supervised learning has achieved great success in the last decade. However, its deficiencies of dependence on manual labels and vulnerability to attacks have driven people to explore a better solution. As an alternative,…

机器学习 · 计算机科学 2021-06-28 Xiao Liu , Fanjin Zhang , Zhenyu Hou , Zhaoyu Wang , Li Mian , Jing Zhang , Jie Tang

This paper proposes a novel method for solving one-class classification problems. The proposed approach, namely Subspace Support Vector Data Description, maps the data to a subspace that is optimized for one-class classification. In that…

计算机视觉与模式识别 · 计算机科学 2023-08-29 Fahad Sohrab , Jenni Raitoharju , Moncef Gabbouj , Alexandros Iosifidis

Self-supervised Learning (SSL) including the mainstream contrastive learning has achieved great success in learning visual representations without data annotations. However, most of methods mainly focus on the instance level information…

计算机视觉与模式识别 · 计算机科学 2021-07-26 Mingkai Zheng , Shan You , Fei Wang , Chen Qian , Changshui Zhang , Xiaogang Wang , Chang Xu

Multi-task learning solves multiple correlated tasks. However, conflicts may exist between them. In such circumstances, a single solution can rarely optimize all the tasks, leading to performance trade-offs. To arrive at a set of optimized…

人工智能 · 计算机科学 2024-03-26 Lu Bai , Abhishek Gupta , Yew-Soon Ong

Word2Vec is a prominent model for natural language processing (NLP) tasks. Similar inspiration is found in distributed embeddings for new state-of-the-art (SotA) deep neural networks. However, wrong combination of hyper-parameters can…

计算与语言 · 计算机科学 2021-04-20 Tosin P. Adewumi , Foteini Liwicki , Marcus Liwicki

An unsupervised learning classification model is described. It achieves classification error probability competitive with that of popular supervised learning classifiers such as SVM or kNN. The model is based on the incremental execution of…

机器学习 · 计算机科学 2024-10-01 Daniel N. Nissani

Unsupervised learning of visual similarities is of paramount importance to computer vision, particularly due to lacking training data for fine-grained similarities. Deep learning of similarities is often based on relationships between pairs…

计算机视觉与模式识别 · 计算机科学 2017-04-12 Miguel A Bautista , Artsiom Sanakoyeu , Björn Ommer

We study consistency of learning algorithms for a multi-class performance metric that is a non-decomposable function of the confusion matrix of a classifier and cannot be expressed as a sum of losses on individual data points; examples of…

机器学习 · 计算机科学 2015-01-05 Harish G. Ramaswamy , Harikrishna Narasimhan , Shivani Agarwal

Data selection is one of the fundamental problems in neural network training, particularly for multi-layer perceptrons (MLPs) where identifying the most valuable training samples from massive, multi-source, and heterogeneous data sources…

机器学习 · 计算机科学 2025-10-27 Xiyang Zhang , Chen Liang , Haoxuan Qiu , Hongzhi Wang

Ensemble learning serves as a straightforward way to improve the performance of almost any machine learning algorithm. Existing deep ensemble methods usually naively train many different models and then aggregate their predictions. This is…

计算机视觉与模式识别 · 计算机科学 2022-12-15 Le Zhang , Qibin Hou , Yun Liu , Jia-Wang Bian , Xun Xu , Joey Tianyi Zhou , Ce Zhu

Neural Processes (NPs) are a popular class of approaches for meta-learning. Similar to Gaussian Processes (GPs), NPs define distributions over functions and can estimate uncertainty in their predictions. However, unlike GPs, NPs and their…

机器学习 · 计算机科学 2023-02-09 Tung Nguyen , Aditya Grover

We introduce a principal support vector machine (PSVM) approach that can be used for both linear and nonlinear sufficient dimension reduction. The basic idea is to divide the response variables into slices and use a modified form of support…

统计理论 · 数学 2012-03-14 Bing Li , Andreas Artemiou , Lexin Li

Classification is a fundamental task in supervised learning, while achieving valid misclassification rate control remains challenging due to possibly the limited predictive capability of the classifiers or the intrinsic complexity of the…

统计方法学 · 统计学 2025-09-16 Yinrui Sun , Yin Xia