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Connected acyclic graphs (trees) are data objects that hierarchically organize categories. Collections of trees arise in a diverse variety of fields, including evolutionary biology, public health, machine learning, social sciences and…

Methodology · Statistics 2025-12-01 Maria Alejandra Valdez Cabrera , Amy D Willis , Armeen Taeb

One-class classification (OCC) needs samples from only a single class to train the classifier. Recently, an auto-associative kernel extreme learning machine was developed for the OCC task. This paper introduces a novel extension of this…

Machine Learning · Computer Science 2020-11-25 Pratik K. Mishra , Chandan Gautam , Aruna Tiwari

Class imbalance has emerged as one of the major challenges for medical image segmentation. The model cascade (MC) strategy significantly alleviates the class imbalance issue via running a set of individual deep models for coarse-to-fine…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Chenhong Zhou , Changxing Ding , Xinchao Wang , Zhentai Lu , Dacheng Tao

This paper introduces to a structured application of the One-Class approach and the One-Class-One-Network model for supervised classification tasks, specifically addressing a vowel phonemes classification case study within the Automatic…

Audio and Speech Processing · Electrical Eng. & Systems 2025-07-01 Stefano Giacomelli , Marco Giordano , Claudia Rinaldi

One-class support vector machine (OC-SVM) for a long time has been one of the most effective anomaly detection methods and extensively adopted in both research as well as industrial applications. The biggest issue for OC-SVM is yet the…

Machine Learning · Computer Science 2018-10-16 Minh-Nghia Nguyen , Ngo Anh Vien

Classifying patterns of known classes and rejecting ambiguous and novel (also called as out-of-distribution (OOD)) inputs are involved in open world pattern recognition. Deep neural network models usually excel in closed-set classification…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Zhen Cheng , Xu-Yao Zhang , Cheng-Lin Liu

In order to speed-up classification models when facing a large number of categories, one usual approach consists in organizing the categories in a particular structure, this structure being then used as a way to speed-up the prediction…

Machine Learning · Computer Science 2015-11-26 Aurélia Léon , Ludovic Denoyer

We present Fast Random projection-based One-Class Classification (FROCC), an extremely efficient method for one-class classification. Our method is based on a simple idea of transforming the training data by projecting it onto a set of…

Machine Learning · Computer Science 2021-07-01 Arindam Bhattacharya , Sumanth Varambally , Amitabha Bagchi , Srikanta Bedathur

Restricted kernel machines (RKMs) have demonstrated a significant impact in enhancing generalization ability in the field of machine learning. Recent studies have introduced various methods within the RKM framework, combining kernel…

Machine Learning · Computer Science 2025-02-18 A. Quadir , M. Sajid , M. Tanveer

We propose ODTE, a new ensemble that uses oblique decision trees as base classifiers. Additionally, we introduce STree, the base algorithm for growing oblique decision trees, which leverages support vector machines to define hyperplanes…

Machine Learning · Computer Science 2025-03-18 Ricardo Montañana , José A. Gámez , José M. Puerta

This work introduces the one-class slab SVM (OCSSVM), a one-class classifier that aims at improving the performance of the one-class SVM. The proposed strategy reduces the false positive rate and increases the accuracy of detecting…

Computer Vision and Pattern Recognition · Computer Science 2016-08-04 Victor Fragoso , Walter Scheirer , Joao Hespanha , Matthew Turk

One-class classification is a fundamental problem in pattern recognition with a wide range of applications. This work presents a semi-supervised quantum machine learning algorithm for such a problem, which we call a variational quantum…

Quantum Physics · Physics 2024-08-12 Gunhee Park , Joonsuk Huh , Daniel K. Park

This paper introduces Weighted Optimal Classification Forests (WOCFs), a new family of classifiers that takes advantage of an optimal ensemble of decision trees to derive accurate and interpretable classifiers. We propose a novel…

Optimization and Control · Mathematics 2024-12-02 Víctor Blanco , Alberto Japón , Justo Puerto , Peter Zhang

The paper proposes a family of communication efficient methods for distributed learning in heterogeneous environments in which users obtain data from one of $K$ different distributions. In the proposed setup, the grouping of users (based on…

Machine Learning · Computer Science 2023-10-24 Aleksandar Armacki , Dragana Bajovic , Dusan Jakovetic , Soummya Kar

We propose new methods for Support Vector Machines (SVMs) using tree architecture for multi-class classi- fication. In each node of the tree, we select an appropriate binary classifier using entropy and generalization error estimation, then…

Machine Learning · Computer Science 2017-08-29 Pittipol Kantavat , Boonserm Kijsirikul , Patoomsiri Songsiri , Ken-ichi Fukui , Masayuki Numao

A method based on one class support vector machine (OCSVM) is proposed for class incremental learning. Several OCSVM models divide the input space into several parts. Then, the 1VS1 classifiers are constructed for the confuse part by using…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Chengfei Yao , Jie Zou , Yanan Luo , Tao Li , Gang Bai

Multi-kernel learning has been well explored in the recent past and has exhibited promising outcomes for multi-class classification and regression tasks. In this paper, we present a multiple kernel learning approach for the One-class…

Machine Learning · Computer Science 2018-07-18 Chandan Gautam , Ramesh Balaji , K Sudharsan , Aruna Tiwari , Kapil Ahuja

A typical issue in Pattern Recognition is the non-uniformly sampled data, which modifies the general performance and capability of machine learning algorithms to make accurate predictions. Generally, the data is considered non-uniformly…

Machine Learning · Computer Science 2020-04-07 Riccardo La Grassa , Ignazio Gallo , Nicola Landro

Although few-shot learning and one-class classification (OCC), i.e., learning a binary classifier with data from only one class, have been separately well studied, their intersection remains rather unexplored. Our work addresses the…

Machine Learning · Computer Science 2021-02-12 Ahmed Frikha , Denis Krompaß , Hans-Georg Köpken , Volker Tresp

This paper offers a comprehensive review of one-class classification (OCC), examining the technologies and methodologies employed in its implementation. It delves into various approaches utilized for OCC across diverse data types, such as…

Machine Learning · Computer Science 2026-03-03 Toshitaka Hayashi , Dalibor Cimr , Hamido Fujita , Richard Cimler