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Classification and clustering algorithms have been proved to be successful individually in different contexts. Both of them have their own advantages and limitations. For instance, although classification algorithms are more powerful than…

机器学习 · 计算机科学 2017-08-30 Tanmoy Chakraborty

Continual Generalized Category Discovery (C-GCD) requires identifying novel classes from unlabeled data while retaining knowledge of known classes over time. Existing methods typically update classifier weights dynamically, resulting in…

计算机视觉与模式识别 · 计算机科学 2026-02-24 Jizhou Han , Chenhao Ding , SongLin Dong , Yuhang He , Shaokun Wang , Qiang Wang , Yihong Gong

Consider a composite unicast relay network where the channel statistic is randomly drawn from a set of conditional distributions indexed by a random variable, which is assumed to be unknown at the source, fully known at the destination and…

信息论 · 计算机科学 2012-05-23 Arash Behboodi , Pablo Piantanida

Obtaining labelled data in a particular context could be expensive and time consuming. Although different algorithms, including unsupervised learning, semi-supervised learning, self-learning have been adopted, the performance of text…

计算与语言 · 计算机科学 2022-12-26 Ying Xie , Dongping Song

We propose a new training algorithm, ScanMix, that explores semantic clustering and semi-supervised learning (SSL) to allow superior robustness to severe label noise and competitive robustness to non-severe label noise problems, in…

计算机视觉与模式识别 · 计算机科学 2022-10-18 Ragav Sachdeva , Filipe R Cordeiro , Vasileios Belagiannis , Ian Reid , Gustavo Carneiro

One-class classification (OCC) algorithms aim to build classification models when the negative class is either absent, poorly sampled or not well defined. This unique situation constrains the learning of efficient classifiers by defining…

机器学习 · 计算机科学 2018-02-05 Shehroz S. Khan , Michael G. Madden

In this paper, we focus on the fairness issues regarding unsupervised outlier detection. Traditional algorithms, without a specific design for algorithmic fairness, could implicitly encode and propagate statistical bias in data and raise…

机器学习 · 计算机科学 2021-06-10 Hanyu Song , Peizhao Li , Hongfu Liu

In this paper, we propose a novel, effective and simpler end-to-end image clustering auto-encoder algorithm: ICAE. The algorithm uses PEDCC (Predefined Evenly-Distributed Class Centroids) as the clustering centers, which ensures the…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Qiuyu Zhu , Zhengyong Wang

There has been much interest recently in developing fair clustering algorithms that seek to do justice to the representation of groups defined along sensitive attributes such as race and gender. We observe that clustering algorithms could…

机器学习 · 计算机科学 2023-01-02 Stanley Simoes , Deepak P , Muiris MacCarthaigh

Out-of-distribution (OOD) problems in few-shot classification (FSC) occur when novel classes sampled from testing distributions differ from base classes drawn from training distributions, which considerably degrades the performance of deep…

计算机视觉与模式识别 · 计算机科学 2024-05-01 Min Zhang , Haoxuan Li , Fei Wu , Kun Kuang

In many applications of neural network, it is common to introduce huge amounts of input categorical features, as well as output labels. However, since the required network size should have rapid growth with respect to the dimensions of…

信息论 · 计算机科学 2018-05-22 Qizhi Zhang , Kuang-chih Lee , Hongying Bao , Yuan You , Dongbai Guo

Clustering based on belief functions has been gaining increasing attention in the machine learning community due to its ability to effectively represent uncertainty and/or imprecision. However, none of the existing algorithms can be applied…

机器学习 · 计算机科学 2025-07-21 Armel Soubeiga , Thomas Guyet , Violaine Antoine

The Universal Coding of Integers~(UCI) is suitable for discrete memoryless sources with unknown probability distributions and infinitely countable alphabet sizes. A UCI is a class of prefix codes for which the ratio of the average codeword…

信息论 · 计算机科学 2026-05-15 Wei Yan , Yunghsiang S. Han

As a representative evidential clustering algorithm, evidential c-means (ECM) provides a deeper insight into the data by allowing an object to belong not only to a single class, but also to any subset of a collection of classes, which…

机器学习 · 计算机科学 2022-12-07 Lianmeng Jiao , Feng Wang , Zhun-ga Liu , Quan Pan

Due to the existence of label noise in web images and the high memorization capacity of deep neural networks, training deep fine-grained (FG) models directly through web images tends to have an inferior recognition ability. In the…

计算机视觉与模式识别 · 计算机科学 2020-08-07 Zeren Sun , Xian-Sheng Hua , Yazhou Yao , Xiu-Shen Wei , Guosheng Hu , Jian Zhang

The use of Reinforcement Learning in real-world scenarios is strongly limited by issues of scale. Most RL learning algorithms are unable to deal with problems composed of hundreds or sometimes even dozens of possible actions, and therefore…

机器学习 · 计算机科学 2012-03-02 Gabriel Dulac-Arnold , Ludovic Denoyer , Philippe Preux , Patrick Gallinari

Semi-supervised object detection (SSOD) based on pseudo-labeling significantly reduces dependence on large labeled datasets by effectively leveraging both labeled and unlabeled data. However, real-world applications of SSOD often face…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Moussa Kassem Sbeyti , Nadja Klein , Azarm Nowzad , Fikret Sivrikaya , Sahin Albayrak

The cross entropy loss is widely used due to its effectiveness and solid theoretical grounding. However, as training progresses, the loss tends to focus on hard to classify samples, which may prevent the network from obtaining gains in…

机器学习 · 计算机科学 2021-09-14 Barak Battash , Lior Wolf , Tamir Hazan

Previous research has indicated that deep neural network based models for time series classification (TSC) tasks are prone to overfitting. This issue can be mitigated by employing strategies that prevent the model from becoming overly…

机器学习 · 计算机科学 2024-09-02 Hengyi Ma , Weitong Chen

A classification algorithm, called the Linear Centralization Classifier (LCC), is introduced. The algorithm seeks to find a transformation that best maps instances from the feature space to a space where they concentrate towards the center…

机器学习 · 计算机科学 2017-12-25 Mohammad Reza Bonyadi , Viktor Vegh , David C. Reutens