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In this work we addressed the issue of applying a stochastic classifier and a local, fuzzy confusion matrix under the framework of multi-label classification. We proposed a novel solution to the problem of correcting label pairwise…

机器学习 · 计算机科学 2018-02-08 Pawel Trajdos , Marek Kurzynski

Class imbalance in training datasets can lead to bias and poor generalization in machine learning models. While pre-processing of training datasets can efficiently address both these issues in centralized learning environments, it is…

密码学与安全 · 计算机科学 2024-10-29 Arpit Guleria , J. Harshan , Ranjitha Prasad , B. N. Bharath

A general approach for anomaly detection or novelty detection consists in estimating high density regions or Minimum Volume (MV) sets. The One-Class Support Vector Machine (OCSVM) is a state-of-the-art algorithm for estimating such regions…

机器学习 · 统计学 2015-09-01 Albert Thomas , Vincent Feuillard , Alexandre Gramfort

Classifiers and rating scores are prone to implicitly codifying biases, which may be present in the training data, against protected classes (i.e., age, gender, or race). So it is important to understand how to design classifiers and scores…

机器学习 · 计算机科学 2017-10-17 Matt Olfat , Anil Aswani

Inconsistency in prediction problems occurs when instances that relate in a certain way on condition attributes, do not follow the same relation on the decision attribute. For example, in ordinal classification with monotonicity…

人工智能 · 计算机科学 2021-11-29 Marko Palangetić , Chris Cornelis , Salvatore Greco , Roman Słowiński

A novel linear classification method that possesses the merits of both the Support Vector Machine (SVM) and the Distance-weighted Discrimination (DWD) is proposed in this article. The proposed Distance-weighted Support Vector Machine method…

机器学习 · 统计学 2015-10-09 Xingye Qiao , Lingsong Zhang

Widely available healthcare services are now getting popular because of advancements in wearable sensing techniques and mobile edge computing. People's health information is collected by edge devices such as smartphones and wearable bands…

机器学习 · 计算机科学 2023-10-31 Wenhao Yan , He Li , Kaoru Ota , Mianxiong Dong

Vertical federated learning (VFL), a variant of Federated Learning (FL), has recently drawn increasing attention as the VFL matches the enterprises' demands of leveraging more valuable features to achieve better model performance. However,…

机器学习 · 计算机科学 2023-06-09 Yuanqin He , Yan Kang , Xinyuan Zhao , Jiahuan Luo , Lixin Fan , Yuxing Han , Qiang Yang

Federated active learning (FAL) seeks to reduce annotation cost under privacy constraints, yet its effectiveness degrades in realistic settings with severe global class imbalance and highly heterogeneous clients. We conduct a systematic…

机器学习 · 计算机科学 2026-03-12 Chen-Chen Zong , Sheng-Jun Huang

Federated learning (FL) has become a hot research area in enabling the collaborative training of machine learning models among multiple clients that hold sensitive local data. Nevertheless, unconstrained federated optimization has been…

机器学习 · 计算机科学 2022-08-31 Ying Cui , Yangchen Li , Chencheng Ye

Many existing federated learning (FL) algorithms are designed for supervised learning tasks, assuming that the local data owned by the clients are well labeled. However, in many practical situations, it could be difficult and expensive to…

机器学习 · 计算机科学 2021-11-02 Zhiguo Wang , Xintong Wang , Ruoyu Sun , Tsung-Hui Chang

Numerous studies attempt to mitigate classification bias caused by class imbalance. However, existing studies have yet to explore the collaborative optimization of imbalanced learning and model training. This constraint hinders further…

机器学习 · 计算机科学 2025-12-30 Chuantao Li , Zhi Li , Jiahao Xu , Jie Li , Sheng Li

Visual language models (VLMs) have shown remarkable capabilities in multimodal tasks but face challenges in maintaining fairness across demographic groups, particularly when deployed in federated learning (FL) environments. This paper…

计算机视觉与模式识别 · 计算机科学 2025-05-06 Chaomeng Chen , Zitong Yu , Junhao Dong , Sen Su , Linlin Shen , Shutao Xia , Xiaochun Cao

Federated Semi-Supervised Learning (FSSL) aims to leverage unlabeled data across clients with limited labeled data to train a global model with strong generalization ability. Most FSSL methods rely on consistency regularization with…

机器学习 · 计算机科学 2025-03-18 Yijie Liu , Xinyi Shang , Yiqun Zhang , Yang Lu , Chen Gong , Jing-Hao Xue , Hanzi Wang

A high-dimensional and incomplete (HDI) matrix can describe the complex interactions among numerous nodes in various big data-related applications. A stochastic gradient descent (SGD)-based latent factor analysis (LFA) model is remarkably…

系统与控制 · 电气工程与系统科学 2023-03-08 Li Jinli , Yuan Ye

Fine-tuning pre-trained large language models (LLMs) in a distributed manner poses significant challenges on resource-constrained edge networks. To address this challenge, we propose SflLLM, a novel framework that integrates split federated…

机器学习 · 计算机科学 2025-07-03 Kai Zhao , Zhaohui Yang , Ye Hu , Mingzhe Chen , Chen Zhu , Zhaoyang Zhang

Few-shot learning (FSL) aims to address the data-scarce problem. A standard FSL framework is composed of two components: (1) Pre-train. Employ the base data to generate a CNN-based feature extraction model (FEM). (2) Meta-test. Apply the…

计算机视觉与模式识别 · 计算机科学 2021-11-09 Shuai Shao , Lei Xing , Yan Wang , Rui Xu , Chunyan Zhao , Yan-Jiang Wang , Bao-Di Liu

Supervised fine-tuning (SFT) is crucial for adapting Large Language Models (LLMs) to specific tasks. In this work, we demonstrate that the order of training data can lead to significant training imbalances, potentially resulting in…

计算与语言 · 计算机科学 2024-10-08 Yiming Ju , Ziyi Ni , Xingrun Xing , Zhixiong Zeng , hanyu Zhao , Siqi Fan , Zheng Zhang

Large language models (LLMs) often struggle with balanced class accuracy in text classification tasks using in-context learning (ICL), hindering some practical uses due to user dissatisfaction or safety risks caused by misclassifications.…

计算与语言 · 计算机科学 2025-02-12 Ruixi Lin , Yang You

Recently, Adaboost has been widely used to improve the accuracy of any given learning algorithm. In this paper we focus on designing an algorithm to employ combination of Adaboost with Support Vector Machine as weak component classifiers to…

计算机视觉与模式识别 · 计算机科学 2008-12-16 Seyyed Majid Valiollahzadeh , Abolghasem Sayadiyan , Mohammad Nazari