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Anomaly Detection in Blockchain Transactions Using Supervised Machine Learning

delete2026-01-01
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PRE
AI
H
Heba Mohammed Fadhil *
M
Mohammed I. Younis
S
Sajad Esfandyari
DOI:10.1007/978-3-032-07244-3_2delete
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摘要

摘要

En 中文
区块链的概念通过引入去中心化和安全的架构改变了数字交易格局。然而,它易受51%攻击,恶意用户利用网络大部分计算处理能力操纵交易,通过欺诈或重复方式。本文提出了一种基于监督学习的异常检测算法,旨在检测此类攻击。在一个人工添加异常标记的比特币交易数据集上,我们比较了两种标准分类器:支持向量机(SVM)和随机森林(RF)。在区分正常与异常行为时,应用了重要区块链属性如确认数、区块高度、交易量和难度。性能通过准确率、精确率、召回率和F1分数衡量。RF在所有指标上均得满分(准确率、精确率、召回率和F1分数均为100%),表明其能有效持续识别恶意活动。相反,SVM的准确率和精确率较高(分别为98.96%和97.56%),但召回率和F1分数较低(分别为90.91%和94.12%),说明其无法始终识别所有异常。研究结果表明,集成模型如RF在实时异常检测和改进区块链安全系统方面具有实用性。
Keyword:
machine learning
blockchain
Anomalies
Support Vector Machine
Random Forest

期刊

C
CYBERSECURITY AND ARTIFICIAL INTELLIGENCE STRATEGIES, CAIS 2025
IF:
0
论文数:
23
被引数:
0

机构

U
university of baghdad
学者数:
2.9K
论文数: 2.3K
被引数: 2
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