一种异常检测方法、装置及存储介质

By using Euclidean distance binary classification in an object ensemble classifier and bootstrap sampling in a support vector machine, the problem of anomaly detection in imbalanced datasets is solved, achieving data balance and information preservation, and improving the accuracy of anomaly detection for server monitoring metrics.

CN115270939BActive Publication Date: 2026-07-17CHINA TELECOM CLOUD TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA TELECOM CLOUD TECH CO LTD
Filing Date
2022-07-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When dealing with imbalanced datasets, existing technologies may use random undersampling techniques to remove samples with valuable information, resulting in poor training performance of subsequent algorithms. This is especially true in the detection of anomalies in server monitoring metrics, where normal samples far outnumber abnormal samples, leading to unsatisfactory data balancing.

Method used

A target ensemble classifier is adopted. The majority class samples are classified by Euclidean distance to determine the support vectors and perform bootstrap sampling. The base classifier is trained by combining the minority class sample subset to form a weighted ensemble classifier, which ensures the preservation of useful information and data balance.

Benefits of technology

It achieves good anomaly detection results on imbalanced datasets by removing a subset of majority class samples while retaining useful classification information, thus improving the accuracy and reliability of detection.

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Abstract

本公开涉及大数据处理技术领域,公开了一种异常检测方法、装置及存储介质,该方法为:将待检测数据集中的各个待检测数据输入到目标集成分类器中,运用对应的目标基分类器分别对每个待检测数据进行检测,得到检测结果,基于各个检测结果,确定待检测数据集对应的设备的异常情况,目标集成分类器的训练过程为:基于欧氏距离进行二分类,得到目标多数类样本子集,运用支持向量机从目标多数类样本子集中确定出目标支持向量,对目标支持向量进行bootstrap采样,结合少数类样本子集确定目标训练样本集,运用目标训练样本集对各个基分类器进行训练,得到目标集成分类器,从而删减了多数类样本子集中的多数类,达到了良好的异常检测效果。
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