Article(id=1322941066751651957, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322940959071285581, articleNumber=null, orderNo=null, doi=10.14075/j.jgg.2024.08.369, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1722528000000, receivedDateStr=2024-08-02, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343329370, onlineDateStr=2026-10-30, pubDate=1749916800000, pubDateStr=2025-06-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343329370, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343329370, creator=13701087609, updateTime=1793343329370, updator=13701087609, issue=Issue{id=1322940959071285581, tenantId=1146029695717560320, journalId=1281212831689347082, year='2025', volume='45', issue='6', pageStart='551', pageEnd='660', issueExtLink='null', onlineDate='null', pubDate='1749916800000', pubDateStr='2025-06-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343303697, creator='13701087609', updateTime=1793343303697, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=654, endPage=660, ext={EN=ArticleExt(id=1322941066973950070, articleId=1322941066751651957, tenantId=1146029695717560320, journalId=1281212831689347082, language=EN, title=Machine Learning for Automated Detection and Classification of Microseismic Signals from Avalanche Rockfalls, columnId=null, journalTitle=Journal of Geodesy and Geodynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In this paper, based on microseismic monitoring data and 49 microseismic feature parameters of a marble mine in Perugia, central Italy, we compare and analyze the accuracy of three machine learning models, namely, neural networks, decision trees and random forests, in the automated classification of microseismic signals, and optimize the model parameters to improve the performance of the model through the grid searcher algorithm, with an emphasis on discussing the effects of the feature parameter selection and the size of the classification set on the classification results. The results show that the random forest classifier obtains the highest accuracy in microseismic signal classification, with 98.11% classification accuracy after optimization, meanwhile, by reducing some of the feature parameters with small weights, the efficiency of the classification computation is greatly improved and the accuracy decreases less, and the optimal allocation ratio of the training set to the test set is 8 ∶2.
, authors=Bin XIE
1, Guishan GAO
2, Zhiyong HUANG
3, 4, Liang FENG
5, *, authorsList=Bin XIE, Guishan GAO, Zhiyong HUANG, Liang FENG, authorCompany=null, correspAuthors=Liang FENG, authorNote=
XIE Bin, engineer, majors in earthquake monitoring and forecasting early warning, E-mail: 309479810@qq.com
, correspAuthorsNote=null, copyrightStatement=
All rights reserved. Unauthorized reproduction is prohibited., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322941069909962881, articleId=1322941066751651957, tenantId=1146029695717560320, journalId=1281212831689347082, language=CN, title=机器学习实现崩塌落石微震信号自动化检测和分类, columnId=1322506256904994864, journalTitle=大地测量与地球动力学, columnName=观测技术, runingTitle=null, highlight=null, articleAbstract=
基于意大利中部佩鲁贾市某大理石矿山微震监测数据和49个微震特征参数,对比分析神经网络、决策树和随机森林3种机器学习模型在微震信号自动化分类中的精度,通过网格搜索算法优化模型参数提高模型性能,讨论特征参数的选择和分类集的大小对分类结果的影响。结果表明,随机森林分类器在微震信号分类中获得的准确度最高,优化后分类准确度为98.11%,同时减少部分权重小的特征参数,分类计算效率大幅提高,准确度下降较少,训练集与测试集的最佳分配比例为8 ∶2。
, authors=谢斌
1, 高桂山
2, 黄志勇
3, 4, 冯亮
5, *, authorsList=谢斌, 高桂山, 黄志勇, 冯亮, authorCompany=null, correspAuthors=冯亮, authorNote=
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版权所有,未经授权,不得转载。, copyrightOwner=大地测量与地球动力学编辑部, extLink=null, articleAbsUrl=null, sourceXml=PgC0obgdPK07gQ4HEQHmgw==, magXml=FQJG9DEauMfL1Zwv9/gl1g==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=W7XmpGWm1NGWN2HljfXEkw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=wyj4iI6eT+yJjQ+7cf1uTQ==, mapNumber=null, fund=null)}, authors=[Author(id=1322941070522331282, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=309479810@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322941070610411668, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, authorId=1322941070522331282, language=EN, stringName=Bin XIE, firstName=Bin, middleName=null, lastName=XIE, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=1 Ganzhou Earthquake Monitoring Center Station, 55 Helanshan Road, Ganzhou 341000, China, bio={"content":"
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1, address=1 赣州地震监测中心站, 江西省赣州市贺兰山路55号, 341000, bio={"content":"
谢斌,工程师,主要从事地震监测预报预警相关研究,E-mail:309479810@qq.com
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2, address=2 Guangdong Dabaoshan Mining Co Ltd, Shaxi Town, Shaoguan 512128, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322941071063396507, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, authorId=1322941070916595863, language=CN, stringName=高桂山, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=2 广东省大宝山矿业有限公司, 广东省韶关市沙溪镇, 512128, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322941070186786949, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, xref=null, ext=[AuthorCompanyExt(id=1322941070195175558, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, companyId=1322941070186786949, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 Guangdong Dabaoshan Mining Co Ltd, Shaxi Town, Shaoguan 512128, China), AuthorCompanyExt(id=1322941070203564167, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, companyId=1322941070186786949, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 广东省大宝山矿业有限公司, 广东省韶关市沙溪镇, 512128)])]), Author(id=1322941071285694621, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322941071361192096, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, authorId=1322941071285694621, language=EN, stringName=Zhiyong HUANG, firstName=Zhiyong, middleName=null, lastName=HUANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, 4, address=3 Institute of Mountain Hazards and Environment, CAS, 189 South-Qunxian Road, Chengdu 610041, China
4 University of Chinese Academy of Sciences, A19 Yuquan Road, Beijing 100049, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322941071419912353, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, authorId=1322941071285694621, language=CN, stringName=黄志勇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, 4, address=3 中国科学院、水利部成都山地灾害与环境研究所, 成都市群贤南街189号, 610041
4 中国科学院大学, 北京市玉泉路19号, 100049, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322941070258090120, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, xref=null, ext=[AuthorCompanyExt(id=1322941070266478729, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, companyId=1322941070258090120, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3 Institute of Mountain Hazards and Environment, CAS, 189 South-Qunxian Road, Chengdu 610041, China), AuthorCompanyExt(id=1322941070274867338, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, companyId=1322941070258090120, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3 中国科学院、水利部成都山地灾害与环境研究所, 成都市群贤南街189号, 610041)]), AuthorCompany(id=1322941070333587595, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, xref=null, ext=[AuthorCompanyExt(id=1322941070341976204, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, companyId=1322941070333587595, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=4 University of Chinese Academy of Sciences, A19 Yuquan Road, Beijing 100049, China), AuthorCompanyExt(id=1322941070350364813, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, companyId=1322941070333587595, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=4 中国科学院大学, 北京市玉泉路19号, 100049)])]), Author(id=1322941071721902243, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=liang.feng@jxust.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1322941073298960550, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, authorId=1322941071721902243, language=EN, stringName=Liang FENG, firstName=Liang, middleName=null, lastName=FENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
5, *, address=5 College of Sources and Environmental Engineering, Jiangxi University of Science and Technology, 156 Kejia Road, Ganzhou 341000, China
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Seismic signal of rockfall in rockfall artificial released test, figureFileSmall=ufaoILrkyYXim7DiQUyTGA==, figureFileBig=W7XmpGWm1NGWN2HljfXEkw==, tableContent=null), ArticleFig(id=1322941074196541617, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=CN, label=图1, caption=
人工投石实验微震标准落石信号, figureFileSmall=ufaoILrkyYXim7DiQUyTGA==, figureFileBig=W7XmpGWm1NGWN2HljfXEkw==, tableContent=null), ArticleFig(id=1322941074418839730, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=EN, label=Fig. 2, caption=
The results of classification, figureFileSmall=eQokqN1JvduPVJQ4odr+ww==, figureFileBig=tecXyiDCvzwELnrbbx24QQ==, tableContent=null), ArticleFig(id=1322941074485948595, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=CN, label=图2, caption=
微震事件分类结果, figureFileSmall=eQokqN1JvduPVJQ4odr+ww==, figureFileBig=tecXyiDCvzwELnrbbx24QQ==, tableContent=null), ArticleFig(id=1322941074561446068, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=EN, label=Fig. 3, caption=
Confusion matrix of random forest model after grid search optimization, figureFileSmall=ZZl8sCCqyZWbbaE6zq8VQQ==, figureFileBig=iutTRlMhOTQEKU9PTDwi3w==, tableContent=null), ArticleFig(id=1322941074641137845, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=CN, label=图3, caption=
网格搜索优化后的随机森林模型的混淆矩阵, figureFileSmall=ZZl8sCCqyZWbbaE6zq8VQQ==, figureFileBig=iutTRlMhOTQEKU9PTDwi3w==, tableContent=null), ArticleFig(id=1322941074725023926, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=EN, label=Fig. 4, caption=
Weight of feature parameters in the classification model(average value of 100 training sessions), figureFileSmall=kV03PID2BRTWqvoE40WInw==, figureFileBig=EEpZgAprS3ZLZSQJKJtuwA==, tableContent=null), ArticleFig(id=1322941074783744183, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=CN, label=图4, caption=
特征参数在分类模型中的权重(100次训练平均值), figureFileSmall=kV03PID2BRTWqvoE40WInw==, figureFileBig=EEpZgAprS3ZLZSQJKJtuwA==, tableContent=null), ArticleFig(id=1322941074850853048, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=EN, label=Fig. 5, caption=
Average classification accuracy under 100 training sessions with different sample sizes, figureFileSmall=fM5HTjqFlPUDFTP1nQymTQ==, figureFileBig=PGoPxxzhANt+FC/8Mi/Frg==, tableContent=null), ArticleFig(id=1322941074922156217, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=CN, label=图5, caption=
训练100次不同样本量情况下平均分类准确率, figureFileSmall=fM5HTjqFlPUDFTP1nQymTQ==, figureFileBig=PGoPxxzhANt+FC/8Mi/Frg==, tableContent=null), ArticleFig(id=1322941075022819514, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=EN, label=Tab. 1, caption=
Selection and calculation of characteristic parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| | 序号 | 描述 | 公式或代码实现 | 来源 |
| 时域 | 1 | 持续时间 | ts-tf,ts和tf分别为开始和结束时间 | 参考文献[6] |
| 2 | 最大振幅 | max(xi) | 参考文献[6] |
| 3 | 相对微震能量 | $\int_0^T x_i^2$,T为持续时间 | 本文 |
| 4 | 相对微震能量与最大振幅的比值 | - | 本文 |
| 5 | 波峰数量 | - | 参考文献[6] |
| 6 | 均峰比 | $\frac{\operatorname{Mean}\left(\operatorname{abs}\left(x_i\right)\right)}{\operatorname{Max}\left(\operatorname{abs}\left(x_i\right)\right)}$ | 参考文献[6] |
| 7 | 包络线中值与最大值信号之比 | $\frac{\operatorname{Median}\left(\operatorname{abs}\left(x_i\right)\right)}{\operatorname{Max}\left({abs}\left(x_i\right)\right)}$ | 参考文献[6] |
| 8 | 升序和降序时间之比 | $\frac{t_{\max }-t_s}{t_{\max }-t_f}$, tmax为最大振幅的时间 | 参考文献[6] |
| 9 | 原始信号峰度 | Kurtosis(xi), Kurtosis为峰度函数 | 参考文献[6] |
| 10 | 原始信号偏度 | Skewness(xi), Skewness为偏度函数 | 参考文献[6] |
| 11 | 包络线峰度 | Kurtosis(xi_rolling), xi_rolling为滑窗均值构造包络线 | 参考文献[6] |
| 12 | 包络线偏度 | Skewness(xi_rolling) | 参考文献[6] |
| 13 | 自相关函数前1/3能量 | $\int_0^{T / 3} C\left(x_i\right)$, C为自相关函数 | 参考文献[6] |
| 14 | 自相关函数剩余能量 | $\int_{T / 3}^T C\left(x_i\right)$ | 参考文献[6] |
| 15 | 13和14的比值 | - | 参考文献[6] |
| 16 | 自相关函数波峰 | findpeaks(C(xi))或自编代码,findpeaks为MATLAB中波峰函数 | 参考文献[6] |
| 17 | 信号的能量以5~10 Hz的频率过滤 | $\int_0^T y_i^2, y_i$为在频率范围内滤波后的信号 | 参考文献[6] |
| 18 | 5~10 Hz过滤信号峰度 | Kurtosis(yi) | 参考文献[6] |
| 19 | 信号的能量以10~50 Hz的频率过滤 | 见参数17 | 参考文献[6] |
| 20 | 10~50 Hz过滤信号峰度 | 见参数18 | 参考文献[6] |
| 21 | 信号的能量以5~70 Hz的频率过滤 | 见参数17 | 参考文献[6] |
| 22 | 5~70 Hz过滤信号峰度 | 见参数18 | 参考文献[6] |
| 23 | 信号的能量以50~100 Hz的频率过滤 | 见参数17 | 参考文献[6] |
| 24 | 50~100 Hz过滤信号峰度 | 见参数18 | 参考文献[6] |
| 25 | 信号的能量以5~100 Hz的频率过滤 | 见参数17 | 参考文献[6] |
| 26 | 5~100 Hz过滤信号峰度 | 见参数18 | 参考文献[6] |
| 27 | 信号递减部分与频谱特征的均方根值 | $\sqrt{\overline{Y(t)-I(t)^2}}, Y$为包络线信号 | 参考文献[6] |
| 28 | 最大频率 | argmax(FFTAi), FFTA为傅里叶变换系数 | 参考文献[5] |
| 29 | DFT平均值 | mean(data_DFT),data_DFT = abs(fft(Zdata)) | 参考文献[5] |
| 30 | DFT最大值 | max(data_DFT) | 参考文献[5] |
| 31 | 标准化DFT的中值 | median(normal_DFT),normal_DFT为DFT标准化 | 参考文献[5] |
| 32 | 标准化DFT的方差 | var(normal_DFT), var为方差 | 参考文献[5] |
| 33 | DFT 0~1/4的能量 | $\int_{f_1}^{f_2} \operatorname{DFT}(f) \mathrm{d} f, f_1、f_2$为频率范围 | 参考文献[5] |
| 34 | DFT 1/4~1/2的能量 | 见参数33 | 参考文献[5] |
| 35 | DFT 1/2~3/4的能量 | 见参数33 | 参考文献[5] |
| 36 | DFT 3/4~1的能量 | 见参数33 | 参考文献[5] |
| 时频域 | 37 | 自相关函数波峰数 | size(findpeaks(DFT_auto), 2),DFT_auto为DFT自相关 | 参考文献[8] |
| 38 | DFT作时间的函数 | $\text { Kurtosis }\left[\max\limits _{t=0, \cdots, T}(\operatorname{SPEC}(t, f))\right], \operatorname{SPEC}(t, f)$为光谱图 | 参考文献[8] |
| 39 | DFT峰值数量 | size(findpeaks(abs(max(cwtmatr))), 2) | 参考文献[8] |
| 40 | DFT均值数量 | 见参数39 | 参考文献[8] |
| 41 | DFT中值数量 | 见参数39 | 参考文献[8] |
| 42 | 39和40的比值 | - | 参考文献[8] |
| 43 | 39和41的比值 | - | 参考文献[8] |
| 44 | DFT的最大值与中值之间的平均比值 | mean(dfts_max/dfts_median) | 参考文献[8] |
| 45 | DFT的中值和第1个四分位数之间的平均距离作为时间的函数 | mean(quartile(2)-quartile(1)),quartile=prctile(dfts_median, [25 50 75]), Prctile为计算百分位数 | 参考文献[8] |
| 46 | DFT的第3个四分位数和第1个四分位数之间的平均距离作为时间的函数 | 见参数45 | 参考文献[8] |
| 47 | DFT的第3个四分位数和中值之间的平均距离作为时间的函数 | 见参数45 | 参考文献[8] |
| 多基站网络 | 48 | 振幅比 | 参数2在不同基站的比值 | 参考文献[14] |
| 49 | 频率比 | 参数28在不同基站的比值 | 参考文献[14] |
), ArticleFig(id=1322941075127677115, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=CN, label=表1, caption=
特征参数选取及计算
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| | 序号 | 描述 | 公式或代码实现 | 来源 |
| 时域 | 1 | 持续时间 | ts-tf,ts和tf分别为开始和结束时间 | 参考文献[6] |
| 2 | 最大振幅 | max(xi) | 参考文献[6] |
| 3 | 相对微震能量 | $\int_0^T x_i^2$,T为持续时间 | 本文 |
| 4 | 相对微震能量与最大振幅的比值 | - | 本文 |
| 5 | 波峰数量 | - | 参考文献[6] |
| 6 | 均峰比 | $\frac{\operatorname{Mean}\left(\operatorname{abs}\left(x_i\right)\right)}{\operatorname{Max}\left(\operatorname{abs}\left(x_i\right)\right)}$ | 参考文献[6] |
| 7 | 包络线中值与最大值信号之比 | $\frac{\operatorname{Median}\left(\operatorname{abs}\left(x_i\right)\right)}{\operatorname{Max}\left({abs}\left(x_i\right)\right)}$ | 参考文献[6] |
| 8 | 升序和降序时间之比 | $\frac{t_{\max }-t_s}{t_{\max }-t_f}$, tmax为最大振幅的时间 | 参考文献[6] |
| 9 | 原始信号峰度 | Kurtosis(xi), Kurtosis为峰度函数 | 参考文献[6] |
| 10 | 原始信号偏度 | Skewness(xi), Skewness为偏度函数 | 参考文献[6] |
| 11 | 包络线峰度 | Kurtosis(xi_rolling), xi_rolling为滑窗均值构造包络线 | 参考文献[6] |
| 12 | 包络线偏度 | Skewness(xi_rolling) | 参考文献[6] |
| 13 | 自相关函数前1/3能量 | $\int_0^{T / 3} C\left(x_i\right)$, C为自相关函数 | 参考文献[6] |
| 14 | 自相关函数剩余能量 | $\int_{T / 3}^T C\left(x_i\right)$ | 参考文献[6] |
| 15 | 13和14的比值 | - | 参考文献[6] |
| 16 | 自相关函数波峰 | findpeaks(C(xi))或自编代码,findpeaks为MATLAB中波峰函数 | 参考文献[6] |
| 17 | 信号的能量以5~10 Hz的频率过滤 | $\int_0^T y_i^2, y_i$为在频率范围内滤波后的信号 | 参考文献[6] |
| 18 | 5~10 Hz过滤信号峰度 | Kurtosis(yi) | 参考文献[6] |
| 19 | 信号的能量以10~50 Hz的频率过滤 | 见参数17 | 参考文献[6] |
| 20 | 10~50 Hz过滤信号峰度 | 见参数18 | 参考文献[6] |
| 21 | 信号的能量以5~70 Hz的频率过滤 | 见参数17 | 参考文献[6] |
| 22 | 5~70 Hz过滤信号峰度 | 见参数18 | 参考文献[6] |
| 23 | 信号的能量以50~100 Hz的频率过滤 | 见参数17 | 参考文献[6] |
| 24 | 50~100 Hz过滤信号峰度 | 见参数18 | 参考文献[6] |
| 25 | 信号的能量以5~100 Hz的频率过滤 | 见参数17 | 参考文献[6] |
| 26 | 5~100 Hz过滤信号峰度 | 见参数18 | 参考文献[6] |
| 27 | 信号递减部分与频谱特征的均方根值 | $\sqrt{\overline{Y(t)-I(t)^2}}, Y$为包络线信号 | 参考文献[6] |
| 28 | 最大频率 | argmax(FFTAi), FFTA为傅里叶变换系数 | 参考文献[5] |
| 29 | DFT平均值 | mean(data_DFT),data_DFT = abs(fft(Zdata)) | 参考文献[5] |
| 30 | DFT最大值 | max(data_DFT) | 参考文献[5] |
| 31 | 标准化DFT的中值 | median(normal_DFT),normal_DFT为DFT标准化 | 参考文献[5] |
| 32 | 标准化DFT的方差 | var(normal_DFT), var为方差 | 参考文献[5] |
| 33 | DFT 0~1/4的能量 | $\int_{f_1}^{f_2} \operatorname{DFT}(f) \mathrm{d} f, f_1、f_2$为频率范围 | 参考文献[5] |
| 34 | DFT 1/4~1/2的能量 | 见参数33 | 参考文献[5] |
| 35 | DFT 1/2~3/4的能量 | 见参数33 | 参考文献[5] |
| 36 | DFT 3/4~1的能量 | 见参数33 | 参考文献[5] |
| 时频域 | 37 | 自相关函数波峰数 | size(findpeaks(DFT_auto), 2),DFT_auto为DFT自相关 | 参考文献[8] |
| 38 | DFT作时间的函数 | $\text { Kurtosis }\left[\max\limits _{t=0, \cdots, T}(\operatorname{SPEC}(t, f))\right], \operatorname{SPEC}(t, f)$为光谱图 | 参考文献[8] |
| 39 | DFT峰值数量 | size(findpeaks(abs(max(cwtmatr))), 2) | 参考文献[8] |
| 40 | DFT均值数量 | 见参数39 | 参考文献[8] |
| 41 | DFT中值数量 | 见参数39 | 参考文献[8] |
| 42 | 39和40的比值 | - | 参考文献[8] |
| 43 | 39和41的比值 | - | 参考文献[8] |
| 44 | DFT的最大值与中值之间的平均比值 | mean(dfts_max/dfts_median) | 参考文献[8] |
| 45 | DFT的中值和第1个四分位数之间的平均距离作为时间的函数 | mean(quartile(2)-quartile(1)),quartile=prctile(dfts_median, [25 50 75]), Prctile为计算百分位数 | 参考文献[8] |
| 46 | DFT的第3个四分位数和第1个四分位数之间的平均距离作为时间的函数 | 见参数45 | 参考文献[8] |
| 47 | DFT的第3个四分位数和中值之间的平均距离作为时间的函数 | 见参数45 | 参考文献[8] |
| 多基站网络 | 48 | 振幅比 | 参数2在不同基站的比值 | 参考文献[14] |
| 49 | 频率比 | 参数28在不同基站的比值 | 参考文献[14] |
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Parameter optimization analysis results of random forest mode
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| 参数 | 介绍 | 调优范围 | 最优选择 |
| n_estimators | RF中决策树的个数 | range(1, 100, 1) | 50 |
| max_depth | 决策树的最大深度 | range(1, 100, 1) | 9 |
| min_samples_leaf | 叶子节点最少样本数 | range(1, 100, 1) | 1 |
| min_samples_split | 内部节点再划分所需最小样本数 | range(1, 100, 1) | 3 |
| max_features | RF划分时考虑的最大特征数 | range(1, 100, 1) | 11 |
| criterion | 度量分裂质量的方法 | [‘gini’, ‘entropy’] | gini |
), ArticleFig(id=1322941075303837885, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322941066751651957, language=CN, label=表2, caption=
随机森林模型参数优化分析结果
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| 参数 | 介绍 | 调优范围 | 最优选择 |
| n_estimators | RF中决策树的个数 | range(1, 100, 1) | 50 |
| max_depth | 决策树的最大深度 | range(1, 100, 1) | 9 |
| min_samples_leaf | 叶子节点最少样本数 | range(1, 100, 1) | 1 |
| min_samples_split | 内部节点再划分所需最小样本数 | range(1, 100, 1) | 3 |
| max_features | RF划分时考虑的最大特征数 | range(1, 100, 1) | 11 |
| criterion | 度量分裂质量的方法 | [‘gini’, ‘entropy’] | gini |
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