Article(id=1211269164224868941, tenantId=1146029695717560320, journalId=1189873630562394117, issueId=1211269157790806494, articleNumber=null, orderNo=null, doi=10.11855/j.issn.0577-7402.2021.04.06, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1599667200000, receivedDateStr=2020-09-10, revisedDate=1610380800000, revisedDateStr=2021-01-12, acceptedDate=null, acceptedDateStr=null, onlineDate=1766718673043, onlineDateStr=2025-12-26, pubDate=1619539200000, pubDateStr=2021-04-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1766718673043, onlineIssueDateStr=2025-12-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1766718673043, creator=13701087609, updateTime=1766718673043, updator=13701087609, issue=Issue{id=1211269157790806494, tenantId=1146029695717560320, journalId=1189873630562394117, year='2021', volume='46', issue='4', pageStart='319', pageEnd='424', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1766718671510, creator=13701087609, updateTime=1766718756000, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1211269512217882745, tenantId=1146029695717560320, journalId=1189873630562394117, issueId=1211269157790806494, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1211269512217882746, tenantId=1146029695717560320, journalId=1189873630562394117, issueId=1211269157790806494, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=354, endPage=360, ext={EN=ArticleExt(id=1211269164572996188, articleId=1211269164224868941, tenantId=1146029695717560320, journalId=1189873630562394117, language=EN, title=Construction of prediction model of cirrhosis-related hepatic encephalopathy based on machine learning algorithm, columnId=1190310109000602400, journalTitle=Medical Journal of Chinese People’s Liberation Army, columnName=Clinical Research, runingTitle=null, highlight=null, articleAbstract=
Objective To construct a prediction model based on machine learning algorithm for cirrhosis-related hepatic encephalopathy. Methods A cross-sectional survey was conducted in 1498 patients from 7 medical institutions in Chongqing from June 2019 to June 2020, who were divided into hepatic encephalopathy group (n=285) and non-hepatic encephalopathy group(n=1213) according to whether hepatic encephalopathy occurred. 70% (1048 in total) of the data collected from 1498 patients was randomly chosen as the training set for establishing the prediction model and the rest 30% (450 in total) was used for internal verification. Univariate logistic regression was used to filter input indicators. Logistic regression, random forest, decision tree and XGBoost algorithm based on machine learning were used to construct a diagnostic predictive model. The models constructed by the four methods were compared for predictive and diagnostic value of cirrhosis-related hepatic encephalopathy. Results Logistic regression, random forest, decision tree and XGBoost models all suggested prothrombin activity (OR=0.933, 95%CI 0.921-0.946), age (OR=1.045, 95%CI 1.029-1.061), blood sodium (OR=0.964, 95%CI 0.928-1.000) and urea nitrogen (OR=1.063, 95%CI 1.022-1.105) are important influencing factors of hepatic encephalopathy. The sensitivities of the four models were 0.843, 0.904, 0.759 and 0.892; the specificities were 0.785, 0.695, 0.717 and 0.706; the area under the curve (AUC) were 0.875, 0.883, 0.767 and 0.847 respectively. Conclusions The risk prediction model of cirrhosis-related hepatic encephalopathy established based on machine learning has high diagnostic value. The diagnostic effects of logistic and random forest models are better than those of decision tree and XGBoost models.
, correspAuthors=Wen-Long Zhao, authorNote=null, correspAuthorsNote=
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目的 构建基于机器学习算法的肝硬化相关肝性脑病预测模型。方法 采用横断面研究方法,收集2019年6月—2020年6月于重庆市7家医疗机构就诊的1498例肝硬化患者的病例资料,依据是否发生肝性脑病分为肝性脑病组(n=285)与非肝性脑病组(n=1213)。随机抽取70%(1048例)患者的病例资料作为训练集构建预测模型,其余30%(450例)作为测试集进行内部验证。采用单因素logistic回归筛选输入指标,应用基于机器学习的logistic回归、随机森林、决策树和XGBoost算法构建预测模型,比较4种方法构建的模型对肝硬化相关肝性脑病的诊断价值。结果 Logistic回归、随机森林、决策树和XGBoost模型均提示,凝血酶原活动度(OR=0.933,95%CI 0.921~0.946)、年龄(OR=1.045,95%CI 1.029~1.061)、全血钠(OR=0.964,95%CI 0.928~1.000)及尿素氮(OR=1.063,95%CI 1.022~1.105)是肝硬化相关肝性脑病的重要影响因素。Logistic回归、随机森林、决策树和XGBoost模型诊断肝硬化相关肝性脑病的灵敏度分别为0.843、0.904、0.759、0.892,特异度分别为0.785、0.695、0.717、0.706,AUC分别为0.875、0.883、0.767、0.847。结论 基于机器学习算法建立的肝硬化相关肝性脑病风险预测模型具有较高的诊断价值,其中logistic回归模型和随机森林模型的诊断效能优于决策树模型和XGBoost模型。
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谈军涛,硕士研究生,主要从事电子病历数据挖掘方面的研究
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OOB trend of random forest model OOB. 袋外数据, figureFileSmall=Q0Uc8qDF4rTKNFgZPXgdIQ==, figureFileBig=w1ZoguYGVtPtoxOky/rOzA==, tableContent=null), ArticleFig(id=1211322035100316091, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=CN, label=图1, caption=
两组肝病患者随机森林模型OOB趋势, figureFileSmall=Q0Uc8qDF4rTKNFgZPXgdIQ==, figureFileBig=w1ZoguYGVtPtoxOky/rOzA==, tableContent=null), ArticleFig(id=1211322035196785086, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=EN, label=Fig.2, caption=
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决策树模型的可视化分析, figureFileSmall=AD7K5jgPwPlqEWr6it/ZkQ==, figureFileBig=gQ1jwCtM5GKmC+oqcqN3+w==, tableContent=null), ArticleFig(id=1211322035331002817, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=EN, label=Fig.3, caption=
Importance analysis of indexes in XGBoost model, figureFileSmall=MV8UgPrzLE4QF3R+qxzaQw==, figureFileBig=as4s4n7CaOL8XoiyYGnl1Q==, tableContent=null), ArticleFig(id=1211322035419083203, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=CN, label=图3, caption=
XGBoost模型指标的重要性分析, figureFileSmall=MV8UgPrzLE4QF3R+qxzaQw==, figureFileBig=as4s4n7CaOL8XoiyYGnl1Q==, tableContent=null), ArticleFig(id=1211322035490386373, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=EN, label=Fig.4, caption=
ROC curves of four models in test set, figureFileSmall=/3s52qdXzsdyNUVsKRgJPA==, figureFileBig=O9dHiu3VojFfqLjOnh+Kgg==, tableContent=null), ArticleFig(id=1211322035544912327, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=CN, label=图4, caption=
各模型在测试集中的ROC曲线分析, figureFileSmall=/3s52qdXzsdyNUVsKRgJPA==, figureFileBig=O9dHiu3VojFfqLjOnh+Kgg==, tableContent=null), ArticleFig(id=1211322035612021192, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=EN, label=Fig.5, caption=
Grouped box plot of significance index, figureFileSmall=oUnr3UshHRM6I4gu6oLW9Q==, figureFileBig=CxWRWDWTkyR79czsFjGb5g==, tableContent=null), ArticleFig(id=1211322035674935754, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=CN, label=图5, caption=
显著性指标分组箱线图, figureFileSmall=oUnr3UshHRM6I4gu6oLW9Q==, figureFileBig=CxWRWDWTkyR79czsFjGb5g==, tableContent=null), ArticleFig(id=1211322035733656012, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=EN, label=Tab.1, caption=
Comparison of the baseline data between hepatic encephalopathy group and control group
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | 肝性脑病组(n=285) | 非肝性脑病组(n=1213) | χ2/t/Z | P |
|---|
| 年龄(岁,$\bar{x}±s$) | 63.0±12.2 | 56.9±12.2 | 7.579 | <0.001 |
| 男性[例(%)] | 201(70.5) | 817(67.4) | 0.926 | 0.336 |
| 吸烟史[例(%)] | 149(52.3) | 530(43.7) | 6.525 | 0.011 |
| 饮酒史[例(%)] | 151(53.0) | 509(42.0) | 10.929 | <0.001 |
| 高血压[例(%)] | 64(22.5) | 142(11.7) | 21.587 | <0.001 |
| 糖尿病[例(%)] | 67(23.5) | 191(15.7) | 9.218 | 0.002 |
| 乙肝[例(%)] | 132(46.3) | 729(60.1) | 17.378 | <0.001 |
| 丙肝[例(%)] | 16(5.6) | 59(4.9) | 0.138 | 0.710 |
| 酒精肝[例(%)] | 84(29.5) | 121(10.0) | 72.637 | <0.001 |
| 自身免疫性肝病[例(%)] | 37(13.0) | 101(8.3) | 5.438 | 0.020 |
| 消化道出血[例(%)] | 61(21.4) | 232(19.1) | 0.622 | 0.430 |
| 腹膜炎[例(%)] | 91(31.9) | 189(15.6) | 39.517 | <0.001 |
| 腹水[例(%)] | 13(4.6) | 41(3.4) | 0.618 | 0.432 |
| 总蛋白(g/L,$\bar{x}±s$) | 64.93±10.33 | 66.22±9.89 | –1.906 | 0.057 |
| 总胆红素[μmol/L,M(Q1,Q3)] | 43.60(25.50,77.70) | 25.00(15.90,49.00) | –8.496 | <0.001 |
| 中性粒细胞比值(%,$\bar{x}±s$) | 70.96±12.63 | 65.87±13.15 | 6.062 | <0.001 |
| 血小板计数[×109/L,M(Q1,Q3)] | 65.00(43.00,112.00) | 71.00(49.00,109.00) | –1.575 | 0.115 |
| 血红蛋白总量(g/L,$\bar{x}±s$) | 95.88±26.93 | 106.75±28.54 | –6.052 | <0.001 |
| 天门冬氨酸氨基转移酶[U/L,M(Q1,Q3)] | 48.00(33.00,70.00) | 50.00(31.00,94.00) | –1.066 | 0.286 |
| 全血钠(mmol/L,$\bar{x}±s$) | 137.00±6.29 | 139.27±4.37 | –5.773 | <0.001 |
| 全血钾(mmol/L,$\bar{x}±s$) | 4.00±0.78 | 3.89±0.62 | 2.091 | 0.037 |
| 全血磷(mmol/L,$\bar{x}±s$) | 1.07±0.38 | 1.07±0.27 | –1.802 | 0.071 |
| 全血氯(mmol/L,$\bar{x}±s$) | 103.94±7.63 | 104.30±5.16 | 0.756 | 0.450 |
| 全血钙(mmol/L,$\bar{x}±s$) | 2.09±0.22 | 2.07±0.23 | –1.200 | 0.231 |
| 全血镁(mmol/L,$\bar{x}±s$) | 0.80±0.14 | 0.79±0.11 | –1.263 | 0.207 |
| 白蛋白(g/L,$\bar{x}±s$) | 28.88±4.63 | 32.52±6.33 | –11.042 | <0.001 |
| 尿酸(μmol/L,$\bar{x}±s$) | 345.65±185.08 | 303.73±128.68 | –3.623 | <0.001 |
| 红细胞计数(×1012/L,$\bar{x}±s$) | 3.11±0.84 | 3.56±0.86 | 8.046 | <0.001 |
| 淋巴细胞比值[%,M(Q1,Q3)] | 17.90(10.42,23.54) | 23.10(14.92,30.30) | –7.229 | <0.001 |
| 凝血酶原活性度(%,$\bar{x}±s$) | 51.47±14.91 | 69.82±17.68 | –17.988 | <0.001 |
| 尿素氮[mmol/L,M(Q1,Q3)] | 6.96(4.89,10.40) | 5.32(4.17,7.27) | –7.504 | <0.001 |
| 碱性磷酸酶[U/L,M(Q1,Q3)] | 115.46(87.00,162.00) | 109.00(80.00,154.00) | –1.788 | 0.074 |
| 丙氨酸氨基转移酶[U/L,M(Q1,Q3)] | 28.15(20.80,44.00) | 35.00(21.00,70.00) | –4.007 | <0.001 |
| 白细胞计数[×109/L,M(Q1,Q3)] | 4.61(3.24,7.38) | 4.10(2.88,5.88) | –3.845 | <0.001 |
), ArticleFig(id=1211322035821736397, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=CN, label=表1, caption=
肝性脑病组与非肝性脑病组患者基线资料比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | 肝性脑病组(n=285) | 非肝性脑病组(n=1213) | χ2/t/Z | P |
|---|
| 年龄(岁,$\bar{x}±s$) | 63.0±12.2 | 56.9±12.2 | 7.579 | <0.001 |
| 男性[例(%)] | 201(70.5) | 817(67.4) | 0.926 | 0.336 |
| 吸烟史[例(%)] | 149(52.3) | 530(43.7) | 6.525 | 0.011 |
| 饮酒史[例(%)] | 151(53.0) | 509(42.0) | 10.929 | <0.001 |
| 高血压[例(%)] | 64(22.5) | 142(11.7) | 21.587 | <0.001 |
| 糖尿病[例(%)] | 67(23.5) | 191(15.7) | 9.218 | 0.002 |
| 乙肝[例(%)] | 132(46.3) | 729(60.1) | 17.378 | <0.001 |
| 丙肝[例(%)] | 16(5.6) | 59(4.9) | 0.138 | 0.710 |
| 酒精肝[例(%)] | 84(29.5) | 121(10.0) | 72.637 | <0.001 |
| 自身免疫性肝病[例(%)] | 37(13.0) | 101(8.3) | 5.438 | 0.020 |
| 消化道出血[例(%)] | 61(21.4) | 232(19.1) | 0.622 | 0.430 |
| 腹膜炎[例(%)] | 91(31.9) | 189(15.6) | 39.517 | <0.001 |
| 腹水[例(%)] | 13(4.6) | 41(3.4) | 0.618 | 0.432 |
| 总蛋白(g/L,$\bar{x}±s$) | 64.93±10.33 | 66.22±9.89 | –1.906 | 0.057 |
| 总胆红素[μmol/L,M(Q1,Q3)] | 43.60(25.50,77.70) | 25.00(15.90,49.00) | –8.496 | <0.001 |
| 中性粒细胞比值(%,$\bar{x}±s$) | 70.96±12.63 | 65.87±13.15 | 6.062 | <0.001 |
| 血小板计数[×109/L,M(Q1,Q3)] | 65.00(43.00,112.00) | 71.00(49.00,109.00) | –1.575 | 0.115 |
| 血红蛋白总量(g/L,$\bar{x}±s$) | 95.88±26.93 | 106.75±28.54 | –6.052 | <0.001 |
| 天门冬氨酸氨基转移酶[U/L,M(Q1,Q3)] | 48.00(33.00,70.00) | 50.00(31.00,94.00) | –1.066 | 0.286 |
| 全血钠(mmol/L,$\bar{x}±s$) | 137.00±6.29 | 139.27±4.37 | –5.773 | <0.001 |
| 全血钾(mmol/L,$\bar{x}±s$) | 4.00±0.78 | 3.89±0.62 | 2.091 | 0.037 |
| 全血磷(mmol/L,$\bar{x}±s$) | 1.07±0.38 | 1.07±0.27 | –1.802 | 0.071 |
| 全血氯(mmol/L,$\bar{x}±s$) | 103.94±7.63 | 104.30±5.16 | 0.756 | 0.450 |
| 全血钙(mmol/L,$\bar{x}±s$) | 2.09±0.22 | 2.07±0.23 | –1.200 | 0.231 |
| 全血镁(mmol/L,$\bar{x}±s$) | 0.80±0.14 | 0.79±0.11 | –1.263 | 0.207 |
| 白蛋白(g/L,$\bar{x}±s$) | 28.88±4.63 | 32.52±6.33 | –11.042 | <0.001 |
| 尿酸(μmol/L,$\bar{x}±s$) | 345.65±185.08 | 303.73±128.68 | –3.623 | <0.001 |
| 红细胞计数(×1012/L,$\bar{x}±s$) | 3.11±0.84 | 3.56±0.86 | 8.046 | <0.001 |
| 淋巴细胞比值[%,M(Q1,Q3)] | 17.90(10.42,23.54) | 23.10(14.92,30.30) | –7.229 | <0.001 |
| 凝血酶原活性度(%,$\bar{x}±s$) | 51.47±14.91 | 69.82±17.68 | –17.988 | <0.001 |
| 尿素氮[mmol/L,M(Q1,Q3)] | 6.96(4.89,10.40) | 5.32(4.17,7.27) | –7.504 | <0.001 |
| 碱性磷酸酶[U/L,M(Q1,Q3)] | 115.46(87.00,162.00) | 109.00(80.00,154.00) | –1.788 | 0.074 |
| 丙氨酸氨基转移酶[U/L,M(Q1,Q3)] | 28.15(20.80,44.00) | 35.00(21.00,70.00) | –4.007 | <0.001 |
| 白细胞计数[×109/L,M(Q1,Q3)] | 4.61(3.24,7.38) | 4.10(2.88,5.88) | –3.845 | <0.001 |
), ArticleFig(id=1211322035914011087, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=EN, label=Tab.2, caption=
Influencing factors of hepatic encephalopathy (logistic regression model)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | β | SE | OR | 95%CI | P |
|---|
| 高血压 | 0.850 | 0.263 | 2.340 | 1.397~3.918 | 0.001 |
| 酒精肝 | 1.173 | 0.232 | 3.232 | 2.051~5.092 | <0.001 |
| 糖尿病 | 0.550 | 0.241 | 1.733 | 1.081~2.780 | 0.022 |
| 自身免疫性肝病 | 0.641 | 0.324 | 1.898 | 1.006~3.582 | 0.048 |
| 年龄 | 0.044 | 0.008 | 1.045 | 1.029~1.061 | <0.001 |
| 全血钠 | –0.037 | 0.019 | 0.964 | 0.928~1.000 | 0.045 |
| 凝血酶原活动度 | –0.069 | 0.007 | 0.933 | 0.921~0.946 | <0.001 |
| 尿素氮 | 0.061 | 0.020 | 1.063 | 1.022~1.105 | 0.003 |
| 淋巴细胞比值 | –0.016 | 0.010 | 0.984 | 0.965~1.004 | 0.123 |
| 红细胞计数 | –0.200 | 0.122 | 0.819 | 0.645~1.040 | 0.100 |
), ArticleFig(id=1211322035976925649, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=CN, label=表2, caption=
Logistic回归分析肝性脑病的影响因素
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | β | SE | OR | 95%CI | P |
|---|
| 高血压 | 0.850 | 0.263 | 2.340 | 1.397~3.918 | 0.001 |
| 酒精肝 | 1.173 | 0.232 | 3.232 | 2.051~5.092 | <0.001 |
| 糖尿病 | 0.550 | 0.241 | 1.733 | 1.081~2.780 | 0.022 |
| 自身免疫性肝病 | 0.641 | 0.324 | 1.898 | 1.006~3.582 | 0.048 |
| 年龄 | 0.044 | 0.008 | 1.045 | 1.029~1.061 | <0.001 |
| 全血钠 | –0.037 | 0.019 | 0.964 | 0.928~1.000 | 0.045 |
| 凝血酶原活动度 | –0.069 | 0.007 | 0.933 | 0.921~0.946 | <0.001 |
| 尿素氮 | 0.061 | 0.020 | 1.063 | 1.022~1.105 | 0.003 |
| 淋巴细胞比值 | –0.016 | 0.010 | 0.984 | 0.965~1.004 | 0.123 |
| 红细胞计数 | –0.200 | 0.122 | 0.819 | 0.645~1.040 | 0.100 |
), ArticleFig(id=1211322037214245331, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=EN, label=Tab.3, caption=
Index importance of random forest model
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| 指标 | MDA(%) |
|---|
| 凝血酶原活动度 | 46.52 |
| 全血钠 | 26.76 |
| 年龄 | 24.01 |
| 白蛋白 | 20.76 |
| 尿酸 | 20.19 |
| 尿素氮 | 20.09 |
| 总胆红素 | 19.72 |
| 白细胞计数 | 18.17 |
| 全血钾 | 17.87 |
| 丙氨酸氨基转移酶 | 17.52 |
| 红细胞计数 | 17.47 |
| 淋巴细胞比值 | 17.30 |
| 中性粒细胞比值 | 16.07 |
| 血红蛋白总量 | 15.26 |
| 酒精肝 | 8.02 |
| 高血压 | 4.31 |
| 乙肝 | 3.15 |
| 饮酒史 | 2.96 |
| 腹膜炎 | 2.92 |
| 糖尿病 | 2.65 |
| 吸烟史 | 2.54 |
| 自身免疫性肝病 | 2.16 |
), ArticleFig(id=1211322037293937109, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=CN, label=表3, caption=
随机森林模型的指标重要性测度
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | MDA(%) |
|---|
| 凝血酶原活动度 | 46.52 |
| 全血钠 | 26.76 |
| 年龄 | 24.01 |
| 白蛋白 | 20.76 |
| 尿酸 | 20.19 |
| 尿素氮 | 20.09 |
| 总胆红素 | 19.72 |
| 白细胞计数 | 18.17 |
| 全血钾 | 17.87 |
| 丙氨酸氨基转移酶 | 17.52 |
| 红细胞计数 | 17.47 |
| 淋巴细胞比值 | 17.30 |
| 中性粒细胞比值 | 16.07 |
| 血红蛋白总量 | 15.26 |
| 酒精肝 | 8.02 |
| 高血压 | 4.31 |
| 乙肝 | 3.15 |
| 饮酒史 | 2.96 |
| 腹膜炎 | 2.92 |
| 糖尿病 | 2.65 |
| 吸烟史 | 2.54 |
| 自身免疫性肝病 | 2.16 |
), ArticleFig(id=1211322037352657367, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=EN, label=Tab.4, caption=
Analysis of decision tree model parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分裂次数 | 预测误差估计 | 预测误差标准误 | 交叉验证预测误差 | CP值 |
|---|
| 0 | 1.000 | 0.063 | 1.000 | 0.054 |
| 2 | 0.891 | 0.064 | 1.030 | 0.043 |
| 4 | 0.822 | 0.062 | 0.936 | 0.029 |
| 6 | 0.772 | 0.062 | 0.970 | 0.024 |
| 9 | 0.703 | 0.063 | 0.975 | 0.019 |
| 14 | 0.629 | 0.063 | 0.990 | 0.012 |
), ArticleFig(id=1211322037419766233, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=CN, label=表4, caption=
决策树模型参数分析
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分裂次数 | 预测误差估计 | 预测误差标准误 | 交叉验证预测误差 | CP值 |
|---|
| 0 | 1.000 | 0.063 | 1.000 | 0.054 |
| 2 | 0.891 | 0.064 | 1.030 | 0.043 |
| 4 | 0.822 | 0.062 | 0.936 | 0.029 |
| 6 | 0.772 | 0.062 | 0.970 | 0.024 |
| 9 | 0.703 | 0.063 | 0.975 | 0.019 |
| 14 | 0.629 | 0.063 | 0.990 | 0.012 |
), ArticleFig(id=1211322037491069403, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=EN, label=Tab.5, caption=
Comparison of the prediction performance of four models in test set
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 灵敏度 | 特异度 | 阳性预测率 | 阴性预测率 | 准确率 | AUC |
|---|
| Logistic回归模型 | 0.843 | 0.785 | 0.470 | 0.957 | 0.796 | 0.875 |
| 随机森林模型 | 0.904 | 0.695 | 0.401 | 0.970 | 0.733 | 0.883 |
| 决策树模型 | 0.759 | 0.717 | 0.378 | 0.929 | 0.724 | 0.767 |
| XGBoost模型 | 0.892 | 0.706 | 0.407 | 0.966 | 0.740 | 0.847 |
), ArticleFig(id=1211322037549789661, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1211269164224868941, language=CN, label=表5, caption=
各模型在测试集中的预测性能比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 灵敏度 | 特异度 | 阳性预测率 | 阴性预测率 | 准确率 | AUC |
|---|
| Logistic回归模型 | 0.843 | 0.785 | 0.470 | 0.957 | 0.796 | 0.875 |
| 随机森林模型 | 0.904 | 0.695 | 0.401 | 0.970 | 0.733 | 0.883 |
| 决策树模型 | 0.759 | 0.717 | 0.378 | 0.929 | 0.724 | 0.767 |
| XGBoost模型 | 0.892 | 0.706 | 0.407 | 0.966 | 0.740 | 0.847 |
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