{"title":"加权概率自举法与鲁棒Lars方法的集成用于高维异常值线性回归模型的变量选择","authors":"Zenah Hikmet, Basim Shlaiba","doi":"10.29124/kjeas.1547.19","DOIUrl":null,"url":null,"abstract":"In this research, a new algorithm was proposed to select the important variables in the regression model with the presence of two problems of high dimensions and outliers by employing and integrating the weighted bootstrap probability - Robust Least Angle Regression Selecting (WBP-LARS) and comparing it with another selection method. It is a method of impregnable Lars based on the regular bootstrap method, known as (B-LARS), empirically simulated and applied, based on real data related to the market value of some private banks in the stock market for the period 2010-2017. The comparison in the simulation included two cases for the required number of explanatory variables Choosing (K = 5, K = 7) as well as two cases when (n>P) (n<P) and sample sizes (50, 70, 20, 26) with a correlation value of 0.95 and with different contamination rates α = (0.05, 0.10, 0.15) The research concluded with conclusions, the most important of which is determining the number of important variables between the numbers 7-10, the preference of the (WBP-LARS) method over the (B-LARS) method when (n>P), while a slight preference for the (B-LARS) method appeared over the proposed method when ( n<P) and the sample size is far from the total number of variables in the model, but the efficiency converges whenever the sample size is very close to the number of variables and can be relied upon in the selection process for the variables in this case","PeriodicalId":181022,"journal":{"name":"Al Kut Journal of Economics and Administrative Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Integration of the weighted probabilistic bootstrap with the robust Lars method for selecting variables in linear regression model with problems of high dimensions and outliers\",\"authors\":\"Zenah Hikmet, Basim Shlaiba\",\"doi\":\"10.29124/kjeas.1547.19\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this research, a new algorithm was proposed to select the important variables in the regression model with the presence of two problems of high dimensions and outliers by employing and integrating the weighted bootstrap probability - Robust Least Angle Regression Selecting (WBP-LARS) and comparing it with another selection method. It is a method of impregnable Lars based on the regular bootstrap method, known as (B-LARS), empirically simulated and applied, based on real data related to the market value of some private banks in the stock market for the period 2010-2017. The comparison in the simulation included two cases for the required number of explanatory variables Choosing (K = 5, K = 7) as well as two cases when (n>P) (n<P) and sample sizes (50, 70, 20, 26) with a correlation value of 0.95 and with different contamination rates α = (0.05, 0.10, 0.15) The research concluded with conclusions, the most important of which is determining the number of important variables between the numbers 7-10, the preference of the (WBP-LARS) method over the (B-LARS) method when (n>P), while a slight preference for the (B-LARS) method appeared over the proposed method when ( n<P) and the sample size is far from the total number of variables in the model, but the efficiency converges whenever the sample size is very close to the number of variables and can be relied upon in the selection process for the variables in this case\",\"PeriodicalId\":181022,\"journal\":{\"name\":\"Al Kut Journal of Economics and Administrative Sciences\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-06-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Al Kut Journal of Economics and Administrative Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.29124/kjeas.1547.19\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Al Kut Journal of Economics and Administrative Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.29124/kjeas.1547.19","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
针对存在高维和离群值两大问题的回归模型,提出了一种新的选择算法——鲁棒最小角度回归选择(Robust Least Angle regression selection, WBP-LARS),并将其与另一种选择方法进行比较。它是一种基于常规bootstrap方法的坚不可摧的Lars方法,称为(B-LARS),基于2010-2017年部分私人银行股票市场市值相关的真实数据进行实证模拟和应用。仿真中的比较包括(K = 5, K = 7)所需解释变量数选择的两种情况以及(n>P) (nP)的两种情况,而当(n
Integration of the weighted probabilistic bootstrap with the robust Lars method for selecting variables in linear regression model with problems of high dimensions and outliers
In this research, a new algorithm was proposed to select the important variables in the regression model with the presence of two problems of high dimensions and outliers by employing and integrating the weighted bootstrap probability - Robust Least Angle Regression Selecting (WBP-LARS) and comparing it with another selection method. It is a method of impregnable Lars based on the regular bootstrap method, known as (B-LARS), empirically simulated and applied, based on real data related to the market value of some private banks in the stock market for the period 2010-2017. The comparison in the simulation included two cases for the required number of explanatory variables Choosing (K = 5, K = 7) as well as two cases when (n>P) (n
P), while a slight preference for the (B-LARS) method appeared over the proposed method when ( n