典型文献
Presentation of regression analysis,GP and GMDH models to predict the pedestrian density in various urban facilities
文献摘要：
In this study,the relationship between space mean speed(SMS),flow rate and density of pedestrians was investigated in different pedestrian facilities,including 1 walkway,2 sidewalks,2 signalized crosswalks and 2 mid-block crosswalks.First,statistical analysis was performed to investigate the normality of data and correlation of variables.Regression analysis was then applied to determine the relationship between SMS,flow rate,and density of pedestrians.Finally,two prediction models of density were obtained using genetic programming(GP)and group method of data handling(GMDH)models,and k-fold and holdout cross-validation methods were used to evaluate the models.By the use of regression analysis,the mathematical relationships between variables in all facilities were calculated and plotted,and the best relationships were observed in flow rate-density diagrams.Results also indicated that GP had a higher R2 than GMDH in the prediction of pedestrian density in terms of flow rate and SMS,suggesting that GP was better able to model SMS and pedestrian density.Moreover,the application of k-fold cross-validation method in the models led to better performances compared to the holdout cross-validation method,which shows that the prediction models using k-fold were more reliable.Finally,density relationships in all facilities were obtained in terms of SMS and flow rate.
文献关键词：
中图分类号：
作者姓名：
Iraj BARGEGOL;Seyed Mohsen HOSSEINIAN;Vahid NAJAFIMOGHADDAM GILANI;Mohammad NIKOOKAR;Alireza OROUEI
作者机构：
School of Civil Engineering,University of Guilan,Rasht 41996-13776,Iran;School of Civil Engineering,Iran University of Science and Technology(IUST),Tehran 13114-16846,Iran;School of Civil Engineering,Islamic Azad University,Semnan 35131-37111,Iran
文献出处：
引用格式：
[1]Iraj BARGEGOL;Seyed Mohsen HOSSEINIAN;Vahid NAJAFIMOGHADDAM GILANI;Mohammad NIKOOKAR;Alireza OROUEI-.Presentation of regression analysis,GP and GMDH models to predict the pedestrian density in various urban facilities)[J].结构与土木工程前沿,2022(02):250-265
A类：
walkway,signalized,crosswalks,holdout
B类：
Presentation,regression,analysis,GP,GMDH,models,density,various,urban,facilities,In,this,study,between,space,mean,speed,SMS,flow,rate,pedestrians,was,investigated,different,including,sidewalks,mid,block,First,statistical,performed,normality,data,correlation,variables,Regression,then,applied,determine,Finally,two,prediction,were,obtained,using,genetic,programming,group,handling,fold,validation,methods,used,evaluate,By,mathematical,relationships,calculated,plotted,best,observed,diagrams,Results,also,indicated,that,had,higher,than,terms,suggesting,better,Moreover,application,led,performances,compared,which,shows,more,reliable
AB值：
0.410292
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