Exploring the Nonlinear Effects of Built Environment on Bus-Transfer Ridership: Take Shanghai as an Example

In this paper, the nonlinear effects of the built environment on bus–metro-transfer ridership are explored, based on Shanghai metro data, with an extreme gradient-boosting decision-trees (XGBoost) model. It was found that the bus-network density had the largest influence on transfer ridership, contr...

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Main Authors: Ding Liu, Wuyue Rong, Jin Zhang, Ying-En (Ethan) Ge
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/12/11/5755
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author Ding Liu
Wuyue Rong
Jin Zhang
Ying-En (Ethan) Ge
author_facet Ding Liu
Wuyue Rong
Jin Zhang
Ying-En (Ethan) Ge
author_sort Ding Liu
collection DOAJ
description In this paper, the nonlinear effects of the built environment on bus–metro-transfer ridership are explored, based on Shanghai metro data, with an extreme gradient-boosting decision-trees (XGBoost) model. It was found that the bus-network density had the largest influence on transfer ridership, contributing 27.56% predictive power for transfer ridership, followed by closeness centrality and bus-stop density, and their contribution rates are 21.6% and 17.27%, respectively. Local explanations for the model reveal the following conclusions: most built-environment variables have nonlinear and threshold effects on bus–metro ridership. The suggested values for the dominant contributors to bus–metro-transfer ridership are obtained. For example, bus-network density, bus-stop density, and closeness centrality were 12.8 km/sq. km, 11 counts/sq. km, and 0.18 km/sq. km, respectively, for maximizing bus–metro-transfer ridership. The interaction impacts of the bus–metro connection characteristics and the closeness centrality of metro stations on transfer ridership were, also, examined. The result showed that the setting of bus–metro-transfer facilities depended on the location of metro stations. It was necessary to improve the bus–metro-connection system, in metro stations with high closeness centrality.
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spelling doaj.art-6c816112dcbb45a1b7db762e97b84bba2023-11-23T13:47:21ZengMDPI AGApplied Sciences2076-34172022-06-011211575510.3390/app12115755Exploring the Nonlinear Effects of Built Environment on Bus-Transfer Ridership: Take Shanghai as an ExampleDing Liu0Wuyue Rong1Jin Zhang2Ying-En (Ethan) Ge3College of Transport & Communications, Shanghai Maritime University, Shanghai 201306, ChinaCollege of Transport & Communications, Shanghai Maritime University, Shanghai 201306, ChinaCollege of Transport & Communications, Shanghai Maritime University, Shanghai 201306, ChinaCollege of Transport & Communications, Shanghai Maritime University, Shanghai 201306, ChinaIn this paper, the nonlinear effects of the built environment on bus–metro-transfer ridership are explored, based on Shanghai metro data, with an extreme gradient-boosting decision-trees (XGBoost) model. It was found that the bus-network density had the largest influence on transfer ridership, contributing 27.56% predictive power for transfer ridership, followed by closeness centrality and bus-stop density, and their contribution rates are 21.6% and 17.27%, respectively. Local explanations for the model reveal the following conclusions: most built-environment variables have nonlinear and threshold effects on bus–metro ridership. The suggested values for the dominant contributors to bus–metro-transfer ridership are obtained. For example, bus-network density, bus-stop density, and closeness centrality were 12.8 km/sq. km, 11 counts/sq. km, and 0.18 km/sq. km, respectively, for maximizing bus–metro-transfer ridership. The interaction impacts of the bus–metro connection characteristics and the closeness centrality of metro stations on transfer ridership were, also, examined. The result showed that the setting of bus–metro-transfer facilities depended on the location of metro stations. It was necessary to improve the bus–metro-connection system, in metro stations with high closeness centrality.https://www.mdpi.com/2076-3417/12/11/5755built environmenttransfer ridershipextreme gradient-boosting decision treenonlinear effectbus–metro connection characteristics
spellingShingle Ding Liu
Wuyue Rong
Jin Zhang
Ying-En (Ethan) Ge
Exploring the Nonlinear Effects of Built Environment on Bus-Transfer Ridership: Take Shanghai as an Example
Applied Sciences
built environment
transfer ridership
extreme gradient-boosting decision tree
nonlinear effect
bus–metro connection characteristics
title Exploring the Nonlinear Effects of Built Environment on Bus-Transfer Ridership: Take Shanghai as an Example
title_full Exploring the Nonlinear Effects of Built Environment on Bus-Transfer Ridership: Take Shanghai as an Example
title_fullStr Exploring the Nonlinear Effects of Built Environment on Bus-Transfer Ridership: Take Shanghai as an Example
title_full_unstemmed Exploring the Nonlinear Effects of Built Environment on Bus-Transfer Ridership: Take Shanghai as an Example
title_short Exploring the Nonlinear Effects of Built Environment on Bus-Transfer Ridership: Take Shanghai as an Example
title_sort exploring the nonlinear effects of built environment on bus transfer ridership take shanghai as an example
topic built environment
transfer ridership
extreme gradient-boosting decision tree
nonlinear effect
bus–metro connection characteristics
url https://www.mdpi.com/2076-3417/12/11/5755
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