학술논문

A COPULA-BASED SIMULTANEOUS-EQUATION MODEL OF VEHICLE HOLDING DURATION AND TRAVEL DISTANCE / コピュラを用いた自動車保有期間と走行距離の同時決定モデルの開発
Document Type
Journal Article
Source
土木学会論文集D / Doboku Gakkai Ronbunshuu D. 2010, 66(1):54
Subject
car holding duration
copula
multivariate survival duration
travel distance
Language
Japanese
ISSN
1880-6058
Abstract
Focusing on household behavior of vehicle holding duration and annual traveling distance, this study proposed a Copula-based Multivariate Survival model in order to capture the interdependence between these two behaviors. The proposed model was applied for the household vehicle holding data surveied in Chugoku region, Japan in 2006. The estimated model showed the effectiveness in terms of model performance and applicability, comparing with the conventional independent modeling approach. Comparative analyses of the different types of copulas supported the use of Clayton copula. The estimated copula parameter indicated the significant negative correlation between vehicle holding and vehicle use.