第5回東京工業大学TSU (Transport Studies Unit)セミナー
http://www.transport-titech.jp/

日時：2012年6月29日(金）17：30-19：00

場所：東京工業大学創造プロジェクト館1F大会議室
http://www.plan.cv.titech.ac.jp/fukudalab/contact/
（東急大井町線緑が丘駅徒歩8分）


講師：Maya Abou-Zeid氏
（American University of Beirut 講師，MIT-ITSプログラム研究員）

講演タイトル：Attitudes and Value of Time Heterogeneity
　　　　　　　（態度と時間価値異質性の関連性）

概要：There is ample evidence showing a high level of heterogeneity of 
values of time among travelers. Previous studies have represented this
heterogeneity by a distribution such as lognormal whose parameters depend 
on covariates like income, trip purpose, and mode of travel.
We present and demonstrate a model where the distribution of the value of
time also depends on attitudes towards travel. Attitudes are latent, or
unobservable, and their distribution determines the conditional distribution
of the value of time given the observable covariates such as income. We
illustrate this model using data from a stated preferences survey. The
estimation results show that as expected the median value of time increases
with income and that the variability of value of time also increases with
income reflecting the greater effect that the attitude towards travel has 
for high income groups.