Abstract #301154

This is the preliminary program for the 2003 Joint Statistical Meetings in San Francisco, California. Currently included in this program is the "technical" program, schedule of invited, topic contributed, regular contributed and poster sessions; Continuing Education courses (August 2-5, 2003); and Committee and Business Meetings. This on-line program will be updated frequently to reflect the most current revisions.

To View the Program:
You may choose to view all activities of the program or just parts of it at any one time. All activities are arranged by date and time.

The views expressed here are those of the individual authors
and not necessarily those of the ASA or its board, officers, or staff.

Back to main JSM 2003 Program page
JSM 2003 Abstract #301154
Activity Number: 91
Type: Contributed
Date/Time: Monday, August 4, 2003 : 8:30 AM to 10:20 AM
Sponsor: Social Statistics Section
Abstract - #301154
Title: Statistical Modeling of Individual Trip Frequency Using Household Surveys of Travel Behavior
Author(s): Supriti Singh*+ and Duane L. Steffey
Companies: Fair Isaac Corporation and San Diego State University
Address: 11595-5 Compass Point Dr. North, San Diego, CA, 92126,
Keywords: trip frequency ; generalized linear models ; Dirichlet-multinomial distribution ; within-household correlation
Abstract:

Approaches to modeling human travel behavior typically use the household as the unit of analysis. Although a household-based approach might have seemed natural in previous eras, society's increasing motorization suggests that individual-based models would more adequately capture the travel dynamics of contemporary life. Developing individual-based models from household surveys, however, requires modeling of the likely correlated behavior of individuals within the same household. This study develops individual-based models using data on trip frequency (i.e., the number of trips taken in a particular day) from a recent travel behavior survey conducted in San Diego. Several approaches are considered, including generalized linear models and adjustments of Pearson chi-squared statistics based on the Dirichlet-multinomial model. These approaches yield estimates of within-household correlation, as well as the influence of both household and individual covariates on trip frequency.

  • The address information is for the authors that have a + after their name.
  • Authors who are presenting talks have a * after their name.

Back to the full JSM 2003 program

JSM 2003 For information, contact meetings@amstat.org or phone (703) 684-1221. If you have questions about the Continuing Education program, please contact the Education Department.
Revised March 2003