Abstract #301157

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 2002 Program page
JSM 2002 Abstract #301157
Activity Number: 49
Type: Contributed
Date/Time: Sunday, August 11, 2002 : 4:00 PM to 5:50 PM
Sponsor: Business & Economics Statistics Section*
Abstract - #301157
Title: Impact of Population Changes on Score Based Portfoio Decision
Author(s): Timothy Lee*+ and Sung-Chang Jung
Affiliation(s): Equifax Decision Solutions and Chonnam National University
Address: 595 Croydon Lane, Alpharetta, Georgia, 30022, U.S.A.
Keywords: Classification ; Score based decision ; Population shift
Abstract:

Score developed by using statistical classification approaches based on individual profile characteristics is a basic tool for portfolio decision. Changes of economy, culture, or age, etc. would cause changes to profile characteristics for individuals or business entities, i.e., population shift. Population shift would, in turn, mean changes to decision-supporting algothms derived based on profile characteristics. Therefore, decisions based on scores, or other algorithms derived from profile chracteristics, are likely to be affected as any change occurs to individual profiles in a portfolio.

In this study, the impact of population shift on score-based decisions, including binary and proressive actions, is discussed by using simulated data. Also, sensitivity of single and fusion scores is discussed in relation to score-based decision. Finally, simple but practical diagnostics for population shift, and remedies for population shift, are suggested in practitioners' point of view.

  • 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 2002 program

JSM 2002

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 2002