There are 6 files in this directory.
Data files:
     DATA.TXT
     ABSENTEEDAT.TXT
M files:
     ABSENTEE.M
     BETA.M
     BETA2.M
and
     Readme.TXT
Make sure they are in the working directory of Matlab and run the M files. The outcomes will be stored in some TXT files and Figures will be stored as EPS files. 