Hi all.
I am modeling interfirm relationships over time. My data would look like
this:
YEAR COUPLE TOGETHER NEW_RELATIONSHIP DIVORCE
1918 1 0 0
0
1919 1 1 1
0
1920 1 1 0
1
1921 1 0 0
0
1922 1 0 0
0
1923 1 1 1
0
1924 1 1 0
1
1925 1 0 0
0
So, these firms had two relationships. One started in 1919 and ended in
at the end of 1920. The other started in 1923 and ended in 1924. I want
to model these separately. There is no chance of relationships
overlapping, or even abutting each other. There is always at least a
year before one ending and the next starting.
I'm trying to figure out how to set the origin for the second
relationship. Using origin(NEW_RELATIONSHIP) works for the first one,
but I don't want to model the second as starting in 1919, I want it to
start in 1923. However, I can't figure out how to do this.
Any suggestions would be very welcome. Thanks!
Glenn Hoetker
Glenn Hoetker
Assistant Professor of Strategy
College of Business
University of Illinois at Urbana-Champaign
217-265-4081
[email protected]
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