Date:         Wed, 5 Sep 2007 07:28:30 -0700
Reply-To:     shiling99@YAHOO.COM
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Shiling Zhang <shiling99@YAHOO.COM>
Organization: http://groups.google.com
Subject:      Re: a bounded logit model
Comments: To: sas-l@uga.edu
In-Reply-To:  <1188623502.772799.36400@d55g2000hsg.googlegroups.com>
Content-Type: text/plain; charset="gb2312"

On Sep 1, 1:11 am, WangGuang...@gmail.com wrote:
> hi,everyone,
> I meet a difficulty when i want to fit a bounded logit model,p(y=1|
> X)=¦Ø(exp(X¦Â))/(1+exp(X¦Â),where ¦Ø is also a parameter, representing the
> ceiling of p.and when ¦Ø=1,the model is a plain logit model.
> The question is how can i estimate ¦Ø, as well as ¦Â£¬with SAS?
> Thanks all

It seems to me you did not tell the story about why/how ¦Ø is defined.
If you could provide more details, I am sure someone on the list can
help you.