Re: Logistic Regression
- From: Graham Jones <graham@xxxxxxxxxxx>
- Date: Tue, 24 May 2005 14:42:55 +0100
In article <1116924076.543755.158480@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
clemenr@xxxxxxxxxx writes
>When I apply my program to test problems, it usually quickly finds a
>very close fit, where my 10 "0" texts are assigned a probability very
>close to zero, and my 10 "1" texts are assigned a probability very
>close to one. However, sometimes, particularly when I have 10 or more
>dimensions, I either find a fit that assigns a probability of 0 to all
>texts, or simply fails to converge (sum of absolute values of
>differences to be added to the weights < 0.01) in any reasonable time.
>Usually convergence happens in a very short time.
[...]
If the classes are linearly separable, some of the weights will tend to
infinity. Are the weights at the end of a run very big?
--
Graham Jones
http://www.visiv.co.uk
Emails to graham@xxxxxxxxxxx may be deleted as spam
Please add a j just before the @ to ensure delivery
.
- References:
- Logistic Regression
- From: clemenr
- Logistic Regression
- Prev by Date: Re: Logistic Regression
- Next by Date: Re: Logistic Regression
- Previous by thread: Re: Logistic Regression
- Next by thread: Re: Logistic Regression
- Index(es):
Relevant Pages
|
