View unanswered posts | View active topics
Forum rules
1. This forum can be used for discussion of both ALGLIB-related and general numerical analysis questions
2. This forum is English-only - postings in other languages will be removed.
|
Page 1 of 1
|
[ 3 posts ] |
|
Author |
Message |
mhavel
|
Post subject: Optimum knots that represent a curve Posted: Tue May 15, 2012 8:55 pm |
|
Joined: Wed Mar 14, 2012 4:54 pm Posts: 9
|
Hi Sergey,
I'm looking for a way to get the optimum number of knots (and their position) to fully describe a curve without loosing information (especially when the the variations are rapid and strong).
Do you have any function that could help me in this task?
Regards.
|
|
Top |
|
|
Sergey.Bochkanov
|
Post subject: Re: Optimum knots that represent a curve Posted: Thu May 17, 2012 5:53 am |
|
|
Site Admin |
Joined: Fri May 07, 2010 7:06 am Posts: 927
|
No, there is no out-of-box support for such functionality. You may try to minimize interpolation error with respect to nodes locations. You will have following problem: * optimization space - space of all possible nodes locations * function being minimized - error of the interpolant built using given set of nodes * additional penalty for having too close nodes is necessary * optimization is performed using numerical differentiation
|
|
Top |
|
|
mhavel
|
Post subject: Re: Optimum knots that represent a curve Posted: Sun May 20, 2012 2:22 am |
|
Joined: Wed Mar 14, 2012 4:54 pm Posts: 9
|
Ok, thanks for you answer. I'll do it in another way.
|
|
Top |
|
|
|
Page 1 of 1
|
[ 3 posts ] |
|
Who is online |
Users browsing this forum: No registered users and 39 guests |
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum
|