What is the actual constraint you're trying to enforce?
- Bob
P.S. We've moved to: http://discourse.mc-stan.org and will
be closing this list in a couple weeks.
> On May 26, 2017, at 5:58 AM, Julian King <jking...@gmail.com> wrote:
>
> Hello Stan repository of knowledge.
>
> Is there any easy way to guarantee that a fitted spline is monotonic?
>
> Perhaps manually calculate the derivative at all of the sets of points (ie using calculus, by hand) and then include a constraint within Stan?
>
> I realise Stan doesn't like hard constraints, so maybe you would need to use a logistic function instead of a Heaviside constraint...
>
> Suggestions appreciated!
>
> Thanks!
> Julian
>
>
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