this is for holding javascript data
fedhere edited section_Requirements_We_want_the__.tex
almost 8 years ago
Commit id: f639d33f511aef423577693fd3924f629f9b7e38
deletions | additions
diff --git a/section_Requirements_We_want_the__.tex b/section_Requirements_We_want_the__.tex
index ca93929..b5921c8 100644
--- a/section_Requirements_We_want_the__.tex
+++ b/section_Requirements_We_want_the__.tex
...
I choose a square exponential kernel ({\tt ExpSquaredKernel} in {\tt george}) $$k(d)=θ_1^2 \exp(\frac{−d^2}{θ_2^2})$$.
In order to choose the hyperparameters $θ_1^2$ and $θ_2^2$ I minimize the objective function: $\chi^2(m) ~*~
\sum \sqrt{\sum_t { \left|
\sqrt{\frac{d^2 \frac{d^2 m}{dt^2} }\right| }$, where $m$ is the magnitude, and the fit is done in log time. This works remarkably well in general, with some ``pathological'' exceptions.