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NNPDF / nnusf

An open source machine learning framework that provides predictions for all-energy neutrino structure functions.
https://nnpdf.github.io/nnusf/
GNU General Public License v3.0
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Improve predictions in the small-x extrapolation region #53

Closed Radonirinaunimi closed 1 year ago

Radonirinaunimi commented 1 year ago

With 42cb7e3, the NN function (especially for $F_2$) saturates in the small $x$ extrapolation region.

Screenshot 2022-10-05 at 14 45 44 Screenshot 2022-10-05 at 14 45 59

There are several possibilities to address this but the easiest check would be to use a linear activation throughout the network and use $\ln (x)$ in the input instead of $x$.

Radonirinaunimi commented 1 year ago

Also closing this as addressed by https://github.com/NNPDF/nnusf/pull/64.