Any idea about why, on the neuralnet package, the sse function for parameter: err.fct divides by 2 the Sum of Squared Errors?
From the document:
we have the following text:

we can ignore the Sum of H (outputs) and assume we only have just one output (H = 1). L corresponds to the observations.
In multiple bibliographies on internet they don't divide by 2.
Just in case, here is the neuralnet package reference:
https://www.rdocumentation.org/packages/neuralnet/versions/1.44.2/topics/neuralnet
Thanks!