better mse

This commit is contained in:
Mike J Innes 2017-08-24 11:40:51 +01:00
parent 23690e0083
commit 9ce0439943

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@ -1,6 +1,6 @@
# Cost functions
mse(, y) = sum(( .- y).^2)/2
mse(, y) = sum(( .- y).^2)/length(y)
# back!(::typeof(mse), Δ, ŷ, y) = Δ .* (ŷ .- y)
logloss(, y) = -sum(y .* log.())