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R non-negative comment #91

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dwsmith1983 opened this issue Feb 11, 2021 · 1 comment

dwsmith1983 commented Feb 11, 2021

In Chapter 3, on page 55 under equation 3.57, we have

is the softplus function, that maps from R to R+, to ensure the predicted standard deviation is non-negative.

Are we talking R+ or non-negative R_{\geq 0}? R+ would be R_{> 0)

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murphyk commented Feb 20, 2021

Softplus is always >0 (except if x=-infty).

murphyk closed this as completed

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