olb::opti::projection::Softplus< T > Struct Template Reference

#include <projection.h>

Inheritance diagram for olb::opti::projection::Softplus< T >:

Collaboration diagram for olb::opti::projection::Softplus< T >:

Public Member Functions
T	project (T x) const override
T	derivative (T x) const override
T	inverse (T x) const override

Detailed Description

template<typename T>
struct olb::opti::projection::Softplus< T >

Definition at line 95 of file projection.h.

Member Function Documentation

derivative()

template<typename T >

T olb::opti::projection::Softplus< T >::derivative ( T x ) const

inlineoverridevirtual

Implements olb::opti::projection::Base< T >.

Definition at line 98 of file projection.h.

                                   { return util::exp(x)
     / ((util::exp(x)+T(1))*(util::log(T(1)+util::exp(x))+T(1))*(util::log(T(1)+util::exp(x))+T(1))); }

References olb::util::exp(), and olb::util::log().

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inverse()

template<typename T >

T olb::opti::projection::Softplus< T >::inverse ( T x ) const

inlineoverridevirtual

Implements olb::opti::projection::Base< T >.

Definition at line 100 of file projection.h.

{ return util::log(util::exp(x/(T(1)-x))-T(1)); }

References olb::util::exp(), and olb::util::log().

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project()

template<typename T >

T olb::opti::projection::Softplus< T >::project ( T x ) const

inlineoverridevirtual

Implements olb::opti::projection::Base< T >.

Definition at line 97 of file projection.h.

{ return T(1) - T(1)/(util::log(T(1)+util::exp(x))+T(1)); }

References olb::util::exp(), and olb::util::log().

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The documentation for this struct was generated from the following file:

• src/optimization/projection.h