Entr-class function

The Entr class.

This class represents the elementwise operation $-xlog(x)$. class

Entr(x)

## S4 method for signature 'Entr'
to_numeric(object, values)

## S4 method for signature 'Entr'
sign_from_args(object)

## S4 method for signature 'Entr'
is_atom_convex(object)

## S4 method for signature 'Entr'
is_atom_concave(object)

## S4 method for signature 'Entr'
is_incr(object, idx)

## S4 method for signature 'Entr'
is_decr(object, idx)

## S4 method for signature 'Entr'
.grad(object, values)

## S4 method for signature 'Entr'
.domain(object)

Arguments

• x: An Expression or numeric constant.
• object: An Entr object.
• values: A list of numeric values for the arguments
• idx: An index into the atom.

Methods (by generic)

• to_numeric(Entr): The elementwise entropy function evaluated at the value.
• sign_from_args(Entr): The sign of the atom is unknown.
• is_atom_convex(Entr): The atom is not convex.
• is_atom_concave(Entr): The atom is concave.
• is_incr(Entr): The atom is weakly increasing.
• is_decr(Entr): The atom is weakly decreasing.
• .grad(Entr): Gives the (sub/super)gradient of the atom w.r.t. each variable
• .domain(Entr): Returns constraints descrbing the domain of the node

Slots

• x: An Expression or numeric constant.