Neighborhood

Neighborhood objets are Addons defining what a neighborhood is for a Variables via Variable Addon, or a Search space via Search space Addon.

from zellij.core import *
from zellij.core import MockModel
from zellij.utils.converters import *

lf = Loss()(MockModel())
sp = MixedSearchspace(ArrayVar(
                        IntVar("a",-5,5, neighborhood=IntMinmax(2)),
                        FloatVar("b",-5,5, neighborhood=FloatInterval(1.5)),
                        CatVar("b",['f1','f2','f3'], neighborhood=CatInterval()),
                        neighborhood=ArrayInterval()),
                        lf,
                        neighborhood=Intervals())
point = sp.random_point(1)
print(point)
neighbors = sp.to_continuous.convert([[-5,-5],[0,0],point,[5,5]])
print(float_points)
int_points = sp.to_continuous.reverse(float_points)
print(int_points)

Intervals

Intervals Neighborhood are based on drawing a random value between $x \pm neighborhood$ .

class Intervals(search_space=None, neighborhood=None)[source]

Bases: zellij.core.addons.Neighborhood

Search space Addon, used to determine the neighbor of a given point. All Variables of the Search space must have the neighbor addon implemented.

Parameters

variable (Search space, default=None) – Targeted Search space.
neighborhood (list, default=None) – If a list of the shape of the values from the Search space. Modify the neighborhood attribute of all Variable Addon of type VarNeighborhood, for each Variables.

neighborhood

property neighborhood

property target

class ArrayInterval(variable=None, neighborhood=None)[source]

Bases: zellij.core.addons.VarNeighborhood

Search space Addon, used to determine the neighbor of an ArrayVar. neighbor kwarg must be implemented for all Variables of the ArrayVar.

Parameters

variable (ArrayVar, default=None) – Targeted Variables.
neighborhood (list, default=None) – Not yet implemented

neighborhood

property neighborhood

property target

class FloatInterval(neighborhood, variable=None)[source]

Bases: zellij.core.addons.VarNeighborhood

Variable Addon, used to determine the neighbor of a FloatVar. Draw a random point in $x \pm neighborhood$ .

Parameters

variable (FloatVar, default=None) – Targeted Variables.
neighborhood (float, default=None) – $x \pm neighborhood$

neighborhood

property neighborhood

property target

class IntInterval(neighborhood, variable=None)[source]

Bases: zellij.core.addons.VarNeighborhood

Variable Addon, used to determine the neighbor of an IntVar. Draw a random point in $x \pm neighborhood$ .

Parameters

variable (IntVar, default=None) – Targeted Variables.
neighborhood (int, default=None) – $x \pm neighborhood$

neighborhood

property neighborhood

property target

class CatInterval(variable=None, neighborhood=None)[source]

Bases: zellij.core.addons.VarNeighborhood

Variable Addon, used to determine the neighbor of a CatVar. Draw a random feature in CatVar.

Parameters

variable (FlaotVar, default=None) – Targeted Variables.
neighborhood (int, default=None) – Undefined, for CatVar it draws a random feature.

neighborhood

property neighborhood

property target

class ConstantInterval(variable=None, neighborhood=None)[source]

Bases: zellij.core.addons.VarNeighborhood

Variable Addon, used to determine the neighbor of a Constant. Do nothing. Return the constant.

Parameters

variable (Constant, default=None) – Targeted Variables.
neighborhood (int, default=None) – Not implemented.

neighborhood

property neighborhood

property target

Neighborhood

Contents

Neighborhood

Intervals