ortools.constraint_solver.pywrapcp.LocalSearchOperator Class Reference

Detailed Description

The base class for all local search operators.

A local search operator is an object that defines the neighborhood of a
solution. In other words, a neighborhood is the set of solutions which can
be reached from a given solution using an operator.

The behavior of the LocalSearchOperator class is similar to iterators.
The operator is synchronized with an assignment (gives the
current values of the variables); this is done in the Start() method.

Then one can iterate over the neighbors using the MakeNextNeighbor method.
This method returns an assignment which represents the incremental changes
to the current solution. It also returns a second assignment representing
the changes to the last solution defined by the neighborhood operator; this
assignment is empty if the neighborhood operator cannot track this
information.

Definition at line 4211 of file pywrapcp.py.

Inheritance diagram for ortools.constraint_solver.pywrapcp.LocalSearchOperator:

Public Member Functions
	__init__ (self, *args, **kwargs)
	NextNeighbor (self, delta, deltadelta)
	Start (self, assignment)
	__disown__ (self)
Public Member Functions inherited from ortools.constraint_solver.pywrapcp.BaseObject
	__init__ (self)
	DebugString (self)
	__str__ (self)
	__repr__ (self)
	__disown__ (self)

Properties
	thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
Properties inherited from ortools.constraint_solver.pywrapcp.BaseObject
	thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")

Constructor & Destructor Documentation

__init__()

ortools.constraint_solver.pywrapcp.LocalSearchOperator.__init__	(		self,
		*	args,
		**	kwargs )

Definition at line 4233 of file pywrapcp.py.

Member Function Documentation

__disown__()

ortools.constraint_solver.pywrapcp.LocalSearchOperator.__disown__

(

self

)

Definition at line 4242 of file pywrapcp.py.

NextNeighbor()

ortools.constraint_solver.pywrapcp.LocalSearchOperator.NextNeighbor	(		self,
			delta,
			deltadelta )

Reimplemented in ortools.constraint_solver.pywrapcp.IntVarLocalSearchOperator.

Definition at line 4237 of file pywrapcp.py.

Start()

ortools.constraint_solver.pywrapcp.LocalSearchOperator.Start	(		self,
			assignment )

Reimplemented in ortools.constraint_solver.pywrapcp.IntVarLocalSearchOperator.

Definition at line 4240 of file pywrapcp.py.

Property Documentation

thisown

ortools.constraint_solver.pywrapcp.LocalSearchOperator.thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")

static

Definition at line 4231 of file pywrapcp.py.

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

• build/python/ortools/constraint_solver/pywrapcp.py