picos.modeling.strategy¶

Optimization problem solution strategy search.

Outline¶

Optimization problem solution strategy.

No solution strategy found.

class picos.modeling.strategy.Strategy(problem, solver, *reforms)[source]¶

Optimization problem solution strategy.

__init__(problem, solver, *reforms)[source]¶

Construct a Strategy.

Parameters

problem (Problem) – The first step in the solution pipeline; the problem to be solved.
solver (type) – The last step in the solution pipeline; the solver class to be used.
reforms (list(Reformulation)) – Intermediate steps in the pipeline; reformulations to be applied. May not include ExtraOptions which is automatically made the first reformulation.

execute(**extra_options)[source]¶

Execute the solution strategy.

Parameters: extra_options – A keyword parameter sequence of additional options (in addition to those of the problem) to use for this search.
Returns: Solution to the problem.

classmethod from_problem(problem, **extra_options)[source]¶

Create a solution strategy for the given problem.

Parameters

problem (Problem) – The optimization problem to search a strategy for.
extra_options – A keyword parameter sequence of additional options (in addition to those of the problem) to assume used.

valid(**extra_options)[source]¶

Whether the solution strategy can be executed.

Parameters: extra_options – A keyword parameter sequence of additional options (in addition to those of the problem) to assume used.

property reforms¶

All reformulations in use.

This includes the implicit ExtraOptions.

exception picos.modeling.strategy.NoStrategyFound[source]¶

No solution strategy found.

Raised when no viable combination of reformulations and solver to tackle the problem could be found.

__init__(*args, **kwargs)¶: Initialize self. See help(type(self)) for accurate signature.

__new__(**kwargs)¶: Create and return a new object. See help(type) for accurate signature.