Limitation

This module defines the resource limits that are used by the Algorithm during the optimization process.

class Limitation:
    def exhausted() -> bool:
    def left(key: str) -> Optional[Numeral]
    def set(key: str, value: Numeral) -> Numeral
    def get(key: str, default: Numeral) -> Numeral
    def increase(key: str, value: Numeral) -> Numeral

The exhausted method checks if the selected resource has been exhausted and returns a boolean result.

The left method returns the remaining limit for the key resource.

The set method updates the key resource with the given value and returns the updated value.

The get method returns the current value for the key resource. If the key resource is missing, then returns the default value.

The increase method adds value to the current value of the key resource and returns the updated value.

WallTime

This implementation uses execution time as the selected resource. The execution time is limited by the from_string parameter in the ‘<hours>:<minutes>:<seconds>’ format.

from core.module.limitation import WallTime

limitation = WallTime(
    from_string: str
)

Iteration

This implementation uses iterations as the selected resource. The number of iterations is limited using the value parameter.

from core.module.limitation import Iteration

limitation = Iteration(
    value: int
)

Other core modules

• Space

• Sampling

• Comparator