Cloud Optimization V1 API - Class Google::Cloud::Optimization::V1::InjectedSolutionConstraint::ConstraintRelaxation::Relaxation (v0.8.2)

Reference documentation and code samples for the Cloud Optimization V1 API class Google::Cloud::Optimization::V1::InjectedSolutionConstraint::ConstraintRelaxation::Relaxation.

If relaxations is empty, the start time and sequence of all visits on routes are fully constrained and no new visits may be inserted or added to those routes. Also, a vehicle's start and end time in routes is fully constrained, unless the vehicle is empty (i.e., has no visits and has used_if_route_is_empty set to false in the model).

relaxations(i).level specifies the constraint relaxation level applied to a visit #j that satisfies:

  • route.visits(j).start_time >= relaxations(i).threshold_time AND
  • j + 1 >= relaxations(i).threshold_visit_count

Similarly, the vehicle start is relaxed to relaxations(i).level if it satisfies:

  • vehicle_start_time >= relaxations(i).threshold_time AND
  • relaxations(i).threshold_visit_count == 0 and the vehicle end is relaxed to relaxations(i).level if it satisfies:
  • vehicle_end_time >= relaxations(i).threshold_time AND
  • route.visits_size() + 1 >= relaxations(i).threshold_visit_count

To apply a relaxation level if a visit meets the threshold_visit_count OR the threshold_time add two relaxations with the same level: one with only threshold_visit_count set and the other with only threshold_time set. If a visit satisfies the conditions of multiple relaxations, the most relaxed level applies. As a result, from the vehicle start through the route visits in order to the vehicle end, the relaxation level becomes more relaxed: i.e., the relaxation level is non-decreasing as the route progresses.

The timing and sequence of route visits that do not satisfy the threshold conditions of any relaxations are fully constrained and no visits may be inserted into these sequences. Also, if a vehicle start or end does not satisfy the conditions of any relaxation the time is fixed, unless the vehicle is empty.

Inherits

  • Object

Extended By

  • Google::Protobuf::MessageExts::ClassMethods

Includes

  • Google::Protobuf::MessageExts

Methods

#level

def level() -> ::Google::Cloud::Optimization::V1::InjectedSolutionConstraint::ConstraintRelaxation::Relaxation::Level
Returns

#level=

def level=(value) -> ::Google::Cloud::Optimization::V1::InjectedSolutionConstraint::ConstraintRelaxation::Relaxation::Level
Parameter
Returns

#threshold_time

def threshold_time() -> ::Google::Protobuf::Timestamp
Returns

#threshold_time=

def threshold_time=(value) -> ::Google::Protobuf::Timestamp
Parameter
Returns

#threshold_visit_count

def threshold_visit_count() -> ::Integer
Returns
  • (::Integer) — The number of visits at or after which the relaxation level may be applied. If threshold_visit_count is 0 (or unset), the level may be applied directly at the vehicle start.

    If it is route.visits_size() + 1, the level may only be applied to the vehicle end. If it is more than route.visits_size() + 1, level is not applied at all for that route.

#threshold_visit_count=

def threshold_visit_count=(value) -> ::Integer
Parameter
  • value (::Integer) — The number of visits at or after which the relaxation level may be applied. If threshold_visit_count is 0 (or unset), the level may be applied directly at the vehicle start.

    If it is route.visits_size() + 1, the level may only be applied to the vehicle end. If it is more than route.visits_size() + 1, level is not applied at all for that route.

Returns
  • (::Integer) — The number of visits at or after which the relaxation level may be applied. If threshold_visit_count is 0 (or unset), the level may be applied directly at the vehicle start.

    If it is route.visits_size() + 1, the level may only be applied to the vehicle end. If it is more than route.visits_size() + 1, level is not applied at all for that route.