Initializing help system before first use

# problem.getCallbackRedCosts

Purpose
Obtains the reduced costs from the solution associated with the current callback.
Synopsis
`djs = problem.getCallbackRedCosts(*variables)`
Argument

variables | (optional) variable objects whose reduced costs will be returned. If none is provided, a list of reduced costs for all variables in the problem will be returned.

Return value

djs | A list of reduced costs if *variables contains more than one variable object or is not provided, a single reduced cost otherwise.

Further information
See problem.getCallbackSolution for a list of callbacks where this function can be called. Note that reduced costs are not available in all contexts where a primal solution is available.
Related topics
problem.getCallbackSolution, problem.getCallbackSlacks, problem.getCallbackDuals, problem.getRedCosts, var.getCallbackRedCost, var.getRedCost.
Parent Topic Methods of the class problem

© 2001-2026 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.