getdual getdualatnode

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getdual, getdualatnode, getdualinscen

Purpose

To obtain dual of current stochastic problem after optimization.

Synopsis

getdual(c: splinctr): real

getdualatnode(c: splinctr, n: integer): real

getdualinscen(c: splinctr, s: integer): real

Arguments

c

stochastic linear constraint

n

node number belonging to {1..N_t}, where c belongs to stage t, and N_t is number of nodes in stage t

s

scenario number belonging to {1..S}, where S is number of scenarios

Return value

dual

Further information

1. This procedure should be called after optimization.

2. c cannot be a hidden contraint, and it must participate in current optimization problem.

3. If c belongs to first stage then dual can be obtained by calling getdual.

4. For Expected Value problem, dual can be obtained by calling getdual.

5. For an instance of the problem in a scenario or at a node in a scenario tree, dual can be obtained by calling getdual.

6. For a node based problem, dual can be obtained by calling getdualatnode.

7. For a scenario based problem, dual can be obtained by calling getdualinscen.

Related topics

getobjval, spgetobjconst, speval, minimize, minimize, getrcost, getrcostatnode, getrcostinscen, getsol, getsolatnode, getsolinscen, getslack, getslackatnode, getslackinscen

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c	stochastic linear constraint
n	node number belonging to {1..N_t}, where c belongs to stage t, and N_t is number of nodes in stage t
s	scenario number belonging to {1..S}, where S is number of scenarios