FICO
FICO Xpress Optimization Examples Repository
FICO Optimization Community FICO Xpress Optimization Home
Back to examples browserPrevious exampleNext example

In-memory data exchange

Description
  • ugiocb.c: Exchanging data between model and host application. Callbacks for exchanging data: sparse data, string indices (requires burglar13.mos)
  • ugiodense.c: Exchanging data between model and host application. Dense data (requires burglar6.mos)
  • ugioscalar.c: Exchanging data between model and host application. Scalars (requires burglar12.mos)
  • ugiosparse.c: Exchanging data between model and host application. Sparse data, string indices (requires burglar7.mos)


Source Files





burglar6.mos

(!******************************************************
   Mosel User Guide Example Problems
   ================================= 

   file burglar6.mos
   `````````````````
   Model as in burglar.mos, with data input/ouput
   from/to calling application.

   *** Not intended to be run standalone - run from ugiodense.c ***
   
   (c) 2008 Fair Isaac Corporation
       author: S. Heipcke, Mar. 2006
*******************************************************!)

model Burglar6
 uses "mmxprs"

 parameters
  VDATA = ''; WDATA = ''         ! Locations of input data
  SOL = ''                       ! Location for solution data output
  WTMAX = 102                    ! Maximum weight allowed
 end-parameters
  
 declarations
  ITEMS = 1..8                   ! Index range for items
  
  VALUE: array(ITEMS) of real    ! Value of items
  WEIGHT: array(ITEMS) of real   ! Weight of items
  
  take: array(ITEMS) of mpvar    ! 1 if we take item i; 0 otherwise
  soltake: array(ITEMS) of real  ! Solution values
 end-declarations

 initializations from 'raw:'
  VALUE as VDATA  WEIGHT as WDATA
 end-initializations

! Objective: maximize total value
 MaxVal:= sum(i in ITEMS) VALUE(i)*take(i) 

! Weight restriction
 sum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX

! All variables are 0/1
 forall(i in ITEMS) take(i) is_binary  

 maximize(MaxVal)                 ! Solve the MIP-problem

! Output solution to calling application
 forall(i in ITEMS) soltake(i):= getsol(take(i))

 initializations to 'raw:'
  soltake as SOL
 end-initializations

end-model

Back to examples browserPrevious exampleNext example