XPRSgetqobj
XPRSgetqobj |
Purpose
Returns a single
quadratic objective function coefficient corresponding to the variable pair
(icol, jcol) of the
Hessian matrix.
Synopsis
int XPRS_CC XPRSgetqobj(XPRSprob prob, int icol, int jcol, double *dval);
Arguments
|
prob
|
The current problem.
|
|
icol
|
Column index for the first variable in the quadratic term.
|
|
jcol
|
Column index for the second variable in the quadratic term.
|
|
dval
|
Pointer to a double value where the objective function coefficient is to be placed.
|
Example
The following returns the coefficient of the x
0
2 term in the objective function, placing it in the variable
value :
double value; ... XPRSgetqobj(prob,0,0,&value);
Further information
dval is the coefficient in the quadratic Hessian matrix. For example, if the objective function has the term [3x
1x
2 + 3x
2x
1]/2 the value retrieved by
XPRSgetqobj is
3 and if the objective function has the term [6x
1
2]/2 the value retrieved by
XPRSgetqobj is
6.
Related topics
© 2001-2019 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.