XSLPloaddfs
XSLPloaddfs |
int XSLP_CC XSLPloaddfs(XSLPprob Prob, int nDF, const int *ColIndex, const int *RowIndex, const double *Value)
|
Prob
|
The current SLP problem.
|
|
nDF
|
The number of distribution factors.
|
|
ColIndex
|
Array of indices of columns whose distribution factor is to be changed.
|
|
RowIndex
|
Array of indices of the rows where each distribution factor applies.
|
|
Value
|
Array of double precision variables holding the new values of the distribution factors.
|
column 282 in row 134 = 0.1
column 282 in row 136 = 0.15
column 285 in row 133 = 1.0.
Any other first-order derivative placeholders are set to XSLP_DELTA_Z.
int ColIndex[3], RowIndex[3]; double Value[3]; ColIndex[0] = 282; RowIndex[0] = 134; Value[0] = 0.1; ColIndex[1] = 282; RowIndex[1] = 136; Value[1] = 0.15; ColIndex[2] = 285; RowIndex[2] = 133; Value[2] = 1.0; XSLPloaddfs(prob,3,ColIndex,RowIndex,Value);
The distribution factor of a column in a row is the matrix coefficient of the corresponding delta vector in the row. Distribution factors are used in conventional recursion models, and are essentially normalized first-order derivatives. Xpress-SLP can accept distribution factors instead of initial values, provided that the values of the variables involved can all be calculated after optimization using determining rows, or by a callback.
The XSLPadd... functions load additional items into the SLP problem. The corresponding XSLPload... functions delete any existing items first.
© 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.