Initializing help system before first use

PREDUPROW

Description
Presolve: Determines the type of duplicate rows to look for and eliminate when presolving a problem.
Type
Integer
Values
-1 
Automatically determined.
0 
Do not eliminate duplicate rows.
1 
Eliminate only rows that are identical in all variables.
2 
Same as option 1 plus eliminate duplicate rows with simple penalty variable expressions. (MIP only).
3 
Same as option 2 plus eliminate duplicate rows with more complex penalty variable expressions. (MIP only).
Default value
-1
Note
Duplicate rows can also be disabled by clearing the corresponding bit of the PRESOLVEOPS integer control.
Affects routines
XPRSmipoptimize ( MIPOPTIMIZE), XPRSlpoptimize ( LPOPTIMIZE).
See also
PRESOLVE, PRESOLVEOPS.

Parent Topic Control Parameters

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