[Coin-lpsolver] Questions about CBC settings

[John J Forrest]

The default for resolve with Clp is dual.  You can change behavior using 
Osi hints.

You can use priorities.  You can pass in an array matching the integers - 
CbcModel::passInPriorities().  Number 1 priority is highest.

John Forrest



"Vishnu Erramilli" <vishnu.erramilli at optessa.com> 
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12/18/2006 03:51 PM

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[Coin-lpsolver] Questions about CBC settings






Hi,

I have been using CBC to solve some problems. I had some doubts regarding
some settings:

1)When I use CLP as the LP solver in CBC, How do I make the LP solver use
the dual (simplex) instead of the primal?

2)Can I assign priorities to each variable and use the priorities for
branching? For e.g., instruct the algorithm to branch on variables with
highest priority first and then in decreasing order onwards.

I would be really thankful if you could answer these questions.

Thanks,

Vishnu
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