Is there any Java source code (or framework) to implement and solve MILP using the branch and price method?
AFAIK, jORLib is a framework to implement B&P using Java, but it does not have any clear documents or active mailing list.
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1$\begingroup$ Are you looking for a (open-source) B&P framework fully written in java, or any B&P solver with a java interface? $\endgroup$– Michael FeldmeierJun 15 '19 at 8:40
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$\begingroup$ Many frameworks for B&P written in C/C++, but in Java, there isn't any more. $\endgroup$– A.OmidiJun 16 '19 at 5:19
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I found a manual in Coin-OR Github page where they explained the implementation of the method through 3 different examples. You can find the document in this web address
answered Jun 15 '19 at 17:36
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1$\begingroup$ Thanks. I read it. It has some methods to implement. I have tried to use jORLib as a library and for the algorithmic package, it works fine, but for the B&P package, it needs to some specific libraries and features to implement that they don't have any clear documents. Do you (or someone) know how to do it? $\endgroup$– A.OmidiJun 16 '19 at 5:45
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$\begingroup$ What exactly do you mean by 'it needs some specific libraries and features to implement'? There's nothing particular needed to implement the branch-and-price. In fact, Section 3 of the aforementioned document gives a complete working example. Moreover, implementations of these working example are also included in the repository: github.com/coin-or/jorlib/tree/master/jorlib-demo $\endgroup$ Jun 18 '19 at 7:46