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I am running a lp optimization using lpSolve package. The $solution value show me only one result, but I know there are more than one optimal solution. How can I collect the others solutions?

humbertosrlima
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  • might be relevant: https://stackoverflow.com/questions/28666795/r-lpsolve-binary-find-all-possible-solutions – chinsoon12 Feb 12 '20 at 01:08
  • Thank you for the answer. But, unfortunately, the results aren't binary. They are integer. – humbertosrlima Feb 14 '20 at 19:09
  • Use all.bin=TRUE – chinsoon12 Feb 14 '20 at 20:33
  • You can add a cut to forbid the current integer solution and resolve. However, the general integer cut is not that simple. Many modern solvers have something called a **solution pool**. They can give a set of alternative optimal integer solutions. LpSolve does not have this facility. – Erwin Kalvelagen Feb 15 '20 at 20:52

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