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Questions - ojalgo

What's the most efficient way to create a diagonal matrix with ojalgo?

Is there something like Primitive64Matrix.FACTORY.makeDiagonal(double...)? I couldn't find anything like that in https://www.ojalgo.org/code-examples/ I was hoping not to do Primitive64Matrix.FACTORY....
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mchen

java

linear-algebra

ojalgo

Votes: 0

Answers: 1

Latest Answer

No, not directly like that. You can either create a sparse matrix and then just set the diagonal: SparseReceiver sparseReceiver = Primitive64Matrix.FACTORY.makeSparse(3, 3); sparseReceiver.fi...
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apete

How do one solve linear programming problems with ojAlgo?

I am trying to learn how to solve a linear programming problem and I want to use ojAlgo LinearSolver. I solve the equality constraints using a SolverTask and get a single feasible point. Nice! Then I...
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Magnus

java

linear-programming

ojalgo

inequalities

Votes: 0

Answers: 1

Latest Answer

1/2) You typically don't use an LP solver to solve full rank equation systems. There should be many possible solutions, and you want to find the best one. Those would be the slack variables from the ...
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apete

How to encourage a balanced solution in ojAlgo ExpressionBasedModel

I have the following model: ExpressionsBasedModel model = new ExpressionsBasedModel(); Variable va = model.addVariable("va") .lower(0); Variable vb ...
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elcheapogary

linear-programming

ojalgo

Votes: 0

Answers: 1

Latest Answer

For future readers, I was able to do this by first converting the values represented by ei and ek into new variables, with the existing expressions ei and ek constraining the value of the new variable...
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elcheapogary

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