Comments (8)
Just without even looking at things: sometimes Q is defined funny - if the diagonal should be 2 instead of 1 for some reason, you'd get this
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e.g. some sort of 0.5 x^T Q x type thing
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I thought about that, but it doesn't really make sense given that gurobi is based on quadradic terms.
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http://www.gurobi.com/documentation/5.5/reference-manual/node16#routine:GRBaddqpterms
Yeah documentation suggests it isn't like that - although I swear something I've seen is.
Does Gurobi.jl do something strange?
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How does our current quadratic test not fail? Or is it actually testing for the wrong solution? (LOL)
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I wouldn't be surprised if we're testing for the wrong solution :)
I just tested the gurobi C++ interface, and it gave the right answer, so it's either Gurobi.jl or the Gurobi C interface. The binary search continues.
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See the fix. We weren't hitting it in the tests.
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Ahh, subtle!
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Related Issues (20)
- MethodError with empty summations HOT 1
- Nonlinear subexpressions HOT 4
- Should error when trying to mix `NonlinearExpression` and `GenericNonlinearExpr` HOT 1
- Support normalized_coefficient for vector-valued constraints
- Precompilation in CI fails on v1.22 HOT 7
- Fuzzy search on unrecognized keyword arguments to give suggestions HOT 2
- Track failures on nightly HOT 3
- Possibly missing diagnostics for vector of vector of variables HOT 3
- Printing of large vectorized constraints should probably cause output eliding? HOT 5
- Deleting part of containerized constraints makes whole constraint unprintable HOT 2
- function_string of Symmetric matrix includes the entire matrix HOT 7
- Inequality constraints over symmetric matrices are cumbersome HOT 9
- Set inequality syntax suggestion HOT 30
- Error when adding a constraint with a partially initialized Symmetric matrix HOT 2
- Method error in value(::Function, ::Number) HOT 4
- Diagnostic for named constraint without constraint could be improved HOT 4
- Improve Solver-independent Callbacks manual page to specifiy SCIP doesn't support lazy constraints
- Incorrect dual variable extracted from equality constraint between Hermitian matrices
- Compatibility layer with SymbolicRegression.jl HOT 19
- Explore namespace ideas HOT 5
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