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A Library of Quadratic Programming Instances

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QPLIB_1913

Formats gms lp mod qplib
Problem type probtype QCQ
Solution point objective value solobjvalue -52.10848130 (gdx, sol)
Solution point infeasibility solinfeasibility 3.5527e-15
Donor donor Nick Sahinidis
#Variables nvars 48
#Binary Variables nbinvars 0
#Integer Variables nintvars 0
#Bounded non-binary Variables nboundedvars 48
#Variables with only one bound nsingleboundedvars 0
#Nonlinear Variables nnlvars 48
#Nonlinear Binary Variables nnlbinvars 0
#Nonlinear Integer Variables nnlintvars 0
Objective Sense objsense min
Objective type objtype quadratic
Objective curvature objcurvature indefinite
#Negative eigenvalues in objective matrix nobjquadnegev 24
#Positive eigenvalues in objective matrix nobjquadposev 24
#Nonzeros in Objective nobjnz 48
#Nonlinear Nonzeros in Objective nobjnlnz 48
#Quadratic Terms in Objective nobjquadnz 287
#Square Terms in Objective nobjquaddiagnz 0
#Constraints ncons 48
#Linear Constraints nlincons 0
#Quadratic Constraints nquadcons 48
#Diagonal Quadratic Constraints ndiagquadcons 0
Constraints curvature conscurvature indefinite
#Convex Nonlinear Constraints nconvexnlcons 0
#Concave Nonlinear Constraints nconcavenlcons 0
#Indefinite Nonlinear Constraints nindefinitenlcons 48
#Nonzeros in Jacobian njacobiannz 2304
#Nonlinear Nonzeros in Jacobian njacobiannlnz 2304
#Nonzeros in (Upper-Left) Hessian of Lagrangian nlaghessiannz 1152
#Nonzeros in Diagonal of Hessian of Lagrangian nlaghessiandiagnz 0
#Blocks in Hessian of Lagrangian nlaghessianblocks 1
Minimal blocksize in Hessian of Lagrangian laghessianminblocksize 48
Maximal blocksize in Hessian of Lagrangian laghessianmaxblocksize 48
Average blocksize in Hessian of Lagrangian laghessianavgblocksize 48.0
Sparsity Jacobian
Sparsity Lag. Hessian




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