QPLIB

A Library of Quadratic Programming Instances

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QPLIB_0031

Formats gms lp mod qplib
Problem type probtype QML
Solution point objective value solobjvalue 15.38637379 (gdx, sol)
Solution point infeasibility solinfeasibility 0.0000e+00
Donor donor Andrea Scozzari
#Variables nvars 60
#Binary Variables nbinvars 30
#Integer Variables nintvars 0
#Bounded non-binary Variables nboundedvars 0
#Variables with only one bound nsingleboundedvars 30
#Nonlinear Variables nnlvars 30
#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 11
#Positive eigenvalues in objective matrix nobjquadposev 19
#Nonzeros in Objective nobjnz 30
#Nonlinear Nonzeros in Objective nobjnlnz 30
#Quadratic Terms in Objective nobjquadnz 464
#Square Terms in Objective nobjquaddiagnz 30
#Constraints ncons 32
#Linear Constraints nlincons 32
#Quadratic Constraints nquadcons 0
#Diagonal Quadratic Constraints ndiagquadcons 0
Constraints curvature conscurvature linear
#Convex Nonlinear Constraints nconvexnlcons 0
#Concave Nonlinear Constraints nconcavenlcons 0
#Indefinite Nonlinear Constraints nindefinitenlcons 0
#Nonzeros in Jacobian njacobiannz 120
#Nonlinear Nonzeros in Jacobian njacobiannlnz 0
#Nonzeros in (Upper-Left) Hessian of Lagrangian nlaghessiannz 898
#Nonzeros in Diagonal of Hessian of Lagrangian nlaghessiandiagnz 30
#Blocks in Hessian of Lagrangian nlaghessianblocks 1
Minimal blocksize in Hessian of Lagrangian laghessianminblocksize 30
Maximal blocksize in Hessian of Lagrangian laghessianmaxblocksize 30
Average blocksize in Hessian of Lagrangian laghessianavgblocksize 30.0
Sparsity Jacobian
Sparsity Lag. Hessian




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