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A Library of Quadratic Programming Instances

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QPLIB_4270

Formats gms lp mod qplib
Problem type probtype CML
Solution point objective value solobjvalue 99.48264828 (gdx, sol)
Solution point infeasibility solinfeasibility 2.2204e-16
Donor donor Antonio Frangioni
#Variables nvars 1600
#Binary Variables nbinvars 400
#Integer Variables nintvars 0
#Bounded non-binary Variables nboundedvars 0
#Variables with only one bound nsingleboundedvars 800
#Nonlinear Variables nnlvars 800
#Nonlinear Binary Variables nnlbinvars 0
#Nonlinear Integer Variables nnlintvars 0
Objective Sense objsense min
Objective type objtype quadratic
Objective curvature objcurvature convex
#Negative eigenvalues in objective matrix nobjquadnegev  
#Positive eigenvalues in objective matrix nobjquadposev 800
#Nonzeros in Objective nobjnz 1600
#Nonlinear Nonzeros in Objective nobjnlnz 800
#Quadratic Terms in Objective nobjquadnz 80600
#Square Terms in Objective nobjquaddiagnz 800
#Constraints ncons 1603
#Linear Constraints nlincons 1603
#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 4800
#Nonlinear Nonzeros in Jacobian njacobiannlnz 0
#Nonzeros in (Upper-Left) Hessian of Lagrangian nlaghessiannz 160400
#Nonzeros in Diagonal of Hessian of Lagrangian nlaghessiandiagnz 800
#Blocks in Hessian of Lagrangian nlaghessianblocks 401
Minimal blocksize in Hessian of Lagrangian laghessianminblocksize 1
Maximal blocksize in Hessian of Lagrangian laghessianmaxblocksize 400
Average blocksize in Hessian of Lagrangian laghessianavgblocksize 1.995012
Sparsity Jacobian
Sparsity Lag. Hessian




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