QPLIB

A Library of Quadratic Programming Instances

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QPLIB_3525

Formats	gms lp mod qplib
Problem type ^probtype	QGQ
Solution point objective value ^solobjvalue	4028.33988200 (gdx, sol)
Solution point infeasibility ^{solinfeasibility}	6.2172e-14
Donor ^donor	Stefan Vigerske
#Variables ^nvars	1749
#Binary Variables ^nbinvars	0
#Integer Variables ^nintvars	1662
#Bounded non-binary Variables ^nboundedvars	1662
#Variables with only one bound ^{nsingleboundedvars}	0
#Nonlinear Variables ^nnlvars	1662
#Nonlinear Binary Variables ^nnlbinvars	0
#Nonlinear Integer Variables ^nnlintvars	1662
Objective Sense ^objsense	min
Objective type ^objtype	quadratic
Objective curvature ^objcurvature	indefinite
#Negative eigenvalues in objective matrix ^{nobjquadnegev}	831
#Positive eigenvalues in objective matrix ^{nobjquadposev}	831
#Nonzeros in Objective ^nobjnz	1662
#Nonlinear Nonzeros in Objective ^nobjnlnz	1662
#Quadratic Terms in Objective ^nobjquadnz	831
#Square Terms in Objective ^{nobjquaddiagnz}	0
#Constraints ^ncons	91
#Linear Constraints ^nlincons	52
#Quadratic Constraints ^nquadcons	39
#Diagonal Quadratic Constraints ^{ndiagquadcons}	0
Constraints curvature ^{conscurvature}	indefinite
#Convex Nonlinear Constraints ^{nconvexnlcons}	0
#Concave Nonlinear Constraints ^{nconcavenlcons}	0
#Indefinite Nonlinear Constraints ^{nindefinitenlcons}	39
#Nonzeros in Jacobian ^njacobiannz	11765
#Nonlinear Nonzeros in Jacobian ^{njacobiannlnz}	7160
#Nonzeros in (Upper-Left) Hessian of Lagrangian ^{nlaghessiannz}	1662
#Nonzeros in Diagonal of Hessian of Lagrangian ^{nlaghessiandiagnz}	0
#Blocks in Hessian of Lagrangian ^{nlaghessianblocks}	831
Minimal blocksize in Hessian of Lagrangian ^{laghessianminblocksize}	2
Maximal blocksize in Hessian of Lagrangian ^{laghessianmaxblocksize}	2
Average blocksize in Hessian of Lagrangian ^{laghessianavgblocksize}	2.0
Sparsity Jacobian
Sparsity Lag. Hessian