QPLIB

A Library of Quadratic Programming Instances

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QPLIB_2696

Formats	gms lp mod qplib
Problem type ^probtype	QCQ
Solution point objective value ^solobjvalue	-38011.57283000 (gdx, sol)
Solution point infeasibility ^{solinfeasibility}	1.4211e-14
Donor ^donor	Ruth Misener
#Variables ^nvars	3500
#Binary Variables ^nbinvars	0
#Integer Variables ^nintvars	0
#Bounded non-binary Variables ^nboundedvars	0
#Variables with only one bound ^{nsingleboundedvars}	5
#Nonlinear Variables ^nnlvars	1065
#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}	50
#Positive eigenvalues in objective matrix ^{nobjquadposev}	100
#Nonzeros in Objective ^nobjnz	160
#Nonlinear Nonzeros in Objective ^nobjnlnz	160
#Quadratic Terms in Objective ^nobjquadnz	400
#Square Terms in Objective ^{nobjquaddiagnz}	160
#Constraints ^ncons	3495
#Linear Constraints ^nlincons	1995
#Quadratic Constraints ^nquadcons	1500
#Diagonal Quadratic Constraints ^{ndiagquadcons}	0
Constraints curvature ^{conscurvature}	indefinite
#Convex Nonlinear Constraints ^{nconvexnlcons}	0
#Concave Nonlinear Constraints ^{nconcavenlcons}	0
#Indefinite Nonlinear Constraints ^{nindefinitenlcons}	1500
#Nonzeros in Jacobian ^njacobiannz	19855
#Nonlinear Nonzeros in Jacobian ^{njacobiannlnz}	5400
#Nonzeros in (Upper-Left) Hessian of Lagrangian ^{nlaghessiannz}	3640
#Nonzeros in Diagonal of Hessian of Lagrangian ^{nlaghessiandiagnz}	160
#Blocks in Hessian of Lagrangian ^{nlaghessianblocks}	43
Minimal blocksize in Hessian of Lagrangian ^{laghessianminblocksize}	4
Maximal blocksize in Hessian of Lagrangian ^{laghessianmaxblocksize}	302
Average blocksize in Hessian of Lagrangian ^{laghessianavgblocksize}	24.767442
Sparsity Jacobian
Sparsity Lag. Hessian