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A Library of Quadratic Programming Instances

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QPLIB_8553

Formats	gms lp mod qplib
Problem type ^probtype	QCQ
Solution point objective value ^solobjvalue	1.31199669 (gdx, sol)
Solution point infeasibility ^{solinfeasibility}	3.0846e-12
Donor ^donor	Nick Gould
#Variables ^nvars	79998
#Binary Variables ^nbinvars	0
#Integer Variables ^nintvars	0
#Bounded non-binary Variables ^nboundedvars	79202
#Variables with only one bound ^{nsingleboundedvars}	0
#Nonlinear Variables ^nnlvars	79202
#Nonlinear Binary Variables ^nnlbinvars	0
#Nonlinear Integer Variables ^nnlintvars	0
Objective Sense ^objsense	min
Objective type ^objtype	quadratic
Objective curvature ^objcurvature	nonconcave
#Negative eigenvalues in objective matrix ^{nobjquadnegev}	-1
#Positive eigenvalues in objective matrix ^{nobjquadposev}	-1
#Nonzeros in Objective ^nobjnz	79202
#Nonlinear Nonzeros in Objective ^nobjnlnz	79202
#Quadratic Terms in Objective ^nobjquadnz	79202
#Square Terms in Objective ^{nobjquaddiagnz}	39601
#Constraints ^ncons	40397
#Linear Constraints ^nlincons	796
#Quadratic Constraints ^nquadcons	39601
#Diagonal Quadratic Constraints ^{ndiagquadcons}	0
Constraints curvature ^{conscurvature}	indefinite
#Convex Nonlinear Constraints ^{nconvexnlcons}	0
#Concave Nonlinear Constraints ^{nconcavenlcons}	0
#Indefinite Nonlinear Constraints ^{nindefinitenlcons}	39601
#Nonzeros in Jacobian ^njacobiannz	239396
#Nonlinear Nonzeros in Jacobian ^{njacobiannlnz}	79202
#Nonzeros in (Upper-Left) Hessian of Lagrangian ^{nlaghessiannz}	158404
#Nonzeros in Diagonal of Hessian of Lagrangian ^{nlaghessiandiagnz}	79202
#Blocks in Hessian of Lagrangian ^{nlaghessianblocks}	39601
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