QPLIB

A Library of Quadratic Programming Instances

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QPLIB_3814

Formats	gms lp mod qplib
Problem type ^probtype	QMQ
Solution point objective value ^solobjvalue	0.62596747 (gdx, sol)
Solution point infeasibility ^{solinfeasibility}	1.8921e-08
Donor ^donor	Stefan Vigerske
#Variables ^nvars	48
#Binary Variables ^nbinvars	2
#Integer Variables ^nintvars	0
#Bounded non-binary Variables ^nboundedvars	40
#Variables with only one bound ^{nsingleboundedvars}	0
#Nonlinear Variables ^nnlvars	40
#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}	2
#Positive eigenvalues in objective matrix ^{nobjquadposev}	2
#Nonzeros in Objective ^nobjnz	12
#Nonlinear Nonzeros in Objective ^nobjnlnz	10
#Quadratic Terms in Objective ^nobjquadnz	8
#Square Terms in Objective ^{nobjquaddiagnz}	0
#Constraints ^ncons	41
#Linear Constraints ^nlincons	13
#Quadratic Constraints ^nquadcons	28
#Diagonal Quadratic Constraints ^{ndiagquadcons}	0
Constraints curvature ^{conscurvature}	indefinite
#Convex Nonlinear Constraints ^{nconvexnlcons}	0
#Concave Nonlinear Constraints ^{nconcavenlcons}	0
#Indefinite Nonlinear Constraints ^{nindefinitenlcons}	28
#Nonzeros in Jacobian ^njacobiannz	168
#Nonlinear Nonzeros in Jacobian ^{njacobiannlnz}	100
#Nonzeros in (Upper-Left) Hessian of Lagrangian ^{nlaghessiannz}	100
#Nonzeros in Diagonal of Hessian of Lagrangian ^{nlaghessiandiagnz}	0
#Blocks in Hessian of Lagrangian ^{nlaghessianblocks}	6
Minimal blocksize in Hessian of Lagrangian ^{laghessianminblocksize}	5
Maximal blocksize in Hessian of Lagrangian ^{laghessianmaxblocksize}	8
Average blocksize in Hessian of Lagrangian ^{laghessianavgblocksize}	6.666667
Sparsity Jacobian
Sparsity Lag. Hessian