QPLIB

A Library of Quadratic Programming Instances

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QPLIB_2546

Formats	gms lp mod qplib
Problem type ^probtype	CCQ
Solution point objective value ^solobjvalue	-8668213.40900000 (gdx, sol)
Solution point infeasibility ^{solinfeasibility}	3.6380e-12
Donor ^donor	Ruth Misener
#Variables ^nvars	1015
#Binary Variables ^nbinvars	0
#Integer Variables ^nintvars	0
#Bounded non-binary Variables ^nboundedvars	0
#Variables with only one bound ^{nsingleboundedvars}	15
#Nonlinear Variables ^nnlvars	839
#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}	168
#Nonzeros in Objective ^nobjnz	424
#Nonlinear Nonzeros in Objective ^nobjnlnz	424
#Quadratic Terms in Objective ^nobjquadnz	808
#Square Terms in Objective ^{nobjquaddiagnz}	424
#Constraints ^ncons	992
#Linear Constraints ^nlincons	592
#Quadratic Constraints ^nquadcons	400
#Diagonal Quadratic Constraints ^{ndiagquadcons}	0
Constraints curvature ^{conscurvature}	indefinite
#Convex Nonlinear Constraints ^{nconvexnlcons}	0
#Concave Nonlinear Constraints ^{nconcavenlcons}	0
#Indefinite Nonlinear Constraints ^{nindefinitenlcons}	400
#Nonzeros in Jacobian ^njacobiannz	5018
#Nonlinear Nonzeros in Jacobian ^{njacobiannlnz}	1850
#Nonzeros in (Upper-Left) Hessian of Lagrangian ^{nlaghessiannz}	2692
#Nonzeros in Diagonal of Hessian of Lagrangian ^{nlaghessiandiagnz}	424
#Blocks in Hessian of Lagrangian ^{nlaghessianblocks}	176
Minimal blocksize in Hessian of Lagrangian ^{laghessianminblocksize}	1
Maximal blocksize in Hessian of Lagrangian ^{laghessianmaxblocksize}	52
Average blocksize in Hessian of Lagrangian ^{laghessianavgblocksize}	4.767045
Sparsity Jacobian
Sparsity Lag. Hessian