QPLIB

A Library of Quadratic Programming Instances

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QPLIB_0752

Formats	gms lp mod qplib
Problem type ^probtype	QBL
Solution point objective value ^solobjvalue	24071.00000000 (gdx, sol)
Solution point infeasibility ^{solinfeasibility}	0.0000e+00
Donor ^donor	Nick Sahinidis
#Variables ^nvars	250
#Binary Variables ^nbinvars	250
#Integer Variables ^nintvars	0
#Bounded non-binary Variables ^nboundedvars	0
#Variables with only one bound ^{nsingleboundedvars}	0
#Nonlinear Variables ^nnlvars	250
#Nonlinear Binary Variables ^nnlbinvars	250
#Nonlinear Integer Variables ^nnlintvars	0
Objective Sense ^objsense	max
Objective type ^objtype	quadratic
Objective curvature ^objcurvature	indefinite
#Negative eigenvalues in objective matrix ^{nobjquadnegev}	125
#Positive eigenvalues in objective matrix ^{nobjquadposev}	125
#Nonzeros in Objective ^nobjnz	250
#Nonlinear Nonzeros in Objective ^nobjnlnz	250
#Quadratic Terms in Objective ^nobjquadnz	3134
#Square Terms in Objective ^{nobjquaddiagnz}	20
#Constraints ^ncons	1
#Linear Constraints ^nlincons	1
#Quadratic Constraints ^nquadcons	0
#Diagonal Quadratic Constraints ^{ndiagquadcons}	0
Constraints curvature ^{conscurvature}	linear
#Convex Nonlinear Constraints ^{nconvexnlcons}	0
#Concave Nonlinear Constraints ^{nconcavenlcons}	0
#Indefinite Nonlinear Constraints ^{nindefinitenlcons}	0
#Nonzeros in Jacobian ^njacobiannz	250
#Nonlinear Nonzeros in Jacobian ^{njacobiannlnz}	0
#Nonzeros in (Upper-Left) Hessian of Lagrangian ^{nlaghessiannz}	6248
#Nonzeros in Diagonal of Hessian of Lagrangian ^{nlaghessiandiagnz}	20
#Blocks in Hessian of Lagrangian ^{nlaghessianblocks}	1
Minimal blocksize in Hessian of Lagrangian ^{laghessianminblocksize}	250
Maximal blocksize in Hessian of Lagrangian ^{laghessianmaxblocksize}	250
Average blocksize in Hessian of Lagrangian ^{laghessianavgblocksize}	250.0
Sparsity Jacobian
Sparsity Lag. Hessian