QPLIB

A Library of Quadratic Programming Instances

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QPLIB_2181

Formats	gms lp mod qplib
Problem type ^probtype	LMQ
Solution point objective value ^solobjvalue	22.00000000 (gdx, sol)
Solution point infeasibility ^{solinfeasibility}	9.0949e-13
Donor ^donor	Polip2011
#Variables ^nvars	280
#Binary Variables ^nbinvars	90
#Integer Variables ^nintvars	0
#Bounded non-binary Variables ^nboundedvars	0
#Variables with only one bound ^{nsingleboundedvars}	90
#Nonlinear Variables ^nnlvars	180
#Nonlinear Binary Variables ^nnlbinvars	0
#Nonlinear Integer Variables ^nnlintvars	0
Objective Sense ^objsense	min
Objective type ^objtype	linear
Objective curvature ^objcurvature	linear
#Negative eigenvalues in objective matrix ^{nobjquadnegev}
#Positive eigenvalues in objective matrix ^{nobjquadposev}
#Nonzeros in Objective ^nobjnz	90
#Nonlinear Nonzeros in Objective ^nobjnlnz	0
#Quadratic Terms in Objective ^nobjquadnz	0
#Square Terms in Objective ^{nobjquaddiagnz}	0
#Constraints ^ncons	270
#Linear Constraints ^nlincons	180
#Quadratic Constraints ^nquadcons	90
#Diagonal Quadratic Constraints ^{ndiagquadcons}	0
Constraints curvature ^{conscurvature}	indefinite
#Convex Nonlinear Constraints ^{nconvexnlcons}	0
#Concave Nonlinear Constraints ^{nconcavenlcons}	0
#Indefinite Nonlinear Constraints ^{nindefinitenlcons}	90
#Nonzeros in Jacobian ^njacobiannz	1341
#Nonlinear Nonzeros in Jacobian ^{njacobiannlnz}	180
#Nonzeros in (Upper-Left) Hessian of Lagrangian ^{nlaghessiannz}	180
#Nonzeros in Diagonal of Hessian of Lagrangian ^{nlaghessiandiagnz}	0
#Blocks in Hessian of Lagrangian ^{nlaghessianblocks}	90
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
Sparsity Jacobian
Sparsity Lag. Hessian