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A Library of Quadratic Programming Instances

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QPLIB_3859

Formats	gms lp mod qplib
Problem type ^probtype	LMQ
Solution point objective value ^solobjvalue	-1.12695625 (gdx, sol)
Solution point infeasibility ^{solinfeasibility}	3.1817e-12
Donor ^donor	Stefan Vigerske
#Variables ^nvars	1568
#Binary Variables ^nbinvars	600
#Integer Variables ^nintvars	0
#Bounded non-binary Variables ^nboundedvars	0
#Variables with only one bound ^{nsingleboundedvars}	392
#Nonlinear Variables ^nnlvars	392
#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	1
#Nonlinear Nonzeros in Objective ^nobjnlnz	0
#Quadratic Terms in Objective ^nobjquadnz	0
#Square Terms in Objective ^{nobjquaddiagnz}	0
#Constraints ^ncons	1785
#Linear Constraints ^nlincons	1225
#Quadratic Constraints ^nquadcons	560
#Diagonal Quadratic Constraints ^{ndiagquadcons}	0
Constraints curvature ^{conscurvature}	indefinite
#Convex Nonlinear Constraints ^{nconvexnlcons}	0
#Concave Nonlinear Constraints ^{nconcavenlcons}	0
#Indefinite Nonlinear Constraints ^{nindefinitenlcons}	560
#Nonzeros in Jacobian ^njacobiannz	8088
#Nonlinear Nonzeros in Jacobian ^{njacobiannlnz}	3792
#Nonzeros in (Upper-Left) Hessian of Lagrangian ^{nlaghessiannz}	768
#Nonzeros in Diagonal of Hessian of Lagrangian ^{nlaghessiandiagnz}	0
#Blocks in Hessian of Lagrangian ^{nlaghessianblocks}	8
Minimal blocksize in Hessian of Lagrangian ^{laghessianminblocksize}	49
Maximal blocksize in Hessian of Lagrangian ^{laghessianmaxblocksize}	49
Average blocksize in Hessian of Lagrangian ^{laghessianavgblocksize}	49.0
Sparsity Jacobian
Sparsity Lag. Hessian