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A Library of Quadratic Programming Instances

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QPLIB_3631

Formats	gms lp mod qplib
Problem type ^probtype	LMQ
Solution point objective value ^solobjvalue	491.37971450 (gdx, sol)
Solution point infeasibility ^{solinfeasibility}	3.5527e-15
Donor ^donor	Stefan Vigerske
#Variables ^nvars	893
#Binary Variables ^nbinvars	750
#Integer Variables ^nintvars	0
#Bounded non-binary Variables ^nboundedvars	4
#Variables with only one bound ^{nsingleboundedvars}	0
#Nonlinear Variables ^nnlvars	43
#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	25
#Nonlinear Nonzeros in Objective ^nobjnlnz	0
#Quadratic Terms in Objective ^nobjquadnz	0
#Square Terms in Objective ^{nobjquaddiagnz}	0
#Constraints ^ncons	235
#Linear Constraints ^nlincons	210
#Quadratic Constraints ^nquadcons	25
#Diagonal Quadratic Constraints ^{ndiagquadcons}	0
Constraints curvature ^{conscurvature}	indefinite
#Convex Nonlinear Constraints ^{nconvexnlcons}	0
#Concave Nonlinear Constraints ^{nconcavenlcons}	0
#Indefinite Nonlinear Constraints ^{nindefinitenlcons}	25
#Nonzeros in Jacobian ^njacobiannz	2031
#Nonlinear Nonzeros in Jacobian ^{njacobiannlnz}	111
#Nonzeros in (Upper-Left) Hessian of Lagrangian ^{nlaghessiannz}	172
#Nonzeros in Diagonal of Hessian of Lagrangian ^{nlaghessiandiagnz}	0
#Blocks in Hessian of Lagrangian ^{nlaghessianblocks}	1
Minimal blocksize in Hessian of Lagrangian ^{laghessianminblocksize}	43
Maximal blocksize in Hessian of Lagrangian ^{laghessianmaxblocksize}	43
Average blocksize in Hessian of Lagrangian ^{laghessianavgblocksize}	43.0
Sparsity Jacobian
Sparsity Lag. Hessian