Newton Conjugate Gradient Optimizer.Preconditioner Property
Gets or sets the Newton-system preconditioner.
Definition
Namespace: Numerics.NET.Optimization
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 10.9.0
C#
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 10.9.0
public NewtonCgPreconditioner Preconditioner { get; set; }Property Value
NewtonCgPreconditionerRemarks
Automatic uses sparse IC, a supplied diagonal, or inverse secant history, in that order.
IC/MIC require both sparse Hessian callbacks. Explicit none/diagonal/history with a supplied product avoid unused sparse entries.
Exceptions
| Argument | The value is undefined. |
| Invalid | A calculation is underway. |