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class Huber( Kernel )	[source]

Huber is an improper Kernel function

  K( x ) = 1.0 if |x| < 1 else 1.0 / |x|

It is improper because the integral equals +inf.

It plays a role in robust fitting, see RobustShell, for medianizing the fit.

Huber( )	[source]

Constructor.

Improper Kernel.

  Using
  integral = inf
  fwhm = 4
  range = inf

result( x )	[source]

Return the result for input values.

Parameters

• x : array-like
       input values

partial( x )	[source]

Return the partial derivative wrt the input values.

Parameters

• x : array-like
       the input values

isBound( )	[source]

Return False

name( )	[source]

Return the name of the kernel

Methods inherited from Kernel

• resultsq( xsq )