Kernel Constructor

Definition

Namespace: Numerics.NET.Statistics
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 10.9.0

Overload List

Kernel(Func<Double, Double>, Interval<Double>, Double, Int32)Constructs a kernel with an ordinary evaluation function.
Kernel(Func<Double, Double>, Func<Double, Double>, Interval<Double>, Double, Int32)Constructs a kernel with an explicit logarithmic evaluation function.

Kernel(Func<Double, Double>, Interval<Double>, Double, Int32)

Constructs a kernel with an ordinary evaluation function.
C# 
public Kernel(
	Func<double, double> kernelFunction,
	Interval<double> domain,
	double norm = NaN,
	int order = 2
)

Parameters

kernelFunction  Func<Double, Double>
The raw kernel function.
domain  Interval<Double>
The interval where the kernel is nonzero.
norm  Double  (Optional)
The positive multiplicative normalization constant, or NaN to request numerical integration.
order  Int32  (Optional)
The positive order of the kernel.

Remarks

A NaN normalization requests numerical integration. Logarithmic evaluation uses the logarithm of this function; a separate log delegate can be supplied through the other constructor. The function must remain stable and safe for concurrent calls.

Exceptions

ArgumentNullExceptionkernelFunction is null.
ArgumentNullExceptionEither delegate is null.
ArgumentExceptionThe support bounds are NaN, equal or reversed.
ArgumentOutOfRangeExceptionNormalization is not NaN or finite and positive, or the order is not positive.

Kernel(Func<Double, Double>, Func<Double, Double>, Interval<Double>, Double, Int32)

Constructs a kernel with an explicit logarithmic evaluation function.
C# 
public Kernel(
	Func<double, double> kernelFunction,
	Func<double, double> logKernelFunction,
	Interval<double> domain,
	double norm = NaN,
	int order = 2
)

Parameters

kernelFunction  Func<Double, Double>
The raw kernel function.
logKernelFunction  Func<Double, Double>
The natural logarithm of the raw kernel, before normalization. Return negative infinity where the kernel is zero.
domain  Interval<Double>
The interval where the kernel is nonzero.
norm  Double  (Optional)
The positive multiplicative normalization constant, or NaN to request numerical integration.
order  Int32  (Optional)
The positive order of the kernel.

Remarks

Both delegates must describe the same kernel and be stable and safe for concurrent calls. Providing a logarithmic delegate preserves log-density after the ordinary function underflows.

Exceptions

ArgumentNullExceptionEither delegate is null.
ArgumentExceptionThe support bounds are NaN, equal or reversed.
ArgumentOutOfRangeExceptionNormalization is not NaN or finite and positive, or the order is not positive.

See Also