QuasiNewtonTrainer.IError Interface

QuasiNewtonTrainerIError Interface

Error function to be minimized by trainer.

Namespace: Imsl.DataMining.Neural
Assembly: ImslCS (in ImslCS.dll) Version: 6.5.2.0

Syntax

public interface IError

Public Interface IError

public interface class IError

type IError =  interface end

The QuasiNewtonTrainerIError type exposes the following members.

Methods

	Name	Description
	Error	The contribution to the error from a single training output target. This is the function $e(y_i, \hat{y}_i)$ .
	ErrorGradient	The derivative of the error function with respect to the forecast output.

Remarks

This trainer attempts to solve the problem

$\min_{w} \sum_{i=0}^{n-1} e(y_i, \hat{y}_i)$

where w are the weights, n is the number of training patterns,

is a training target output and $\hat{y}_i$ is its forecast value.

This interface defines the function $e(y,\hat{y})$ and its derivative with respect to its computed value, $de/d\hat{y}$ .