xls.objfun {XLS}

Preparing eXtreme Least Squares Nonlinear Objective Function

Description

Automatically used in xls.fit() No need to use if the objective function is not specifically desired to be achieved.

Usage

xls.objfun(data, error_column_name, error_weights, error_ahead_level)

Arguments

data

A data.frame object which is returned by xls.prep. Tip: xls.prep's .$data sub object returns the data.frame

error_column_name

Symbolic error column's name. By default, it is named "error_symbolic" by xls.prep()

error_weights

A numeric vector including error weights by order.

error_ahead_level

An integer which represents how many steps further the parameters will be optimized for each data point.

Value

A function object.