PMErrorMinimizer.class.st

"
ErrorMinimizer fits a function to some data using an ErrorOfParameterFunction . It is internally used by GeneralFunctionFit . It is generally better to use GeneralFunctionFit .
f:=[:x :a :b|a*x / (b+x)].
col:=(1 to: 20)collect: [:i|i@(f cull: i cull: 2 cull: 0.4) ].
er:=ErrorOfParameterFunction function: f data: col.
er errorType: #median.
fit:= ErrorMinimizer function: er.
fit evaluate . 
fit  parameters. 	-->  #(2.0 0.39999999999903596)
"
Class {
	#name : #PMErrorMinimizer,
	#superclass : #PMFunctionFit,
	#category : 'Math-FunctionFit'
}

{ #category : #creation }
PMErrorMinimizer class >> function: anErrorOfParameterFunction [ 
|f d|
f := PMErrorAsParameterFunction function: anErrorOfParameterFunction.
d :=( 1 to:( f maxFunction ))collect: [:i| i@0]. 
^self new initialize: d data: f
]

{ #category : #creation }
PMErrorMinimizer class >> function: aBlock data: aCollection [
^self shouldNotImplement
]

{ #category : #accessing }
PMErrorMinimizer >> maxFunction [ 
"The number of data partitions used."
^dataHolder size
]