KNN_Pick

This module chooses a class based on some input elements (neighbors). It can deal with categorical classes (then the amount of instances of the classes decides), and with qualitative classes (then the mean is calculated). The amount of instances and the mean can be weighed. If this is the case, then instances will be counted more (or less) times, depending on their distance. This module can be connected to the KNN module (KNN.OUTPUT_TABLE to KNN_PICK.OUTPUT_TABLE and KNN.DISTANCE_TABLE to KNN_PICK.DISTANCE_TABLE. Note: KNN.INPUT_TABLE is not used by this module. This module is too simple to look at individual elements coordinates.).

Example XML definition

A simple example

  <module
      class = "KNN_Pick"
      name = "KNN_PICK"
  />

Parameters

Name	Description	Type	Default
class	The class name for the module; must be "KNN_Pick".	string
name	The name of this instance of the module.	string
categorical	Categorical means that the classes of the elements are discrete. E.g. {1,2,3}. If 'categorical' is set to false it means the values are qualitative, i.e. probably each element has a class of its own (or rather, there are no discrete classes). For categorical classes the amount of each class is counted, for qualitative classes a mean is calculated. The result can be weighed in both cases.	bool	true
weighed	If this is set to true the elements with smaller distances are more valuable for the result. If you want to edit exactly how this is calculated, look at the function GetWeightFactor(distance).	bool	false
weight_divisor	This is the divisor in the division when the weight factor is calculated. The distance is part of the divider. If you want to edit exactly how this is calculated, look at the function GetWeightFactor(distance)	float	1.0

Module Connections

Inputs

Name	Description
OUTPUT_TABLE	The outputs (classes) of the elements (neighbors).
DISTANCE_TABLE	The distances of the elements (neighbors).

Outputs

Name	Description
CLASS_OUTPUT	The calculated class.

Author

Alexander Kolodziej
alexander.kolodziej@gmail.com
LUCS

Files

KNN_Pick.h
KNN_Pick.cc
KNN_Pick.ikc