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Fields, Methods

Extends:

DecTreeMethod

See also:

ID3Properties, DecTreeMethod, ID3Splitter, DecTreeForm

Appears in:

Algorithm classes

Connections

Association link to class [Algorithm classes].ID3Properties     Generalization link to class [Algorithm classes].DecTreeMethod     Association link from class [Algorithm classes].ID3Splitter     Association link from class [Main classes].DecTreeForm

ID3 Attributes

Attribute Details private ID3Properties   Prop Notes: Properties for this method.

ID3 Methods

Operation Details public ID3(): Sequential Notes: Constructor. public DescribeMethod():string Sequential Tags: override=true Notes: Get a description for a method instance, for its options etc. Used by stepping. protected BuildSpecific():int Sequential Tags: override=true Notes: Main function for building the decision tree. @returns negative if error, zero if succes protected CompareSplitters(    int node,    DecTreeSplitter splitter1,    DecTreeSplitter splitter2):int Sequential Tags: override=true Notes: Compares two splitters which is better. @returns 1 if splitter1 is better than splitter2, 0 if it is equivalent, -1 else protected GetSplitters(    int node):ArrayList Sequential Tags: override=true Notes: Returns ArrayList of Spitter class - all available splitters in node. @returns private SetAverageGain(    ArrayList splitters):void Sequential Notes: Count and set the average gain to all the splitters. private AverageEntropy(    int node,    ID3Splitter sp):double Sequential Notes: Gets an avegare entropy for the node and its splitter. @returns private Entropy(    int node,    string where):double Sequential Notes: Gets an entropy for one branch in the node. @returns private SplitInfo(    int node,    ID3Splitter sp):double Sequential Notes: Count the split info value. Special value which is higher when the count of branches is bigger. @returns

class: ID3