Polynomial by Binomial Classification

Synopsis

This operator builds a polynomial classification model through the given binomial classification learner.

Description

The Polynomial by Binomial Classification operator is a nested operator i.e. it has a subprocess. The subprocess must have a binomial classification learner i.e. an operator that generates a binomial classification model. This operator builds a polynomial classification model using the binomial classification learner provided in its subprocess. You need to have basic understanding of subprocesses in order to apply this operator. Please study the documentation of theSubprocessoperator for basic understanding of subprocesses.

Many classification operators (e.g. the SVM operator) allow for classification only for binomial (binary) label. The Polynomial by Binomial Classification operator uses a binomial classifier and generates binomial classification models for different classes and then aggregates the responses of these binomial classification models for classification of polynomial label.

Input

training set

This input port expects an ExampleSet. It is the output of the Retrieve operator in the attached Example Process. The output of other operators can also be used as input.

Output

model

The polynomial classification model is delivered from this output port. This classification model can now be applied on unseen data sets for prediction of thelabelattribute.

example set

The ExampleSet that was given as input is passed without changing to the output through this port. This is usually used to reuse the same ExampleSet in further operators or to view the ExampleSet in the Results Workspace.

Parameters

Classification strategies

This parameter specifies the strategy that should be used for multi-class classifications i.e. polynomial classifications.

Random code multiplicator

This parameter is only available when theclassification strategiesparameter is set to 'exhaustive code' or 'random code'. This parameter specifies a multiplicator regulating the codeword length in random code modus.

Use local random seed

This parameter indicates if alocal random seedshould be used for randomization. Using the same value oflocal random seedwill produce the same randomization.

Local random seed

This parameter specifies thelocal random seed．这个参数只是如果可用use local random seedparameter is set to true.