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HBOS Categorical Implementation

Open Yahya requested to merge github/fork/John-Almardeny/HBOS_Categorical_Features into development

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Closes #21

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New Model Submissions:

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Description

There are several ways to convert categorical values to numerical ones in a given dataset, so HBOS can work with it.

I implemented 3 ways, left the option to the user to specify which by changing parameter category that has been added to HBOS Class. Methods are:

  1. One Hot Encoding.
  2. Label Encoding.
  3. Frequency Ratio Encoding.

Since, as far as I am ware of, PyOD does not provide synthesized categorical data (can be added on the list for future work ;-) ) , I tested the implementation on 3 different real-world categorical datasets, namely: Breast Cancer, Car Evaluation, Tic Tac Toe. Which can be found in HBOS_categorical_example.py file.