"""

Based on: 

"Data Classification Using the Dempster-Shafer Method. 

    Qi Chen, Amanda Whitbrook, Uwe Aickelin and Chris Roadknight"

Dempster’s rule of combination (DRC)

"""

# NOTE replace attributes for model of the ensemble 

# The training data is used to build the mass functions

# 1 maximum and minimum values for each class based 

# on one attribute of the training data are found

# The system combines the mass values from all four attributes using DRC,

# thus producing overall mass values for all hypotheses, and the hypothesis

# with the highest belief value is used to classify the data item. 

# If the hypothesis does not represent a single class, 

# then a second step is necessary.