prtClass   Base class for prt Classification objects
 
  All prtClass objects inherit all properities and methods from the
  prtAction object. prtClass objects have the following additional
  properties:
  
    isNativeMary - Whather or not the classifier natively produces an
                   M-ary result.
 
    internalDecider - An optionl property, the default is empty.
                    InternalDecider is an instance of a prtDecision 
                    object. When set, the RUN function of the 
                    classifier will output discrete values
                    corresponding to the class determined by the 
                    classifier and the decision object
                    (binary classifier), or a binary vector of
                    zeros and ones (M-ary classification).
 
    prtClass objects have the following methods:
 
    plot          - Plot the output confidence of a trained classifier.
                    This function only operates when trained by a
                    dataset of 3 dimensions or lower.
 
    A prtClass object inherits the TRAIN, RUN, CROSSVALIDATE and KFOLDS
    functions from the prtAction object.
 
 
    
 
 
 
    Sub-classing prtClass:
        Concrete sub-classes of prtClass must define the abstract
    methods trainAction and runAction defined in prtAction.  These
    methods have function definitions as follows:
 
        Obj = trainAction(Obj, DataSet)
        DataSet = runAction(Obj, DataSet)
 
    Both methods are protected and hidden.  A concrete subclass of
    prtClass should contain code similar to the following:
 
 
      methods (Access = protected, Hidden = true)
          function Obj = trainAction(Obj, DataSet)
            %Code to set trained parameters of Obj
            
          end
 
          function DataSetOut = runAction(Obj, DataSet)
            %Code to run trained Obj on DataSet and generate DataSetOut
            %with observations set to the output of the classification
            %algorithm
 
          end
      end