Other Categorisation Algorithms
   - There are a host of 
    
    other algorithms.
 
   - C4.5 is derived from ID3.
 
   - There is a lot to be said for statistics.
 
   - Multilayer Perceptrons are well explored.
 
   - Support Vector Machines were best last year.
 
   - There are also some interesting aids like boosting.
 
   - Feature selection is clearly important.
 
   - So which algorithm is best?
 
   - None of them!