Categorisation
   - Categorisation is one of the basic tasks of all intelligent beings.
 
   
 
   - What is this?
 
   - You've categorised it as a dog or a picture of a dog.
 
   - We do this all the time, both consciously and unconsciously.
 
   - It's also a very common machine learning task.  Can your system
       learn a category (or two or ten categories), and then
       categorize based on that learning?