Nice list, has everything and the kitchen sink(ers). Two comments:<p>a) Inductive Logic Programming (and generally relational learning) is ideal for feature discovery and firmly in the symbolic camp, so the reliance of the Symbolists on hand-crafted features is not an absolute.<p>b) PAC learning should go under symbolic techniques, no? In fact, so should decision tree learning.<p>Also, I think it&#x27;s obvious you can always unify and divide classifications like the above to come up with as many or as few &quot;tribes&quot; as you like. The real question is: are there really that many people who are wedded to their favourite technique, so much so that they won&#x27;t ever try anything different?