1. Neural Networks…. …. The Undiscovered Country. Jonathan Y
Neural Networks…. ….The Undiscovered Country ? Jonathan Y. Clark Department of Computing University of Surrey

2. Conventional Programs
If …then …
Inflexible
Extremely precise
Do not deal easily with ‘fuzzy’ data

3. Neural Networks Able to deal with ‘fuzzy’ data
Able to learn from experience
Able to generalise

4. Natural Neural Networks
Simple NNNs: Coelenterates (Hydra)
Higher Animals: The Brain

6. A Biological Neuron

7. Example: A Simple Vision System…
Perceptron
Example: A Simple Vision System…

8. Multilayer Perceptron

9. Artificial Neural Networks
SUPERVISED (for identifying)
UNSUPERVISED (for classifying)

10. Self-Organising Map (SOM)

11. Lithops (Living Stones)

13. Conclusions and Summary
Artificial Neural Networks (ANNs) are :-
FUN (definitely!)
NOVEL (almost…..)
USEFUL (especially if expert unavailable)
A link between Biology and Computing
A step in the direction of ‘thinking’ machines…

14. That’s All Folks! (Bugs Bunny Copyright Warner Bros.)
Credits:
Star trek pictures
(except UC_102_3.jpg from
and Paramount Inc.
Hydra pictures
moviegallery/pondscum
/coelenterata/hydra/
Nerve cell picture
~bi102vc/102f00/terry/
That’s All Folks! (Bugs Bunny Copyright Warner Bros.)