Dogs love the snow and so do i

USA Easter 2009

Just updated the pictures for easter this year. backdated to the right place and also under photos and travels. so have a look if you like things.

Investigating Evolving Controllers for Simulated Humanoids

Well, if you're bored, or are having trouble sleeping then:

Have a read of this

That's everything I've done so far and will do in the next couple of months, snore.......

New controller

As the improvement of the robot in evolution was so slow I've been thinking of how to simplify the controller in order for there to be less values to change.

So what i've done is break the controller down. and only have it control one half of the body. Then run the inputs through it twice, but swapping the left and right leg on the second run.

This takes the number of connections down from:

Inputs:

15 bodies x 3 coords = 45

Hidden:

50

Output:

20

Input to Hidden = 45 x 50 = 2,250

Hidden to Output = 50 x 20 = 1,000

Total = 3,250

To:

Inputs:

45

Hidden:

25

Output:

12

Input to Hidden = 45 x 25 = 1,125

Hidden to Output = 25 x 12 = 300

Total = 1,425

Firstly this means both sides act the same (obviously not at the same time).

Secondly its easier to train a smaller network.

Thirdly computationally, even running the smaller network through twice only leads to 2,850 connections being considered.

Hope that works now, the new idea is below: