Neuron tree fanout

Discussion in 'Intelligence & Machines' started by hlreed, Feb 7, 2003.

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  1. hlreed Registered Senior Member

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    Neurons connect to neurons is a fact sometimes forgotten.
    Looking back from the axon, what is the fanout or number of inputs in each layer?
    We have:
    W is width or number of inputs
    L is number of layers
    k is number of synapses in every neuron in this expo.

    W and L are like coordinates Y and X.
    Here is a sample neuron tree with k = 3
    W (impossible to make tables here)
    9|0 0 3
    8|0 0 3
    7|0 0 3
    6|0 0 3
    5|0 0 3
    4|0 0 3
    3|0 3 3
    2|0 3 3
    1|1 3 3
    0|1 2 3

    W = 1 3 9 ...
    L = 0 1 2 ...

    Note that W = k^(L-1) ; Width is synapses to the Layer - 1

    Now, given a neuron k, we can tell how many inputs in L layers of tree.

    I keep hearing that k is 1000 in the human brain. Run that through a vew layers.
    C. elegans has 302 neurons and a k of 2.

    Any more k values you know?

    Harold
     
    Last edited: Feb 7, 2003
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