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Biological Inspiration for Artificial Neural Networks Nick Mascola.

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Presentation on theme: "Biological Inspiration for Artificial Neural Networks Nick Mascola."— Presentation transcript:

1 Biological Inspiration for Artificial Neural Networks Nick Mascola

2 Artificial Neuron Output=f(Σ(Weights*Inputs)) Basic Structure

3 Several Layered Network A Typical Network Organizes these Neurons into layers that feed into each other sequentially

4 Typical Transfer Functions

5 Recall that Over Time:

6 Finite Amount of Resources

7 Implementation  void distributeweightpoints(Connections con){  vector list = con.weights;  int totalpoints=con.points;  double total=weightsummation(list);  double temp;  for(unsigned int i=0; i<con.weights.size(); i++){  temp=list[i].value/total;  if(temp<1/totalpoints){  con.weights[i]=0;}  else{  con.weights[i]=temp;}  }

8 Long Term Potentiation SpecificityCooperativity Features Similar to ANN Functionality:

9 Distinct Feature Associativity

10 Possible Solution

11 …Or More Generally

12 References  http://hagan.ecen.ceat.okstate.edu/nnd.html http://hagan.ecen.ceat.okstate.edu/nnd.html  Matlab Neural Network Toolbox  Pattern Classification (2nd ed) by Richard O. Duda, Peter E. Hart and David G. Stork  Pattern Recognition and Machine Learning. Christopher M. Bishop   The long-term potential of LTP Robert C.Malenka


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