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An informal description of artificial neural networks

An informal description of artificial neural networks. John MacCormick. Decision tree for “Should I take an umbrella ?”. Schematic representation of a biological neuron. Neural network for “Should I take an umbrella?”. Objective: detect sunglasses.

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An informal description of artificial neural networks

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  1. An informal description of artificial neural networks John MacCormick

  2. Decision tree for “Should I take an umbrella?”

  3. Schematic representation of a biological neuron

  4. Neural network for “Should I take an umbrella?”

  5. Objective: detect sunglasses Source for sunglasses data and code: Tom Mitchell, Machine Learning, McGraw-Hill (1998).

  6. We use an artificial neural network with a single hidden layer

  7. Our artificial neurons compute a weighted sum followed by a non-linear threshold (actually a sigmoid)

  8. The weights of the inputs to each neuron are tuned to produce good results on the training set

  9. This experiment produced an 85% success rate for determining the presence of sunglasses

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