Multi-class Classification

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Multi-class Classification
  • last sample videos actually a multiclass classification for differentiate 10 digits learning of handwriting recognition

  • multiclass is computed by extending the principal of one-vs-all


  • instead of classify y as earlier with number,  classify based on matrices
  • (n+1) units x m classes
  • (5+1) x 10 = 60
  • +1 for bias unit
  • this is how to represent neural networks and hypothesis representation
  • next how to take training set and how automatically generated parameters for neural networks