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

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