Gradient Checking

Gradient Checking
  • Backprop sometimes has bugs. Gradient checking will check wheter backprop will eventually decreasing.....
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Implementation note: Unrolling parameters

Implementation note: Unrolling parameters
  • Advanced optimization to unroll parameter from matrices into vectors
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Backpropagation Intuition

Backpropagation Intuition
  • Make a better intuition about backpropagation
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Backpropagation Algorithm

Backpropagation Algorithm
  • Algorihtm to minimize the cost function(BA) in particular
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Multi-class Classification

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

Examples & Intuition ll
  • how neural networks can compute non-linear hypothesis
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Examples & Intuition l

Examples & Intuition l
give better intuition for neural networks

Model Representation ll

Model Representation ll

Model Representation l

Model Representation l

Neurons & the brain

Neurons & the brain

  • computer becomes fast enough to handle the computational expensive of neural networks
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