Week 3 - Transfer Learning slides error?

[mikdr]

I’m not sure if I missed something, but here W’s (weights) are shown as scalars and b’s (biases) as vectors. Shouldn’t it be the opposite?

[TMosh]

Generally the weights are matrices and the biases are vectors.

[mikdr]

I see, because each neuron has a single bias value… I reviewed back in the notes and there is information that matrices are bolded uppercase (W). I missed it somewhere in the videos, but thanks for clarification.