Hello.
Welcome back.
In this lesson we should talk a bit more about life as a unit.
Let's examine this for Lee a new network this new network takes three input layer one has five units
the two has five units the three has three unit and therefore has one unit.
We often denote the number of layers of a neural network with a capital L number of units in a layer
is denoted by N superscript square brackets L where l denote delay a number so that in our current neural
network and superscript 1 is equal to 5 and and superscript 3 is equal to 5.
And so on and so forth we denote activation in layer l by a superscript square bracket l mean that the
input layer is sometimes referred to us layer a superscript 0 and the outputs layer which is the same
as Y heart is sometimes denoted as a superscript copy to l.
Now let's talk a bit more about the shapes.