Not able to understand concept

#1

I am not able to understand how we used the probability likelihood function

#2

Hey,
I would suggest you to watch the video again, It is very much clear in video itself.
It’s just the concept is using the probability of each point to get classified correctly, and since we want all the points should be classified correctly, We take the product of probability of each point to get classified correctly. And after that taking log to make things easier for us.

#3

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