Cost function formula

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
1

Hi,

Andrew J termed the cost function the squared error cost function.

I doubt it is not only squared, but he has done the average by multiplying with (1/2*m) in the formula.

So, I think it should be called a mean squared error function rather than calling squared error function.

2

Thanks for your suggestion.

3

Hey TMosh, I’m not sure. It’s just my thought, So can we term it as a mean squared error?

4

Yes, that seems fine.

I think Andrew was using “squared error” as a cue that it’s based on the squares of the errors.

There are other cost functions with different bases that you will see very soon.

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