ML02 ex05 (mylinearregression): multiple issues (examples, syntax)

[mli42]

• Day: 07
• Exercise: 05

There are 4 issues on this exercice:

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1) Init of MyLR

In the example, there is:

mylr = MyLR([[1.], [1.], [1.], [1.], [1]])

Thus giving a list of list, whereas in the previous module, we are given a np array:

lr1 = MyLR(np.array([[2], [0.7]]))

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2. mylinearregression

In the previous module, the class was named my_linear_regression (with _), which, imo, is more readable, and it should have the same name for this module.
It is currently not producing any bug, but it is a bit inconsistent.

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3. mylr.theta

In the examples, it tries to access mylr.theta, but in the previous module the variable was named thetas with an S. A bit inconsistent too.

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4. loss / loss elem

In order to satisfy the examples, I noticed the division by 2m is performed during loss() and not loss_elem(). Imo loss should be only the sum of loss_elem, as it was in the previous module.

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Fixed on:

• Github
• Gitlab