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In this video, I want to just quickly step you
through the logistics of how to work on

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homeworks in this class and how to use the
submission system which will let you verify

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right away that you got the right answer for
your machine learning program exercise.

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Here's my Octave window and
let's first go to my desktop.

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I saved the files for my first exercise,
some of the files on my desktop:

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in this directory, 'ml-class-ex1'.

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And we provide a number files
and ask you to edit some of them.

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So the first file should meet the details in
the pdf file for this programming exercise.

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But one of the files we ask you to edit is
this file called warmUpExercise.m, where the

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exercise is really just to make sure that
you're familiar with the submission system.

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And all you need to do is
return the 5x5 identity matrix.

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So the solution to this exercise I just
showed you is to write A = eye(5).

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So that modifies this function to
generate the 5x5 identity matrix.

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And this function warmUpExercise()
now returns the 5x5 identity matrix.

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And I'm just going to save it.

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So I've done the first part of this homework.
Going back to my Octave window,

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let's now go to my directory,
'C:\Users\ang\Desktop\ml-class-ex1'.

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And if I want to make sure that I've implemented
this, type 'warmUpExercise()' like so.

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And yup, it returns the 5x5 identity matrix
that we just wrote the code to create.

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And I can now submit the code as follows.
I'm going to type 'submit()' in this

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directory and I'm ready to submit part 1
so I'm going to enter choice '1'.

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So it asks me for my email address.
I'm going go to the course website.

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This is an internal testing site, so your version
of the website may look a little bit different.

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But that's my email address and this is my submission
password, and I'm just going to type them in here.

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So I have ang@cs.stanford.edu and
my submission password is 9yC75USsGf.

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I'm going to hit enter; it connects to the server
and submits it, and right away

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it tells you "Congratulations! You have
successfully completed Homework 1 Part 1".

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And this gives you a verification
that you got this part right.

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And if you don't submit the right answer,
then it will give you a message indicating

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that you haven't quite gotten it right yet.

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And you can use this submission password and
you can generate new passwords; it doesn't matter.

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But you can also use your regular website
login password, but because this password

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here is typed in clear text on your monitor,
we gave you this extra submission password

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in case you don't want to type in your
website's normal password onto a window

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that, depending on your operating system,
may or may not appear as text when you type

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it into the Octave submission script.

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So, that's how you submit the
homeworks after you've done it.

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Good luck, and, when you get around to
homeworks, I hope you get all of them right.

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And finally, in the next and final Octave
tutorial video, I want to tell you about

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vectorization, which is a way to get your
Octave code to run much more efficiently.