CS 451 Quiz 3
Model and cost function; Linear algebra with Octave / Matlab
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Model and Cost Function
What is *
1 point
Captionless Image
What does the hypothesis function h attempt? *
1 point
Consider the following cost function J:
What is true about the cost function J? (Check all that apply) *
1 point
Required
The goal of linear regression is to *
1 point
Gradient Descent
In the above plot, what does the vertical axis represent? *
1 point
If the above function is minimized with gradient descent, the solution could depend on: (check all that apply) *
1 point
Required
Linear algebra with Octave / Matlab
Consider the following problems in Octave / Matlab notation. Recall that [1, 2, 3] is a row vector, [1; 2; 3] is a column vector, and x' is the transpose of x.
If v = [2, 3, 4], what is v'? *
1 point
If v = [2, 3, 4] and w = [2, 1, -1], what is v - w ? *
1 point
If v = [2, 3, 4] and w = [2, 1, -1], what is w' - v' ? *
1 point
If v = [2, 3, 4] and w = [2, 1, -1], what is v * w' ? *
1 point
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