Classification with a Neural Network - Minimizing log-loss - Week 3 -

Course Q&A Math for Machine Learning Calculus for Machine Learning and Data Science
1

In week 3 of Calculus, there appears to be one formula missing parentheses (or another symbol to clarify multiplication). See time point 4:27 in video:

The formula seems to intend to multiply alpha times the expression that follows it, starting with -x1 (negative x subscript 1).

Thanks, John

2

In addition, there’s a minor mistake in the formula for updating w12 at time 6:31 in the same video. It should reference the prior value of w12, rather than w11.
thanks

3

Thanks for your reports.

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