Wrong Matrices multipication ?
Hi,
i was watching the course in the second chapiter of linear model multiple input/ output and in the course there is a muliplication of matrices and i noticed that the multiplication is not correct.
the output should be Y1 = 743 x 403.77 + 1.21 * 13.9 + 1112.45
Y1 should take first line of X and first column of wieghts ? am i correct ??
1 answers ( 0 marked as helpful)
Hi,
Yes, you are correct, the multiplication was not represented correctly in this section of the video.
The mistake is in the weight matrix itself, it should be transposed. Thus, the actual calculation and the resulting numbers are actually correct, it's just the matrix representation is wrong in the image.
Thank you for noticing and reporting the issue!
Best,
Nikola, 365 Team