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Weighted Least Squares: Solution Derivation
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This is a follow-up video to the previous one. Here we derive a solution that minimizes the cost function of weighted least squares, it is requisite that you watch this and the previous video before progressing with least absolute deviations.
Also note that W here is a diagonal matrix that includes the corresponding w_i factors from the sum.
Also note that W here is a diagonal matrix that includes the corresponding w_i factors from the sum.
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