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# The negative log-likelihood can be calculated according to NLL [D,w) = 2:1 [(1 yg) lcg(1 CI'(WTXt-)) + yl- log cr[wa,-) The maximum likelihood...

I am not sure how to calculate the log-likelihood, and need some help.

The negative log-likelihood can be calculated according toNLL [D,w) = — 2:1 [(1 — yg) lcg(1 — CI'(WTXt-)) + yl- log cr[wa,-)ﬂ The maximum likelihood estimator WMLE can be found by solving for arg min NLL through an iterative gradient descent procedure. a. Derive the gradient of the negative log-likelihood in terms of w for this setting. [5points]