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CS 229, Fall 2018 ProblemSet#0: …
cs229.stanford.eduCS229 Problem Set #0 2 (a) Let z2Rn be an n-vector. Show that A= zzT is positive semide nite. (b) Let z2Rn be a non-zero n-vector. Let A= zzT.What is the null-space of A? What is the rank of A? (c) Let A2R n be positive semide nite and B2Rm …
CS 229, Public Course Problem Set #1 Solutions: Supervised ...
see.stanford.edu2. Locally-weighted logistic regression In this problem you will implement a locally-weighted version of logistic regression, where we weight different training examples differently according to the query point. The locally-weighted logistic regression problem is to maximize ℓ(θ) = − λ 2 θTθ + Xm i=1 w(i) h y(i) logh θ(x (i))+(1−y ...