COMPSCI 189 Midterm: cs189-sp2013-mt1-Malik-soln
Document Summary
Midterm: you have 1 hour 20 minutes for the exam, the exam is closed book, closed notes except your one-page crib sheet, please use non-programmable calculators only, mark your answers on the exam itself. If you are not sure of your answer you may wish to provide a brief explanation. For a question with p points and k choices, every false positive wil incur a penalty of p/(k 1) points. [14 pts] true/false (a) [1 pt] in support vector machines, we maximize kwk2. True (cid:13) false (f ) [1 pt] if (x, y ) are jointly gaussian, then x and y are also gaussian distributed. True (cid:13) false (g) [1 pt] a function f (x, y, z) is convex if the hessian of f is positive semi-de nite. True (cid:13) false (h) [1 pt] in a least-squares linear regression problem, adding an l2 regularization penalty cannot decrease the l2 error of the solution w on the training data.
