Clarifications for hwk1
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A k-decision list is a decision list where each test is a conjunction
of up to k literals. E.g., a 2-decision list might look like:
if (x_1 = 1 and x_3 = 0) then +
else if (x_2 = 0 and x_3 = 1) then -
else if (x_2 = 1 and x_4 = 0) then -
else +
(this was mentioned briefly in the notes for lecture 1).