ber of symptoms Alice and Bob have in common in terms of vectors x and y. b) Use x and y to express the number of sym

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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2. Suppose x and y are Boolean feature vectors, i.e., each entry is either 0 or 1, that encode the presence of symptoms in patients Alice and Bob.

(a) Express the number of symptoms Alice and Bob have in common in terms of vectors x and y.

b) Use x and y to express the number of symptoms Bob has and Alice doesn’t

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