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Which of the following would not be considered an operating system resource?

A. RAM B. CPU (central processing unit) C. Storage D. URL (Uniform Resource Locator)

Generate three connected ER graphs: G 1 (with edge probability of 0.2), G 2 (with edge prob- ability of 0.25), and G3 (with edge probability of 0.3), each having 50 nodes. Define three graph signals: f1 = u 0 on graph G 1 , f2 = u24 on graph G 2, and f3 = u49 on graph G 3. Now connect the three graphs by adding six additional edges to form a single connected graph G . Consider signal f = [ f1 T f2 T f3 T ] T on graph G

(a) Plot the GFT coefficients of signal

f. Do they convey any information about the local

frequency content of the signal f supported by graphs

G1,G2, andG3? Why or why not?

(b) Plot and explain the spectrogram of graph signal

f assuming a heat kernel g^(?`) = ae?k?`;

choose the constants a and k such that ||g||2 = 1.