Question: Consider the following four faces shown in Figure 8.7. Again, darkness or number of dots represents density. Lines are used only to distinguish regions and

Consider the following four faces shown in Figure 8.7. Again, darkness or number of dots represents density. Lines are used only to distinguish regions and do not represent points.

(a) For each figure, could you use single link to find the patterns represented by the nose, eyes, and mouth? Explain.
(b) For each figure, could you use K-means to find the patterns represented by the nose, eyes, and mouth? Explain.
(c) What limitation does clustering have in detecting all the patterns formed by the points in Figure 8.7(c)?

Figure 8.7. Figure for Exercise 20.

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