?In the element , the _____ attribute defines thetrackcategory.

Grid-clustering techniques are different from other clustering techniques in that they partition space instead of sets of points.

(a) How does this affect such techniques in terms of the description of the resulting clusters and the types of clusters that can be found? (b) What kind of cluster can be found with grid-based clusters that cannot be found by other types of clustering approaches? (Hint: See Exercise 20 in Chapter 8, page 564.)

WPF uses _________ graphics, which allows graphics to scale without losing quality.

a) bitmap b) vector c) raster-based d) jpeg