You can tell which scene is currently displayed by the scene number in the ____ corner of the Stage window.

Assume that the support threshold is equal to 30%.

Given the lattice structure shown in Figure 6.4 and the transactions given in Table 6.3, label each node with the following letter(s): • M if the node is a maximal frequent itemset, • C if it is a closed frequent itemset, • N if it is frequent but neither maximal nor closed, and • I if it is infrequent.

The class hierarchy begins with class __________.

a) Object b) Point c) Root d) Base