For instance, instead of listing all countries and their neighbors explicitly in the source code, one may have an array of countries, an array of decision variables representing the color of each country, and an array boolean [ ] [ ] neighboring or a predicate ( a boolean function ) boolean isNeighbor ( ).
42.
Consider the table above, and let P _ { 4 } be the decision variable ( i . e ., the variable on the right side of the implications ) and let \ { P _ 1, P _ 2, P _ 3 \ } be the condition variables ( on the left side of the implication ).
43.
The CPC, on the other hand, quantifies the data compression in terms of entropy of the marginal distribution over all partitions, where \ lambda is the selected population size, | \ tau | is the number of decision variables in the linkage set \ tau and H ( \ tau ) is the joint entropy of the variables in \ tau
