What algorithmic approach does IBM Refactoring Assistant use to suggest candidate service clusters?

Think of it like working hands-on with IBM mainframe systems — the answer here is 'Analyzing structural coupling metrics from the ADDI dependency graph to identify tightly connected program clusters'. The Refactoring Assistant uses structural coupling analysis on the ADDI dependency graph, identifying clusters of programs with dense internal connections and sparse connections to the rest of the por. On real mainframe exams, this concept comes up repeatedly so make sure you have it locked in.