Chapter 7
Setness Comparison Operations
You can type setcomparison at the ASPL prompt to get the summary of ASPL Set Comparison. ASPL provides setness operators to compare your grouped data represented by set variables: equal, subset, superset, and disjoint. These comparative operators are called setcomparison operators, and they can be prefixed with two syntatic expressions acting as quantifiers: mostly and loosely. The mostly is a settable percentage using the mostly command hence making the comparison based on a certain percentage. The loosely quantifier make a loosely set comparisons at the elements level and by ignoring the group label and its subgroups. Furthemore, the set comparison can be done by ignoring the elements attributes; this is simply done by prefixing the comparison operator with 'noeattr'.
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