Rough Set Theory is a mathematical framework devised to manage uncertainty in data by utilising lower and upper approximations to characterise vague or imprecise information. The theory, originally ...

Set theory is a mathematical abstract concerned with the grouping of sets of numbers that have commonality. For example, all even numbers make up a set, and all odd numbers comprise a set. All numbers ...

Relational data has become increasingly important in decision analysis in recent years, and so mining knowledge which preserves relationships between objects is an important topic. Graphs can ...