Contingency Tables as the Foundation for Concepts, Concept Hierarchies, and Rules: The 49er System Approach
Jan M. Żytkow, Robert Zembowicz · Fundamenta Informaticae · 1997
We analyze relationships between different forms of knowledge that can be discovered in the same data matrix (relational table): contingency tables, equations, concept definitions, concept hierarchies, and rules. We argue that contingency tables are