SHIQ

SHIQ is a formal system used in computer science and artificial intelligence to organize and reason about complex types of information. It allows for the definition of concepts (like categories) and relationships between them, including hierarchical (subclass) structures, properties (attributes), and more advanced relationships such as those involving ideas, quantities, or temporal aspects. SHIQ provides a rigorous framework to ensure that reasoning about these concepts remains consistent and efficient, enabling applications like intelligent search, knowledge management, and automated reasoning in complex domains.