There is a critical requirement for semantic interoperability among heterogeneous computer-
aided tolerancing (CAT) systems with the sustainable growing demand of collaborative
product design. But current data exchange standard for exchanging tolerance information
among these systems can only exchange syntaxes and cannot exchange semantics.
Semantic interoperability among heterogeneous CAT systems is difficult to be implemented
only with this standard. To address this problem, some meta-models of tolerance information …