Abstract
In engineering design, innovative design is required. Thinking function of artifacts is necessary to realize such innovative design. Thus function modeling is important. In this study, function reasoning is a kind of operation to generate new function. A new framework is required to realize any kind of function reasoning. For this purpose, we developed relative function framework. The features of this framework are relativity between a function and behaviors and linguistic rules among functional expressions. SVOD frame was proposed for relativity. A case study was done for linguistic rules.
