Implies there is similar content in two-design knowledge. This relation can be built by automatic semantic analysis or by domain knowledge expert
Self-inverse transitivity
A B means the content in knowledge A is similar to the content in knowledge B. And it can be inferred the opposite is also true
Explanation-of
Implies that the left side knowledge shows the detail or gives the additional explanation of the right side knowledge
Transitivity
A B means knowledge A gives additional information account for knowledge B. We can get A C if we know that B C is true
Parent-of
The existing design knowledge can be packaged together in new design knowledge. This relationship means the right side knowledge is packaged into the left side knowledge
Inverse (child-of) transitivity
A B means knowledge B is packaged into knowledge A. And if we know B C, we can get A C
Dependent-of
Some design knowledge relies on other knowledge when knowledge is reused. This relationship means the left side knowledge relies on right side knowledge
Transitivity
A B means knowledge A is dependent on knowledge B. and if we know B C, we can get A C
