Fig. 1

The derivation of two summarization networks for a CIDO excerpt: a A hierarchy excerpt of 18 process concepts from CIDO. Concepts, denoted by rounded corner boxes, are linked by hierarchical IS-A relationships represented by thin black upward arrows. Root concepts are denoted by a bold frame. Each rectangle indicates a group of concepts with exactly the same set of lateral (non-hierarchical semantic) relationship types (i.e., same structure.) Rectangles are color coded according to the number of lateral relationship types that their concepts have. The names of the lateral relationships are shown in bold inside the colored rectangles. b The area taxonomy summarization network for (a). The nodes, displayed as rectangular boxes filled with solid colors, represent areas and the links connecting area nodes are the hierarchical child-of relationships (shown as thick black upward arrows.) The area node without an emanating child-of link is called a root area node. Area nodes are color-coded in the same way as the colored rectangles in (a) and organized based on the length of their path to the root area node. c The partial-area taxonomy summarization network for (a). The partial-area taxonomy is a refinement of the area taxonomy. The nodes representing partial-areas are illustrated as white boxes within area nodes. A number in () indicates the number of concepts summarized by a partial-area. As in (b), partial-area nodes are connected by hierarchical child-of links shown as thick upward arrows