Authoring Operations Based on Weighted Schemata

Conceptual authoring support enables authors to model the content of their documents, giving them both constructive and analytical aid. One key aspect of the constructive aid are schemata that contain proven structures that the author may instantiate in her document. This paper presents operations offered in an authoring system partially derived from extended schema definitions. The author may instantiate a schema, expanding an existing concept. In contrast with classical CG, the join with the host graph is not maximal, but determined by the author. Generic commands allow concepts and relations to be created, edited and deleted. Analytical aid based on schemata checks whether a schema instance has been severely mutilated after instantiation. In order to do this, schema elements (concepts and relations) are given weight parameters. Removal of schema instance elements triggers warnings of varying severity and with appropriate fixing operations.