previous up next
Précédent : Références Remonter : Projet ACACIA


The ACACIA project is a multidisciplinary project that aims at offering models, methods and tools in order to help the knowledge engineer to acquire (i.e. elicit and model) knowledge from multiple expertise sources (experts or documents). The purpose is to build a corporate memory, a knowledge server or a knowledge-based system.

In 1996, we extended CGKAT, a tool allowing to build conceptual graphs from structured documents; it manages hypertext links between elements of documents and a base of conceptual graphs; it allows the user to search information in the documents and knowledge in the base, in answer to the user's requests. CGKAT also offers a request language based on conceptual graphs. We exploit graph grammars, in order to enhance reasoning capabilities on conceptual graphs.

In 1996, we extended COKACE, a tool built above CENTAUR and dedicated to CML (Conceptual Modelling Language), the language offered by COMMONKADS to describe expertise models. We integrated in COKACE the capability to modularize a complex expertise model. It is also possible to build a Web-accessible knowledge server with COKACE. COKACE is applied to a library of conflict management models and to a knowledge server on breast cancer prognosis and therapy. Last, we built a translator of CML expertise models into conceptual graphs, which allows to connect COKACE and CGKAT.

For knowledge acquisition from multiple experts, we implemented our techniques of comparison of conceptual graphs and we studied the expression of viewpoints in conceptual graphs. We also extended COMMONKADS for concurrent engineeering task, in particular, we developed a library of conflict management models for this task. We developed a prototype CREOPS2 for communication of design propositions between designers (in the framework of a support to conflict management in concurrent design).

Last, we studied explanatory interaction.