A Knowledge Based Tool for the Incremental Construction, Validation and Refinement of Large Knowledge Bases

. We present an assistance tool for the incremental construction of knowledge bases. First it divides the construction process into many phases. Each one is characterised by particular functionalities aiming at structuring treatments and checks in the most adaptive way, according to the needs of the expert, and to the contents of the base. This will avoid accomplishing non adapted checks that might generate invalid or redundant results . Moreover and throughout the different treatments and checks applied on each chunk of knowledge, the system generates a large number of metaattributes. Being semantically related to the domain or specific to the needs of the checks, they allow the system to enhance the information that it possess about the knowledge contained in the base. This leads to a metaknowledge base that speeds up future process. For example, some significant describing properties concerning concepts and rules will be used to considerably reduce the combinatory. Others, consistin..