Target the controls during the problem solving activity, a process to produce adapted epistemic feedbacks in ill-defined domains. The case of a TEL system for orthopaedic surgery

In this paper we study one feedback process which is adapted to ill-defined domains. Indeed, this process use others aspects than expected solutions to propose a feedback. The feedback process is based in a set of didactical aspects. In particular, the feedback targets the control element of knowledge, i.e. the knowledge that allows to validate one step in the problem solving process. The paper describes the feedback process and its implementation in the framework of one TEL system in orthopedic surgery.