Résumé en anglais

The specification of a decision making problem includes the agent's preferences on the available alternatives. We have to distinguish between preference modeling, which consists of choosing a mathematical model for preferences and studying its properties, from preference representation (or specification), which consists of choosing a language for expressing, storing and processing an agent's preferences efficiently. A third important problem is preference elicitation, which consists of interacting with the agent in order to acquire enough information about their preferences.