Along with human resources management, the management of intellectual resources has also become established in the business world. Awareness of the value of in-house knowledge as an intangible asset is driving company directors to capitalize on this knowledge. Today, the transfer of knowledge between generations is bringing in knowledge management methods developed in the 1990s. Because experts are required to transfer their knowledge, they need to look back into how that knowledge was classified over time. If experts are considered as protagonists in their own knowledge, then the question arises of the use of their personalities or traits of character to facilitate the transfer. Through a review of some of the principles of knowledge formalization and the models cited, this article discusses the question of experts as classifiers of their own knowledge.