  This paper presents a sociocultural knowledge ontology (OntoSOC) modeling
approach. OntoSOC modeling approach is based on Engestrom Human Activity Theory
(HAT). That Theory allowed us to identify fundamental concepts and
relationships between them. The top-down precess has been used to define
differents sub-concepts. The modeled vocabulary permits us to organise data, to
facilitate information retrieval by introducing a semantic layer in social web
platform architecture, we project to implement. This platform can be considered
as a collective memory and Participative and Distributed Information System
(PDIS) which will allow Cameroonian communities to share an co-construct
knowledge on permanent organized activities.
