Scientific papers published in the proceedings of EGC, conference that is held annually since 2001, constitute the richness of these events that put in scene the best of the French research focusing on knowledge extraction and management. In this paper we analyzed the scientific papers of the last 12 editions of EGC in order to highlight the main research subjects that were addresses. First, we detected common terms and specificities between the articles of different editions of the conference and also differences that could appear between consecutive editions. Then we studied how articles can be grouped into separate topics, that we automatically detected, and how these topics evolved since the conference beginnings until 2015.