Construction and use of lexicons for textual data mining :
User can :
(1) Use lexicons of terms to analyse textual content
(2) Updating or building lexicons
The user chooses one or more lexicons containing the terms he wants to observe in the texts.
The horizontal axis corresponds to time. The idea is therefore to observe the evolution in a set of dated messages/texts.
Users can update or create their own lexicons for future use.