In the next round of experiments, we plan to go from term analysis to topic analysis in order to free ourselves from the need to have an explicit term associated to a topic to be able to detect its apparition.
we will be able to more emphasis on investigating the emergence of new topics by using Latent Dirichlet Allocation [Blei et al 2003] and in particular its supervised variant [Blei et al 2007], and to study topic dynamics [Blei et al 2006].