This subproject contains the contributions from WP2. It is divided into the following subprojects:
Concerning tasks T2.1 (Storage and Data Characterization) and T2.2 (Information Storage).
Concerning tasks T2.3 (Multi-modal user feedback analysis), T2.4 (Automatic identification of user sessions for personalized recommendation) and T2.5 (Analysis of user feedback together with the contextual information).