1. A system for predictive analysis of digital data time flows associated with text information ( 18 ), the system comprising means ( 12 ) for automatically predicting values ( 24 ) of a digital data time flow on the basis of past values ( 22 ) of said flow, the system being characterized in that it includes means ( 14 ) for analyzing text information ( 18 ) to provide the prediction means ( 12 ) with a weighted concept vector ( 20 ) associated with the past values ( 22 ) of the digital data time flow.