Time-based directional attention recommendation system and method

The invention provides a time-based directional attention recommendation system and method. The time-based directional attention recommendation system provided by the invention comprises a user intention characterization module, a user dynamic preference characterization module and a preference degree-based recommendation module, the user intention characterization module obtains an accurate user interaction overall intention characterization vector with noise interference resistance by using an attention mechanism, and outputs the vector to the user dynamic preference characterization module; the user preference characterization module obtains a current dynamic preference characterization vector of an interactive user by using a time-based multi-dimensional attention mechanism, and outputs the current dynamic preference characterization vector to the preference degree-based recommendation module; and the preference degree-based recommendation module outputs a project preference degree ranking corresponding t