The invention discloses an
online learning concentration
maintenance system and method based on multi-
modal data
perception, and particularly relates to the technical field of concentration
perception, comprising personalized baseline establishment, baseline dynamic update, multi-
source data acquisition, an attention fusion network, attention loss early warning, concentration attenuation trend evaluation and concentration intervention. According to the method, the personalized initial cognitive
base line of the learner is established, the
base line is dynamically updated, it is ensured that the
base line is always matched with the actual state, the first interaction response data is collected with the synchronous
timestamp, concentration evaluation features are output after deep fusion, the deviation degree with the base line is calculated, and the first early warning target is screened out. According to the method, the concentration degree at the current moment is calculated, and the concentration degree attenuation rate is calculated through the concentration degrees at different time points, so that an intervention mechanism is triggered, the abnormal concentration state relative to the
normal state of the user is effectively recognized, screening of the first early warning target is more accurate and more personalized, and the allocation strategy of computing resources is optimized.