The invention relates to a knowledge
tracking model research method integrating difficulty
perception and memory enhancement. According to the method, a graph
attention network coding exercise-knowledge point topological relation is constructed, and a difficulty embedding layer and a gating
fusion mechanism are combined to realize joint characterization of difficulty features and a topological structure. The difficulty coefficient is innovatively introduced as a dynamic regulation factor of attention weight in memory network updating, the memory intensity of high-difficulty exercises is enhanced, and the discrimination and
topological consistency of knowledge representation are improved through a multi-task optimization framework integrating graph structure loss and contrast loss. According to the method, challenges of exercise difficulty
perception and knowledge point topological relation modeling are effectively solved, experimental results show that the AUC of the model reaches 0.93 (improved by 7.8% compared with traditional BKT) on an ASSIST2009
data set, the AUC of the model reaches 0.90 (improved by 0.21 compared with KSGAN) on an EdNet
data set, objective indexes and teaching scene
verification show that the method has remarkable advantages in the aspects of knowledge
point correlation modeling and knowledge tracking, and the method is suitable for popularization and application. The method provides an innovative solution for
personalized education, and has technical breakthrough and industrial application values.