The application discloses a cognitive state evaluation and intervention method and
system based on semantic dynamic weighting, an electronic device and a storage medium. The method comprises the following steps: establishing personalized
baseline data; continuously collecting behavior data and storing the behavior data in a ring buffer in real time; when a semantic
label in the interaction is identified, a behavior
data segment time-aligned with the semantic
label is extracted from the ring buffer; behavior features of the behavior
data segment are extracted; according to the semantic
label, a feature weight is found from a preset weight mapping table, and the behavior features are weighted and calculated to obtain a dynamic weighted feature index; based on a classification model, a cognitive state
classification result is obtained according to the dynamic weighted feature index, and a contribution degree is calculated to determine a main attribution feature; finally, based on the semantic label and the main attribution feature, an intervention strategy is matched and executed from a strategy
library. The application realizes accurate attribution, reliable evaluation and accurate intervention of the cognitive state.