The invention discloses a multi-
modal standardized
knowledge graph automatic generation method and
system, particularly relates to the technical field of education
knowledge graph automatic generation, and is used for solving the problem of inaccurate
knowledge graph generation. According to the method, through preprocessing and
feature selection of multi-
modal data, text word segmentation, video
key frame extraction and image graying, differences between different
modal data are eliminated after
standardization, then key features of all modals are screened through
information gain, normalization
processing is carried out, it is ensured that feature vectors have a unified
numerical range, and the feature vectors are subjected to multi-modal
feature extraction. The method lays a foundation for subsequent
feature fusion and knowledge
graph generation, calculates the weight through a modal reliability function, considers the importance of each modal in the
feature fusion process, generates a unified
feature vector, avoids hierarchical conflicts, and automatically updates and dynamically adjusts knowledge points and hierarchical labels thereof according to the dynamic change of data. And the intellectualization, the self-adaptability and the
knowledge management efficiency of the graph are improved.