The invention discloses a digital intelligent teaching recording and
broadcasting system and method, and relates to the technical field of data
encryption, and the method comprises the steps: collecting teaching videos and audios of a teacher through a high-definition camera and an audio device, carrying out the preprocessing, obtaining the course content, recognizing the key information of the course content through a
natural language processing NLP and
computer vision technology, and carrying out the recording and
broadcasting. The method comprises the following steps: segmenting a video into single knowledge point fragments, performing classified storage, forming a
learning resource library, collecting basic information and learning
habit data of students, constructing a user portrait, matching learning resources, extracting the learning
habit data in the user portrait, performing
feature extraction, and obtaining a comprehensive
feature vector; constructing a learning state evaluation model by using a
convolutional neural network to comprehensively analyze the comprehensive
feature vector to obtain a learning state comprehensive
score, formulating a playing strategy according to the learning state comprehensive
score and matched learning resources, regularly testing knowledge points of students, evaluating the mastering degree of the students, and updating a user portrait according to a result.