Abstract This paper addresses the teaching development of classical dance and proposes the use of modern teaching technology to assist the teaching of classical dance. It integrates the creative stimulation of classical dance teaching with the concept of multi-cloud culture and proposes the hypothesis of optimizing the teaching effect of classical dance with the concept of multi-culture. Utilizing the online teaching platform for retrieval of multiple dance resources, the RANKBOOST algorithm is applied to accelerate the retrieval time of dance resources. The dance resources are pre-processed with dance posture data converted into BVH file form, human posture features are calculated, 3D-SIFT technology is applied to extract the human posture features of dance movements, and similarity calculation is performed to obtain dance movement recognition and dance posture analysis. Test the performance of an online teaching platform and analyze the parameter values of the RANKBOOST algorithm. Design the overall framework of the classical dance teaching experiment, subdividing the teaching purpose, teaching content, teaching time, etc., and statistically compare the results of the teaching experiment. The classical dance online teaching platform is able to load students’ learning tasks when the concurrency reaches the maximum value. Through comparative analysis, it can be seen that the classical dance teaching (online dance analysis) method proposed in this paper based on the concept of multiculturalism can significantly improve students’ classical dance assessment results and effectively achieve the teaching objectives.
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