▍1. 共现矩阵
说明: 将高维数据组转换为二维数据组,方便数据处理工作人员的数据分析,并包含自然语言处理(The multi-dimensional co-occurrence matrix is transformed into two-dimensional array form, and the high-dimensional data group is transformed into two-dimensional data group, which is convenient for data processing staff to analyze data, and includes natural language processing)