Data analysis method and device and storage medium

The embodiment of the invention relates to the technical field of data processing, and discloses a data analysis method, which comprises the following steps of: obtaining sample data related to a project to be analyzed, and dividing the sample data according to different indexes to obtain a plurality of sub-sample data; performing first dimension reduction on each piece of sub-sample data in the plurality of pieces of sub-sample data to obtain a dimension reduction data set of each piece of sub-sample data; and performing secondary dimensionality reduction on all the dimensionality reduction data sets to obtain a global feature data set representing the to-be-analyzed project. The invention provides a data analysis method and device and a storage medium. Data features can be well reserved. 本发明实施例涉及数据处理技术领域，公开了一种数据分析方法，包括：获取与待分析项目相关的样本数据，并将所述样本数据依据不同的指标进行划分得到多个子样本数据；将所述多个子样本数据中的每个所述子样本数据分别进行第一次降维，得到每个所述子样本数据的降维数据集；对所有的所述降维数据集共同进行二次降维，得到表征所述待分析项目的全局特征数据集。本发明中提供一种数据分析方法、装置及存储介质，能够较好地保留数据特征。