An engineering data prediction processing method based on data mining comprises the steps of initialization setting, establishment of a sub-target data cluster, preprocessing to form an effective target data cluster, clustering processing and analysis, similar data association processing and establishment of an intra-data priority number set, setting of a class encryption ID and a priority numberset encryption ID which are associated, class data transmission, data verification, data mining processing and the like. According to the invention, the processing efficiency and speed of data prediction can be improved, and a targeted data encryption mode is provided, so that the data security is high.

Data encryption secure transmission method

The invention is applicable to the field of data encryption. Provided are a data encryption method and a device thereof supporting a keyword sorting search technique of fuzzy matching and semantic approximation matching, and a data encryption retrieval system, which have complete functions and high efficiency. The initializing step of the method comprises the following steps of: extracting a keyword set from data and establishing an original keyword dictionary, and then establishing a corresponding keyword stem dictionary and a keyword synonym dictionary, and establishing a word vector for fuzzy matching of the keywords in the original keyword dictionary; The secret key generating step of the method comprises the following steps of: generating a corresponding secret key according to a plurality of dictionaries; The index building step comprises: according to dictionary and mapping relation, index vector is built for each document, and clustering is carried out; the data encryption stepcomprises: encrypting the index vector.

Zhang Wenhao

Papers

Data encryption method and device thereof, and data encryption retrieval system