What are the methods of big data preprocessing?

Is the data cleaning program performed by filling in missing values, smoothing noise data, identifying or deleting abnormal values, and resolving inconsistencies? Clean up the data? .

2. Data integration

The data integration process integrates data from multiple data sources.

3. Data protocol

Data specification is to get a simplified representation of the data set. Data specifications include size specifications and numerical specifications.

4. Data conversion

By changing the methods of standardization, data discretization and concept layering, data mining can be carried out at multiple abstract levels. Data conversion operation is an additional preprocessing process to improve the effect of data mining.