Data preparation steps are steps that take a long time because the models do da da mine still yields the correct tha lap. Depending on the quality of the data used, that is, if the data is not valid. The error is surely reflects the results that might make the interpretation of the results obtained as well as tolerance by preparing them can be divided into 3 phases:Bullet 2 Select data (Data Selection), we should set a goal before you that we will make an analysis of what, and then select only the data that is related to what we will be doing the analysis.Bullet 2 to refine data (Data Cleaning), in some cases, you might have data that is not valid. Due to problems during storage, such as filling in missing? Complete duplication? In this step we will filter the data that is invalid or redundant or repair may result in missing data with certain methods, such as considering the average of most data, etc.Data format conversion, 2 bullet (Data Transformation) is the process of preparing data in a format that is ready to be used in the analysis of algorithms on da main selected slides.
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