Data Understanding Overview

The data understanding phase of CRISP-DM involves taking a closer look at the data available for mining. This step is critical in avoiding unexpected problems during the next phase--data preparation--which is typically the longest part of a project.

Data understanding involves accessing the data and exploring it using tables and graphics that can be organized in IBM® SPSS® Modeler using the CRISP-DM project tool. This enables you to determine the quality of the data and describe the results of these steps in the project documentation.