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Practical Predictive Analytics by Ralph Winters

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CRISP-DM and SEMMA chart

If you examine the differences between SEMMA and CRISP-DM in the following chart, you will notice that steps 2-5 are similar in approach.

Note that SEMMA adds sampling as an initial phase and CRISP-DM begins with business understanding and ends with model deployment.

Step #

CRISP-DM

SEMMA

1

Business understanding

Sample

2

Data understanding

Explore

3

Data preparation

Modify

4

Modeling

Model

5

Evaluation

Assess

6

Deployment

 

Critical to both processes is the concept of visualizing and communicating results to stakeholders. Note that visualization is not considered a separate step. Always try to include a presentation layer (plots, charts, and visualizations) ...

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