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# Step 3 : the model or method choice

The third step of the program is the model choice. Depending on the data type, some models are unavailables.

Figure 3.4: Model choice.

Subsections

- The one parameter logistic model
- The two parameters logistic model
- The three parameters logistic model
- The nominal response model
- The graded response model
- The kernel estimator
- The penalized maximum marginal likelihood estimator