Pros and cons

Local-fidelity

• Plots are useful in checking whether the model-fit for the instance of interest is unbiased, as in that case the residuals should be small and their distribution should be symmetric around 0.

Local-stability

• Plots may be very helpful to check if the model is *locally additive as in does models CP profiles should be parallel.

• Plots can allow assessment whether the model is locally stable as models CP profiles should be close to each other.

Limitation

• Both plots are quite complex and lack objective measures of the quality of the model-fit.