[ABE-L] Fwd: Palestra John Hinde, dia 4 de abril de 2019 (apoio FAPESP), 14h

[Clarice Garcia Borges Demetrio]

Local: Departamento de Ciências Exatas, ESALQ/USP, Piracicaba, SP
Data: 4 de abril, 14h
Apoio: FAPESP



*Generic Software Tools for Model Checking and Display*

*John Hinde*

*NUI Galway*



Open systems, like R, allow the rapid dissemination of new methodology
through user-contributed packages. There has been an explosion of these,
however, the focus is typically on new models, methods of analysis, etc,
rather than on generic tools that may enhance other aspects of the
modelling process. Here, we consider from the point of view of both model
checking and model display/interrogation.

We illustrate the first with the hnp package for model checking using
half-normal plots of diagnostic quantities, eg residuals. This package can
be used with many common univariate response model objects and can easily
be extended to any new class. We also consider the extension of these ideas
to bivariate response models.

Nomograms (graphical tools for complex expressions) have received renewed
interest in recent years as a form of visualisation tool. The dynom package
is an example of a Shiny app for model display using dynamic nomograms. We
illustrate its use and discuss the general approach and its role as a
communication and dissemination tool.
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