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Graphical Chain Models and their Application

  • Iris Pigeot
  • Stephan Klasen
  • Ronja Foraita
Chapter

Abstract

Graphical models are a powerful tool to analyze multivariate data sets that allow to reveal direct and indirect relationships and to visualize the association structure in a graph. As with any statistical analysis, however, the obtained results partly reflect the uncertainty being inherent in any type of data and depend on the selected variables to be included in the analysis, the coding of these variables and the selection strategy used to fit the graphical models to the data. This paper suggests that these issues may be even more crucial for graphical models than for simple regression analyses due to the large number of variables considered which means that a fitted graphical model has to be interpreted with caution. Sensitivity analyses might be recommended to assess the stability of the obtained results. This will be illustrated using a data set on undernutrition in Benin.

Keywords

Graphical Model Markov Property House Quality Association Structure Graphical Chain 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Bremen Institute for Prevention Research and Social Medicine (BIPS)University of BremenBremenGermany
  2. 2.Department of EconomicsUniversity of GöttingenGöttingenGermany

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