Heterogeneous variances in Gaussian linear mixed models

Variances heterogenes en modele lineaire mixte gaussien. Cet article fait le point sur un certain nombre de problemes qui surviennent lors de l'estimation de variances heterogenes dans des modeles lineaires mixtes gaussiens. On considere le cas d'un ou plusieurs facteurs d'heteroscedasticite. On developpe des algorithmes EM-REML et bayesiens. On propose egalement un modele lineaire mixte structurel des logarithmes des variances qui permet de mettre en evidence des sources significatives de variation des variances residuelles et genetiques et d'apprehender leur importance et leur mode d'action.

• Publication year

  1995

• Venue

  Genetics Selection Evolution

• Publication date

  1995-06-15

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1186/1297-9686-27-3-211PMCID 2708244
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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