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The combined independent pathway/Cholesky (IPC) model structures the genetic variance as an independent pathway model, consisting of a common latent factor A and measurement-specific influences AS, and the residual variance as a Cholesky decomposition model, where the number of latent E factors is the same as the number of observed variables).
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The hybrid independent pathway/Cholesky (IPC) model structures the genetic variance as an independent pathway model, consisting of a common latent factor A and measurement-specific influences AS, and the residual variance as a Cholesky decomposition model, where the number of latent E factors is the same as the number of observed variables).
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Example of a quad-variate IPC model (k=4):
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