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2009 Aug 11
0
SEM decomposition of Hessian
...#39;m trying to run an SEM, but I keep getting the following error message. In sem.default(ram = ram, S = S, N = N, param.names = pars, var.names = vars, : Could not compute QR decomposition of Hessian. Optimization probably did not converge. I have 4 latent variables (plant, AMF, abiotic, and soilAgg) with 2 or 4 indicator variables for each latent variable.My model is specified as: > mod.AL.5 <- specify.model() 1: plant -> tnCSG, plantCSG, .6 2: plant -> tnDIV, plantDIV, NA 3: plant -> tnFRL, plantFRL, NA 4: plant -> tnCRL, plantCRL, NA 5: AMF -> tnHL, AMFHL, .6 6: AMF -&...