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I want to estimate a GMM based on a LGCM with freely estimated factor loadings and autocorrelated residuals. If I extend this model to a mixture model with 2 classes, and only specify an %overall% model, I have no problems. However, as soon as I try to free any additional parameters across classes (such as the factor loadings), I get the following error: *** ERROR in MODEL CONSTRAINT command A parameter label or the constant 0 must appear on the left-hand side of a MODEL CONSTRAINT statement. Problem with the following: BMI258* = Ideally I'd like to look at a mixture model where every parameter if freely estimated between classes. Any ideas on where I'm going wrong? Many thanks. bmi0-bmi24 (resvar1); bmi0-bmi22 PWITH bmi2-bmi24 (p1); bmi0-bmi20 PWITH bmi4-bmi24 (p2); bmi0-bmi18 PWITH bmi6-bmi24 (p3); bmi138-bmi258 (resvar2); bmi138-bmi226 PWITH bmi192-bmi258 (p4); bmi138-bmi192 PWITH bmi226-bmi258 (p5); bmi138 PWITH bmi258 (p6); MODEL CONSTRAINT: NEW (corr1); p1 = resvar1*corr1; p2 = resvar1*corr1**2; p3 = resvar1*corr1**3; MODEL CONSTRAINT: NEW (corr2); p4 = resvar2*corr2; p5 = resvar2*corr2**2; p6 = resvar2*corr2**3; |
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