 In confirmatory SEM, the original nonlinear equality constraints of model parameters are relaxed to an inequality, allowing us to transform the original problem into a convex problem .
<coherence>  In confirmatory SEM, the original nonlinear equality constraints of model parameters are relaxed to an inequality, allowing us to transform the original problem into a convex problem .
 The original nonlinear equality constraints of model parameters are relaxed to an inequality, allowing us to transform the original problem into a convex problem .