Questions tagged [nested-models]

One model is "nested" in another if it is a constrained version of it. Nested models can be compared with a likelihood-ratio test. Use this tag for questions about comparing non-nested models too.

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How to determine if a model is nested?

I have two models for prospect theory utility functions and want to compare their fits. However, I'm not sure if the models are nested or not. The first model is given by: $U(x) = x^α$ for $x ≥ 0$ and $U(y) = −λ|y|^α$ for $y < 0$ The second model…
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If nested models are a restricted version of some model, how would i call it's extended versions?

Let's say I have a model like A = α0 + α1*B + α2*C + α3*D + ϵ (Model 1) Then I can estimate it's nested models A = α0 + α1*B + α2*C + ϵ (Model 2) or, say, A = α0 + α1*B + ϵ (Model 3) If models 2 and 3 are nested models of model 1, what is model…
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