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I need to compare Two-step clustering with latent class analysis. As LCA is not possible in SPSS I did it in R, however, 2-step clustering in R is quite challenging, so I did it in SPSS. To compare it I need different measures including the values of log-likelihood. The question is can I obtain it somehow from the two-cluster analysis in SPSS?

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  • $\begingroup$ See this answer which explains how BIC can be computed as a clustering criterion. It uses the same formula of the LL as the TwoStep cluster analysis in SPSS $\endgroup$ – ttnphns Jul 25 '20 at 20:28
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SPSS Statistics TWOSTEP CLUSTER will not directly output a log-likelihood, only AIC or BIC when doing automatic selection of the number of clusters, so you'd have to dig into the formulas in the algorithms in order to manually calculate it.

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