Hedgehogs, hedgehog, 17 species of hedgehog in five genera. A hedgehog is any of the spiny mammals of the subfamily Erinaceinae, which is in order Erinaceomorpha. There are found in Europe, Asia, Africa and New Zealand (by introduction). There are no hedgehogs native to Australia, nor the Americas.
Simulated Evolution is the umbrella name for a set of projects focused on using agent-based modeling to explore and learn about evolutionary processes.
Analyzing Data: Latent Class and Other Mixture Models. Mixture models are measurement models that use observed variables as indicators of one or more nominal latent variables (i.e. categorical variables).One way to think about mixture models that one is attempting to identify subsets or classes of observations within the observed data.The latent variable (classes) is categorical, but the indicators may be either categorical or continuous.n other words, the estimated probability of a student in class 1 taking honors math is about .89. Above we estimated a specific case of a mixture model, a latent class analysis, in which all of the indicators are categorical, in this example the model contains both categorical and continuous indicators.