Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On mean and/or variance mixtures of normal distributions   Parametric distributions are an important part of statistics. There is now a
voluminous literature on different fascinating formulations of flexible
distributions. We present a selective and brief overview of a small subset of
these distributions, focusing on those that are obtained by scaling the mean
and/or covariance matrix of the (multivariate) normal distribution with some
scaling variable(s). Namely, we consider the families of mean mixture, variance
mixture, and mean-variance mixture of normal distributions. Its basic
properties, some notable special/limiting cases, and parameter estimation
methods are also described.

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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
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The categories of this paper are: econ
1
The categories of this paper are: cs
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The categories of this paper are: astro-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc