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This tag is used to refer to mathematical/probabilistic/statistical modeling questions, usually this tag is used to ask about questions that are related with the mathematical formalism of the model instead of the correctness of a specific model in practice.

4 votes
Accepted

Why should the logarithmic series distribution model the number of "Items" bought?

$\newcommand\la\lambda\newcommand\La\Lambda\newcommand{\Ga}{\Gamma}\newcommand{\R}{\mathbb R}$Some preliminaries: To make it explicit that the distribution of $Y$ depends on the parameter $r$, let $Y_ …
Iosif Pinelis's user avatar
1 vote

Removing outliers from circular average data

Here is a family of alternatives. Let us identify the unit circle $C$ with the interval $[0,2\pi)$. For any two points $a$ and $b$ on the circle, consider the circular distance \begin{equation*} d(a …
Iosif Pinelis's user avatar
1 vote
Accepted

How to value the extent of separation or mixing of point sets in plane?

One can define the degree of separation between the classes of points based on the power means \begin{equation} M_p(X):=\Big(\frac1N\,\sum_1^N x_i^p\Big)^{1/p}, \end{equation} where $X=(x_i)_1^N$ i …
Iosif Pinelis's user avatar