statistics, a Pólya urn model (also known as a Pólya urn scheme or simply as Pólya's urn), named after George Pólya, is a family of urn models that can be...
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George Pólya (/ˈpoʊljə/; Hungarian: Pólya György [ˈpoːjɒ ˈɟørɟ]; December 13, 1887 – September 7, 1985) was a Hungarian-American mathematician. He was...
19 KB (1,804 words) - 09:27, 29 May 2025
(1977); Urn Models and Their Application: An Approach to Modern Discrete Probability Theory, Wiley ISBN 0-471-44630-0 Mahmoud, Hosam M. (2008); Pólya Urn Models...
6 KB (848 words) - 20:43, 12 June 2025
binomial can also be motivated by an urn model - or more specifically a basic Pólya urn model. Consider an urn initially containing α {\displaystyle...
10 KB (1,541 words) - 10:19, 10 June 2025
Dirichlet negative multinomial distribution (section Dirichlet negative multinomial as a Pólya urn model)
multinomial can also be motivated by an urn model - or more specifically a basic Pólya urn model. Consider an urn initially containing ∑ i = 0 m α i {\displaystyle...
10 KB (1,904 words) - 00:28, 8 March 2025
Beta-binomial distribution (redirect from Beta-Bionomial model)
be motivated via an urn model for positive integer values of α and β, known as the Pólya urn model. Specifically, imagine an urn containing α red balls...
15 KB (2,348 words) - 10:56, 15 June 2025
Dirichlet-multinomial distribution (redirect from Multivariate Pólya distribution)
compound multinomial distribution (DCM) or multivariate Pólya distribution (after George Pólya). It is a compound probability distribution, where a probability...
39 KB (6,950 words) - 22:13, 25 November 2024
etc.) given a fixed number of total occurrences, sampling using a Pólya urn model (in some sense, the "opposite" of sampling without replacement) Categorical...
48 KB (6,688 words) - 17:43, 6 May 2025
way to generate the Beta distribution is by Pólya urn model. According to this method, one start with an "urn" with α "black" balls and β "white" balls...
245 KB (40,559 words) - 20:35, 30 June 2025
variables that are not statistically independent, for example the Pólya urn model. A random variable X has a Bernoulli distribution if Pr(X = 1) = p...
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Computational linguistics (redirect from Computational models of human language)
mappings without needing grammatical structure. Using the Price equation and Pólya urn dynamics, researchers have created a system which not only predicts future...
13 KB (1,171 words) - 21:49, 23 June 2025
its first appearance in 1923 in the celebrated urn model of the Hungarian mathematician György Pólya in 1923. The master equation method, which yields...
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Dirichlet process (section The Pólya urn scheme)
process is as a modified Pólya urn scheme sometimes called the Blackwell–MacQueen sampling scheme. Imagine that we start with an urn filled with α {\displaystyle...
32 KB (4,861 words) - 22:31, 25 January 2024
be a particular case of the Pólya Filter (built around the famous combinatorial scheme known as the Pólya Urn). The Pólya Filter is able to adapt the...
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an urn, then replaced in the urn along with an additional ball of the same color, simulating the probabilistic nature of tag reuse. This simple model, however...
22 KB (2,827 words) - 18:37, 28 May 2025
a year earlier by Fred Hoppe, using an "urn scheme" akin to Pólya's urn. In comparison with Hoppe's urn model, the Chinese restaurant process has the...
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Dirichlet distribution (section Pólya's urn)
Blackwell, David; MacQueen, James B. (1973). "Ferguson distributions via Polya urn schemes". Ann. Stat. 1 (2): 353–355. doi:10.1214/aos/1176342372. A. Gelman;...
49 KB (7,756 words) - 03:37, 9 July 2025
\left\{X_{i}\right\}_{i\in \mathbb {N} }} is an exchangeable sequence. This model is called Polya's urn. Let ( X , Y ) {\displaystyle (X,Y)} have a bivariate normal...
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\end{aligned}}} Pólya's urn contains a number of different-coloured marbles; at each iteration a marble is randomly selected from the urn and replaced with...
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"Functional limit theorems for multitype branching processes and generalized Pólya urns". Stochastic Processes and Their Applications. 110 (2): 177–245. doi:10...
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Multivariate Pareto distribution Multivariate Pólya distribution Multivariate probit – redirects to Multivariate probit model Multivariate random variable Multivariate...
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1925–1932 C. Brian Haselgrove mathematician best known for disproving the Pólya conjecture in 1958 Thomas Hayter, bishop of Norwich 1749–61, bishop of London...
20 KB (1,990 words) - 01:51, 25 June 2025