Information about Exponential Power Distribution
The exponential power distribution, also known as the generalized error distribution, takes a scale parameter a and exponent (or shape parameter) b. The probability density is
For b = 1 this reduces to the Laplace distribution. For b = 2 it has the same form as a Gaussian distribution, but with
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For b = 1 this reduces to the Laplace distribution. For b = 2 it has the same form as a Gaussian distribution, but with
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In probability theory and statistics, a scale parameter is a special kind of numerical parameter of a parametric family of probability distributions.
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Definition
If a family of probability densities with parameter s is of the form..... Click the link for more information.
In probability theory and statistics, a shape parameter is a special kind of numerical parameter of a parametric family of probability distributions.
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Definition
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Laplace distribution is a continuous probability distribution named after Pierre-Simon Laplace. It is also known as the double exponential distribution, because it can be thought of as two exponential distributions (with an additional location parameter) spliced together
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normal distribution, also called the Gaussian distribution, is an important family of continuous probability distributions, applicable in many fields. Each member of the family may be defined by two parameters, location and scale: the mean ("average",
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probability distribution that assigns a probability to every subset (more precisely every measurable subset) of its state space in such a way that the probability axioms are satisfied.
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In statistics, in univariate data, each data point has only one scalar component. Or, when the statistical technique to be used, it contains only one dependent variable. The more general case is multivariate.
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A multivariate random variable or random vector is a vector X = (X1, ..., Xn) whose components are scalar-valued random variables on the same probability space (Ω, P).
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Bernoulli distribution, named after Swiss scientist Jakob Bernoulli, is a discrete probability distribution, which takes value 1 with success probability and value 0 with failure probability .
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binomial distribution is the discrete probability distribution of the number of successes in a sequence of n independent yes/no experiments, each of which yields success with probability p.
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Boltzmann distribution predicts the distribution function for the fractional number of particles Ni / N occupying a set of states i which each respectively possess energy Ei:
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A categorical distribution is the most general distribution whose sample space is the set .
It is the generalization of the Bernoulli distribution for a categorical random variable.
It should not be confused with the multinomial distribution.
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It is the generalization of the Bernoulli distribution for a categorical random variable.
It should not be confused with the multinomial distribution.
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In probability theory, a compound Poisson distribution is the probability distribution of a "Poisson-distributed number" of independent identically-distributed random variables. More precisely, suppose
i.e.
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i.e.
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degenerate distribution is the probability distribution of a discrete random variable whose support consists of only one value. Examples include a two-headed coin and rolling a die whose sides all show the same number.
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Gauss-Kuzmin distribution gives the probability distribution of the occurrence of a given integer in the continued fraction expansion of an arbitrary real number. The distribution is named after Carl Friedrich Gauss, who first conjectured and studied the distribution around 1800,
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geometric distribution is either of two discrete probability distributions:
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- the probability distribution of the number X of Bernoulli trials needed to get one success, supported on the set , or
- the probability distribution of the number Y
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hypergeometric distribution is a discrete probability distribution that describes the number of successes in a sequence of n draws from a finite population without replacement.
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logarithmic distribution (also known as the logarithmic series distribution) is a discrete probability distribution derived from the Maclaurin series expansion
From this we obtain the identity
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From this we obtain the identity
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negative binomial distribution is a discrete probability distribution. The Pascal distribution and the Polya distribution are special cases of the negative binomial.
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In the parabolic fractal distribution, the logarithm of the frequency or size of entities in a population is a quadratic polynomial of the logarithm of the rank. This can markedly improve the fit over a simple power-law relationship (see external link below).
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Poisson distribution is a discrete probability distribution that expresses the probability of a number of events occurring in a fixed period of time if these events occur with a known average rate, and are independent of the time since the last event.
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Rademacher distribution, named after Hans Rademacher is a discrete probability distribution which has a 50% chance for either 1 or -1. The probability mass function of this distribution is
The Rademacher distribution has been used in bootstrapping.
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The Rademacher distribution has been used in bootstrapping.
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Skellam distribution is the discrete probability distribution of the difference of two correlated or uncorrelated random variables and having Poisson distributions with different expected values and .
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discrete uniform distribution is a discrete probability distribution that can be characterized by saying that all values of a finite set of possible values are equally probable.
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Yule-Simon distribution is a discrete probability distribution named after Udny Yule and Herbert Simon. Simon originally called it the Yule distribution.
The probability mass function of the Yule-Simon(ρ) distribution is
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The probability mass function of the Yule-Simon(ρ) distribution is
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zeta distribution is a discrete probability distribution. If X is a zeta-distributed random variable with parameter s, then the probability that X takes the integer value k is given by the probability mass function
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Zipf's law, publicized by Harvard linguist George Kingsley Zipf (IPA [zɪf]), stated that, in a corpus of natural language utterances, the frequency of any word is roughly inversely proportional to its rank in the frequency
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Zipf-Mandelbrot law is a discrete probability distribution. Also known as the Pareto-Zipf law, it is a power-law distribution on ranked data, named after the Harvard linguistics professor George Kingsley Zipf (1902-1950) who suggested a simpler distribution called Zipf's law, and
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In population genetics, Ewens's sampling formula, introduced by Warren Ewens, states that under certain conditions (specified below), if a random sample of n gametes is taken from a population and classified according to the gene at a particular locus then the probability
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multinomial distribution is a generalization of the binomial distribution.
The binomial distribution is the probability distribution of the number of "successes" in n independent Bernoulli trials, with the same probability of "success" on each trial.
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The binomial distribution is the probability distribution of the number of "successes" in n independent Bernoulli trials, with the same probability of "success" on each trial.
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The multivariate Polya distribution, also called the Dirichlet compound multinomial distribution, is a compound probability distribution, where a probability vector p is drawn from a Dirichlet distribution with parameter vector , and a set of discrete samples x
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