mixture+density

См. также в других словарях:

• Mixture density — In statistics, a mixture density is a probability density function which is a convex combination of other probability density functions.Consider a probability density function p ( x , a ) for a variable x , parameterized by a . That is, for each… …   Wikipedia

• Mixture density — Densité mélange En statistiques, on appelle densité mélange, ou loi mélange une fonction de densité qui est issue d une combinaison linéaire de plusieurs fonctions de densité. En prenant une fonction f(x,θ), densité d une variable aléatoire x… …   Wikipédia en Français

• Mixture (disambiguation) — Mixture may mean: In chemistry: mixture, a combination of two or more chemicals, in which the chemicals retain their identity. In music: mixture (music), a special kind of pipe organ stop which has several pipes to each note In probability and… …   Wikipedia

• Mixture distribution — See also: Mixture model In probability and statistics, a mixture distribution is the probability distribution of a random variable whose values can be interpreted as being derived in a simple way from an underlying set of other random variables.… …   Wikipedia

• Mixture model — See also: Mixture distribution In statistics, a mixture model is a probabilistic model for representing the presence of sub populations within an overall population, without requiring that an observed data set should identify the sub population… …   Wikipedia

• Mixture (probability) — For other uses, see mixture (disambiguation). In probability theory and statistics, a mixture is a combination of two or more probability distributions. The concept arises in two contexts: A mixture defining a new probability distribution from… …   Wikipedia

• Density matrix — Mixed state redirects here. For the psychiatric condition, see Mixed state (psychiatry). In quantum mechanics, a density matrix is a self adjoint (or Hermitian) positive semidefinite matrix (possibly infinite dimensional) of trace one, that… …   Wikipedia

• Density — This article is about mass density. For other uses, see Density (disambiguation). The mass density or density of a material is defined as its mass per unit volume. The symbol most often used for density is ρ (the Greek letter rho). In some cases… …   Wikipedia

• Density of air — The density of air, ρ (Greek: rho) (air density), is the mass per unit volume of Earth s atmosphere, and is a useful value in aeronautics and other sciences. Air density decreases with increasing altitude, as does air pressure. It also changes… …   Wikipedia

• density current — Geol., Oceanog. See turbidity current. * * * Any current in either a liquid or a gas that is kept in motion by the force of gravity acting on small differences in density. A density difference can exist between two fluids or between different… …   Universalium

• Multivariate kernel density estimation — Kernel density estimation is a nonparametric technique for density estimation i.e., estimation of probability density functions, which is one of the fundamental questions in statistics. It can be viewed as a generalisation of histogram density… …   Wikipedia