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estimation of expectation

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  • Estimation theory — is a branch of statistics and signal processing that deals with estimating the values of parameters based on measured/empirical data. The parameters describe an underlying physical setting in such a way that the value of the parameters affects… …   Wikipedia

  • Expectation-maximization algorithm — An expectation maximization (EM) algorithm is used in statistics for finding maximum likelihood estimates of parameters in probabilistic models, where the model depends on unobserved latent variables. EM alternates between performing an… …   Wikipedia

  • Expectation-Maximization — Algorithme espérance maximisation L algorithme espérance maximisation (en anglais Expectation maximisation algorithm, souvent abrégé EM), proposé par Dempster et al. (1977), est une classe d algorithmes qui permettent de trouver le maximum de… …   Wikipédia en Français

  • Expectation-Maximization-Algorithmus — Der Expectation Maximization Algorithmus (kurz EM Algorithmus, selten auch Estimation Maximization Algorithmus) ist ein Algorithmus der mathematischen Statistik. Der EM Algorithmus wird vorrangig zur Ballungsanalyse verwendet (Siehe hierzu den… …   Deutsch Wikipedia

  • Rasch model estimation — Various techniques are employed in order to estimate parameters of the Rasch model from matrices of response data. The most common approaches are methods of maximum likelihood estimation, such as joint and conditional maximum likelihood… …   Wikipedia

  • Maximum a posteriori estimation — In Bayesian statistics, a maximum a posteriori probability (MAP) estimate is a mode of the posterior distribution. The MAP can be used to obtain a point estimate of an unobserved quantity on the basis of empirical data. It is closely related to… …   Wikipedia

  • Point estimation — In statistics, point estimation involves the use of sample data to calculate a single value (known as a statistic) which is to serve as a best guess for an unknown (fixed or random) population parameter.More formally, it is the application of a… …   Wikipedia

  • point estimation — Statistics. the process of determining a single estimated value (point estimate) of a parameter of a given population. Cf. interval estimation. [1960 65] * * * ▪ statistics       in statistics, the process of finding an approximate value of some… …   Universalium

  • List of thought processes — This is a list of thinking styles, methods of thinking (thinking skills), and types of thought. See also the List of thinking related topic lists, the List of philosophies and the .* Abductive reasoning * Abstract thinking * Adaptation * Analogy… …   Wikipedia

  • calculation — Synonyms and related words: adding, aforethought, amount, answer, appraisal, appraisement, approach, approximation, arithmetic, arrangement, assessment, assize, assizement, attack, blueprint, blueprinting, calculatedness, calculus, canniness,… …   Moby Thesaurus

  • 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

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