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  2. Mixture distribution - Wikipedia

    en.wikipedia.org/wiki/Mixture_distribution

    In probability and statistics, a mixture distribution is the probability distribution of a random variable that is derived from a collection of other random variables as follows: first, a random variable is selected by chance from the collection according to given probabilities of selection, and then the value of the selected random variable is realized.

  3. Compound probability distribution - Wikipedia

    en.wikipedia.org/wiki/Compound_probability...

    In probability and statistics, a compound probability distribution (also known as a mixture distribution or contagious distribution) is the probability distribution that results from assuming that a random variable is distributed according to some parametrized distribution, with (some of) the parameters of that distribution themselves being random variables.

  4. Flux balance analysis - Wikipedia

    en.wikipedia.org/wiki/Flux_balance_analysis

    The human microbiota is a complex system with as many as 400 trillion microbes and bacteria interacting with each other and the host. To understand key factors in this system; a multi-scale, dynamic flux-balance analysis is proposed as FBA is classified as less computationally intensive. [12]

  5. Mixture model - Wikipedia

    en.wikipedia.org/wiki/Mixture_model

    A typical finite-dimensional mixture model is a hierarchical model consisting of the following components: . N random variables that are observed, each distributed according to a mixture of K components, with the components belonging to the same parametric family of distributions (e.g., all normal, all Zipfian, etc.) but with different parameters

  6. Mixture (probability) - Wikipedia

    en.wikipedia.org/wiki/Mixture_(probability)

    In probability theory and statistics, a mixture is a probabilistic combination of two or more probability distributions. [1] The concept arises mostly in two contexts: A mixture defining a new probability distribution from some existing ones, as in a mixture distribution or a compound distribution. Here a major problem often is to derive the ...

  7. Hurdle model - Wikipedia

    en.wikipedia.org/wiki/Hurdle_model

    Hurdle models differ from zero-inflated models in that zero-inflated models model the zeros using a two-component mixture model. With a mixture model, the probability of the variable being zero is determined by both the main distribution function p ( x = 0 ) {\displaystyle p(x=0)} and the mixture weight π {\displaystyle \pi } .

  8. Linkage disequilibrium - Wikipedia

    en.wikipedia.org/wiki/Linkage_disequilibrium

    Consider an allele a at the A locus with frequency p a in a particular population. At a linked B locus, the frequency of the allele b is p b.The question is, what is the expected frequency p ab of the allele pair, or ’haplotype’, ab?

  9. Mass balance - Wikipedia

    en.wikipedia.org/wiki/Mass_balance

    Strictly speaking the above equation holds also for systems with chemical reactions if the terms in the balance equation are taken to refer to total mass, i.e. the sum of all the chemical species of the system. In the absence of a chemical reaction the amount of any chemical species flowing in and out will be the same; this gives rise to an ...