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  2. Uninterpreted function - Wikipedia

    en.wikipedia.org/wiki/Uninterpreted_function

    Function symbols are used, together with constants and variables, to form terms. The theory of uninterpreted functions is also sometimes called the free theory , because it is freely generated, and thus a free object , or the empty theory , being the theory having an empty set of sentences (in analogy to an initial algebra ).

  3. Akaike information criterion - Wikipedia

    en.wikipedia.org/wiki/Akaike_information_criterion

    The likelihood function for the second model thus sets p = q in the above equation; so the second model has one parameter. We then maximize the likelihood functions for the two models (in practice, we maximize the log-likelihood functions); after that, it is easy to calculate the AIC values of the models. We next calculate the relative likelihood.

  4. Loss function - Wikipedia

    en.wikipedia.org/wiki/Loss_function

    In many applications, objective functions, including loss functions as a particular case, are determined by the problem formulation. In other situations, the decision maker’s preference must be elicited and represented by a scalar-valued function (called also utility function) in a form suitable for optimization — the problem that Ragnar Frisch has highlighted in his Nobel Prize lecture. [4]

  5. Search for messages in AOL Mail

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    Go to AOL Mail.; Click on the search box and then click on Advanced.; Choose the section of your account you want to search. At the bottom click Search.

  6. Continuous function - Wikipedia

    en.wikipedia.org/wiki/Continuous_function

    A discontinuous function is a function that is not continuous. Until the 19th century, mathematicians largely relied on intuitive notions of continuity and considered only continuous functions. The epsilon–delta definition of a limit was introduced to formalize the definition of continuity.

  7. Critical point (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Critical_point_(mathematics)

    The value of the function at a critical point is a critical value. [1] More specifically, when dealing with functions of a real variable, a critical point, also known as a stationary point, is a point in the domain of the function where the function derivative is equal to zero (or where the function is not differentiable). [2]

  8. Cumulative distribution function - Wikipedia

    en.wikipedia.org/wiki/Cumulative_distribution...

    Cumulative distribution function for the exponential distribution Cumulative distribution function for the normal distribution. In probability theory and statistics, the cumulative distribution function (CDF) of a real-valued random variable, or just distribution function of , evaluated at , is the probability that will take a value less than or equal to .

  9. Independence of irrelevant alternatives - Wikipedia

    en.wikipedia.org/wiki/Independence_of_irrelevant...

    Independence of irrelevant alternatives (IIA) is an axiom of decision theory which codifies the intuition that a choice between and should not depend on the quality of a third, unrelated outcome . There are several different variations of this axiom, which are generally equivalent under mild conditions.