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  2. List of used book conditions - Wikipedia

    en.wikipedia.org/wiki/List_of_used_book_conditions

    The set of terms below were proposed in 1949 by AB Bookman's Weekly.They were adopted by the bookselling community and are still in use today. [1] [2] [3]As new means that the book is in the state that it should have been in when it left the publisher.

  3. Absolute Category Rating - Wikipedia

    en.wikipedia.org/wiki/Absolute_Category_Rating

    Fair; Poor; Bad; In this method, a single test condition (generally an image or a video sequence) is presented to the viewers once only. They should then give a quality rating on an ACR scale. Test conditions should be presented in a random order per test person.

  4. Well-defined expression - Wikipedia

    en.wikipedia.org/wiki/Well-defined_expression

    In particular, the term well-defined is used with respect to (binary) operations on cosets. In this case, one can view the operation as a function of two variables, and the property of being well-defined is the same as that for a function. For example, addition on the integers modulo some n can be defined naturally in terms of integer addition.

  5. Well-behaved statistic - Wikipedia

    en.wikipedia.org/wiki/Well-behaved_statistic

    In the latter case, the mathematical conditions can be used to derive classes of combinations of distributions with statistics which are well-behaved in each sense. First Definition: The variance of a well-behaved statistical estimator is finite and one condition on its mean is that it is differentiable in the parameter being estimated. [3]

  6. Medical state - Wikipedia

    en.wikipedia.org/wiki/Medical_state

    Definitions vary among hospitals, and it is even possible for a patient to be upgraded or downgraded simply by being moved from one place to another, with no change in actual physical state. Furthermore, medical science is a highly complex discipline dealing with complicated and often overlapping threats to life and well-being.

  7. Reasonable and non-discriminatory licensing - Wikipedia

    en.wikipedia.org/wiki/Reasonable_and_non...

    Reasonable and non-discriminatory (RAND) terms, also known as fair, reasonable, and non-discriminatory (FRAND) terms, denote a voluntary licensing commitment that standards organizations often request from the owner of an intellectual property right (usually a patent) that is, or may become, essential to practice a technical standard. [1]

  8. Pathological (mathematics) - Wikipedia

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

    In algorithmic inference, a well-behaved statistic is monotonic, well-defined, and sufficient. In Bézout's theorem, two polynomials are well-behaved, and thus the formula given by the theorem for the number of their intersections is valid, if their polynomial greatest common divisor is a constant.

  9. Well-formed formula - Wikipedia

    en.wikipedia.org/wiki/Well-formed_formula

    The expression "well-formed formulas" (WFF) also crept into popular culture. WFF is part of an esoteric pun used in the name of the academic game " WFF 'N PROOF : The Game of Modern Logic", by Layman Allen, [ 21 ] developed while he was at Yale Law School (he was later a professor at the University of Michigan ).