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  2. Entropy estimation - Wikipedia

    en.wikipedia.org/wiki/Entropy_estimation

    This is a very rough estimate with high variance, but can be improved, for example by thinking about the space between a given value and the one m away from it, where m is some fixed number. [ 7 ] The probability density estimated in this way can then be used to calculate the entropy estimate, in a similar way to that given above for the ...

  3. Canberra distance - Wikipedia

    en.wikipedia.org/wiki/Canberra_distance

    The Canberra distance is a numerical measure of the distance between pairs of points in a vector space, introduced in 1966 [1] and refined in 1967 [2] by Godfrey N. Lance and William T. Williams. It is a weighted version of L ₁ (Manhattan) distance . [ 3 ]

  4. Psychrometrics - Wikipedia

    en.wikipedia.org/wiki/Psychrometrics

    With the inventions of the hygrometer and thermometer, the theories of combining the two began to emerge during the sixteenth and seventeenth centuries. In 1818, a German inventor, Ernst Ferdinand August (1795-1870), patented the term “psychrometer”, from the Greek language meaning “cold measure”.

  5. Hygrometer - Wikipedia

    en.wikipedia.org/wiki/Hygrometer

    A hygrometer is an instrument which measures the humidity of air or some other gas: that is, how much of it is water vapor. [1] Humidity measurement instruments usually rely on measurements of some other quantities such as temperature, pressure, mass, and mechanical or electrical changes in a substance as moisture is absorbed.

  6. Wasserstein metric - Wikipedia

    en.wikipedia.org/wiki/Wasserstein_metric

    The special case of normal distributions is used in a Frechet inception distance. The Wasserstein metric has a formal link with Procrustes analysis, with application to chirality measures, [6] and to shape analysis. [7] In computational biology, Wasserstein metric can be used to compare between persistence diagrams of cytometry datasets. [8]

  7. Statistical distance - Wikipedia

    en.wikipedia.org/wiki/Statistical_distance

    In statistics, probability theory, and information theory, a statistical distance quantifies the distance between two statistical objects, which can be two random variables, or two probability distributions or samples, or the distance can be between an individual sample point and a population or a wider sample of points.

  8. Similarity measure - Wikipedia

    en.wikipedia.org/wiki/Similarity_measure

    One of the most commonly used similarity measures is the Euclidean distance, which is used in many clustering techniques including K-means clustering and Hierarchical clustering. The Euclidean distance is a measure of the straight-line distance between two points in a high-dimensional space.

  9. Total variation distance of probability measures - Wikipedia

    en.wikipedia.org/wiki/Total_variation_distance...

    The total variation distance (or half the norm) arises as the optimal transportation cost, when the cost function is (,) =, that is, ‖ ‖ = (,) = {(): =, =} = ⁡ [], where the expectation is taken with respect to the probability measure on the space where (,) lives, and the infimum is taken over all such with marginals and , respectively.

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