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  2. Bradley–Terry model - Wikipedia

    en.wikipedia.org/wiki/Bradley–Terry_model

    The model is named after Ralph A. Bradley and Milton E. Terry, [3] who presented it in 1952, [4] although it had already been studied by Ernst Zermelo in the 1920s. [1] [5] [6] Applications of the model include the ranking of competitors in sports, chess, and other competitions, [7] the ranking of products in paired comparison surveys of consumer choice, analysis of dominance hierarchies ...

  3. Prediction by partial matching - Wikipedia

    en.wikipedia.org/wiki/Prediction_by_partial_matching

    Prediction by partial matching (PPM) is an adaptive statistical data compression technique based on context modeling and prediction. PPM models use a set of previous symbols in the uncompressed symbol stream to predict the next symbol in the stream. PPM algorithms can also be used to cluster data into predicted groupings in cluster analysis.

  4. Set identification - Wikipedia

    en.wikipedia.org/wiki/Set_identification

    In statistics and econometrics, set identification (or partial identification) extends the concept of identifiability (or "point identification") in statistical models to environments where the model and the distribution of observable variables are not sufficient to determine a unique value for the model parameters, but instead constrain the parameters to lie in a strict subset of the ...

  5. Partial least squares path modeling - Wikipedia

    en.wikipedia.org/wiki/Partial_least_squares_path...

    The partial least squares path modeling or partial least squares structural equation modeling (PLS-PM, PLS-SEM) [1] [2] [3] is a method for structural equation modeling that allows estimation of complex cause-effect relationships in path models with latent variables.

  6. Wallace tree - Wikipedia

    en.wikipedia.org/wiki/Wallace_tree

    The downside of the Wallace tree, compared to naive addition of partial products, is its much higher gate count. These computations only consider gate delays and don't deal with wire delays, which can also be very substantial. The Wallace tree can be also represented by a tree of 3/2 or 4/2 adders. It is sometimes combined with Booth encoding ...

  7. Strategic business unit - Wikipedia

    en.wikipedia.org/wiki/Strategic_business_unit

    The precise location is determined by the two axes, market Growth as the Y axis, Market Share as the X axis. Alternatively, changes over or two years can be shown by shading or other differences in design.xx. [3] Star products currently have high growth and high market-share. The Question Mark identifies products with low share but high growth.

  8. Partial likelihood methods for panel data - Wikipedia

    en.wikipedia.org/wiki/Partial_likelihood_methods...

    Partial (pooled) likelihood estimation for panel data is a quasi-maximum likelihood method for panel analysis that assumes that density of given is correctly specified for each time period but it allows for misspecification in the conditional density of = (, …,) given = (, …,).

  9. Summation by parts - Wikipedia

    en.wikipedia.org/wiki/Summation_by_parts

    [3] [4] The boundary conditions are usually imposed by the Simultaneous-Approximation-Term (SAT) technique. [5] The combination of SBP-SAT is a powerful framework for boundary treatment. The method is preferred for well-proven stability for long-time simulation, and high order of accuracy.