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  2. dplyr - Wikipedia

    en.wikipedia.org/wiki/Dplyr

    dplyr is an R package whose set of functions are designed to enable dataframe (a spreadsheet-like data structure) manipulation in an intuitive, user-friendly way. It is one of the core packages of the popular tidyverse set of packages in the R programming language. [1]

  3. Intraclass correlation - Wikipedia

    en.wikipedia.org/wiki/Intraclass_correlation

    ICC is supported in the open source software package R (using the function "icc" with the packages psy or irr, or via the function "ICC" in the package psych.) The rptR package [13] provides methods for the estimation of ICC and repeatabilities for Gaussian, binomial and Poisson distributed data in a mixed-model framework. Notably, the package ...

  4. R package - Wikipedia

    en.wikipedia.org/wiki/R_package

    Compared to libraries in other programming languages, R packages must conform to a relatively strict specification. [3] The Writing R Extensions manual [7] specifies a standard directory structure for R source code, data, documentation, and package metadata, which enables them to be installed and loaded using R's in-built package management ...

  5. R (programming language) - Wikipedia

    en.wikipedia.org/wiki/R_(programming_language)

    R is a programming language for statistical computing and data visualization. It has been adopted in the fields of data mining, bioinformatics and data analysis. [9] The core R language is augmented by a large number of extension packages, containing reusable code, documentation, and sample data. R software is open-source and free software.

  6. Group ring - Wikipedia

    en.wikipedia.org/wiki/Group_ring

    Using 1 to denote the multiplicative identity of the ring R, and denoting the group unit by 1 G, the ring R[G] contains a subring isomorphic to R, and its group of invertible elements contains a subgroup isomorphic to G. For considering the indicator function of {1 G}, which is the vector f defined by

  7. Function (mathematics) - Wikipedia

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

    A multivariate function, multivariable function, or function of several variables is a function that depends on several arguments. Such functions are commonly encountered. For example, the position of a car on a road is a function of the time travelled and its average speed.

  8. Formal group law - Wikipedia

    en.wikipedia.org/wiki/Formal_group_law

    Given an n-dimensional formal group law F over R and a commutative R-algebra S, we can form a group F(S) whose underlying set is N n where N is the set of nilpotent elements of S. The product is given by using F to multiply elements of N n ; the point is that all the formal power series now converge because they are being applied to nilpotent ...

  9. Homeomorphism group - Wikipedia

    en.wikipedia.org/wiki/Homeomorphism_group

    In mathematics, particularly topology, the homeomorphism group of a topological space is the group consisting of all homeomorphisms from the space to itself with function composition as the group operation.