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этимология

Что (кто) такое access matrix model - определение

SECURITY MODEL OF PROTECTION STATE IN COMPUTER SYSTEMS

The Access Matrix; Access matrix; Access matrix model; Access Control Matrix

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Access control matrix

In computer science, an access control matrix or access matrix is an abstract, formal security model of protection state in computer systems, that characterizes the rights of each subject with respect to every object in the system. It was first introduced by Butler W.

https://en.wikipedia.org/wiki/Access_control_matrix

Matrix theory (physics)

QUANTUM MECHANICAL MODEL BASED ON MATHEMATICAL MATRICES

IKKT matrix model; BFSS matrix model

In theoretical physics, the BFSS matrix model or matrix theory is a quantum mechanical model proposed by Tom Banks, Willy Fischler, Stephen Shenker, and Leonard Susskind in 1997.Banks et al. 1997

https://en.wikipedia.org/wiki/Matrix_theory_(physics)

Design matrix

MATRIX OF VALUES OF EXPLANATORY VARIABLES OF A SET OF OBJECTS

Data matrix (statistics); Data matrix (multivariate statistics); Model matrix; Regressor matrix

In statistics and in particular in regression analysis, a design matrix, also known as model matrix or regressor matrix and often denoted by X, is a matrix of values of explanatory variables of a set of objects. Each row represents an individual object, with the successive columns corresponding to the variables and their specific values for that object.

https://en.wikipedia.org/wiki/Design_matrix

MATRIX MATH

$An undirected graph with adjacency matrix: <math display="block">\begin{bmatrix} 1 & 1 & 0 \\ 1 & 0 & 1 \\ 0 & 1 & 0 \end{bmatrix}.</math>$
$Two different Markov chains. The chart depicts the number of particles (of a total of 1000) in state "2". Both limiting values can be determined from the transition matrices, which are given by <math> \begin{bmatrix} 0.7 & 0\\ 0.3 & 1 \end{bmatrix}</math> (red) and <math> \begin{bmatrix} 0.7 & 0.2\\ 0.3 & 0.8 \end{bmatrix}</math> (black).$

RECTANGULAR ARRAY OF NUMBERS, SYMBOLS, OR EXPRESSIONS, ARRANGED IN ROWS AND COLUMNS

Matrix (Mathematics); Matrix (math); Submatrix; Matrix theory; Matrix (maths); Submatrices; Matrix Theory and Linear Algebra; Infinite matrix; Square (matrix); Matrix operation; Square submatrix; Matrix(mathematics); Real matrix; Matrix math; Matrix index; Equal matrix; Matrix equation; Matrix (computer science); Matrix notation; Empty matrix; Real matrices; Principal submatrix; Array (mathematics); Matrix power; Complex matrix; Complex matrices; Applications of matrices; Rectangular matrix; Uniform matrix

<language> An early system on the UNIVAC I or II. [Listed in CACM 2(5):1959-05-16]. (1997-02-27)

Logical matrix

MATRIX WITH ENTRIES FROM THE BOOLEAN DOMAIN B = {0, 1}

Binary matrix; (0,1) matrix; (0,1)-matrix; (0,1)-matrices; 0,1-matrix; 0-1 matrix; Matrix logic; Zero-One matrix; Logical vector; Logical matrices

A logical matrix, binary matrix, relation matrix, Boolean matrix, or (0, 1) matrix is a matrix with entries from the Boolean domain Such a matrix can be used to represent a binary relation between a pair of finite sets.

https://en.wikipedia.org/wiki/Logical_matrix

Stochastic matrix

MATRIX USED TO DESCRIBE THE TRANSITIONS OF A MARKOV CHAIN

Transition probability matrix; Markov transition matrix; Markov matrix; Stachastic matrix; Right stochastic matrix; Left stochastic matrix; Markov Matrices; Markov matrices; Probability matrix; Stochastic matrices; Stochastic operator

In mathematics, a stochastic matrix is a square matrix used to describe the transitions of a Markov chain. Each of its entries is a nonnegative real number representing a probability.

https://en.wikipedia.org/wiki/Stochastic_matrix

Projection matrix

$A matrix, <math>\mathbf{A}</math> has its column space depicted as the green line. The projection of some vector <math>\mathbf{b}</math> onto the column space of <math>\mathbf{A}</math> is the vector <math>\mathbf{x}</math>$

NOTION IN STATISTICS

Hat Matrix; Operator matrix; Yhat; Hat matrix; Annihilator matrix; Residual maker matrix

In statistics, the projection matrix (\mathbf{P}), sometimes also called the influence matrix or hat matrix (\mathbf{H}), maps the vector of response values (dependent variable values) to the vector of fitted values (or predicted values). It describes the influence each response value has on each fitted value.

https://en.wikipedia.org/wiki/Projection_matrix

Zero matrix

MATRIX WHOSE ENTRIES ARE ALL 0

Null matrix; Mortal matrix; Mortal matrix problem; 0 matrix

In mathematics, particularly linear algebra, a zero matrix or null matrix is a matrix all of whose entries are zero. It also serves as the additive identity of the additive group of m \times n matrices, and is denoted by the symbol O or 0 followed by subscripts corresponding to the dimension of the matrix as the context sees fit.

https://en.wikipedia.org/wiki/Zero_matrix

Laplacian matrix

MATRIX REPRESENTATION OF A GRAPH

Laplace matrix; Kirchhoff matrix (of a graph); Kirchhoff matrix; Laplacian matrix of a graph; Graph Laplacian

In the mathematical field of graph theory, the Laplacian matrix, also called the graph Laplacian, admittance matrix, Kirchhoff matrix or discrete Laplacian, is a matrix representation of a graph. Named after Pierre-Simon Laplace, the graph Laplacian matrix can be viewed as a matrix form of the negative discrete Laplace operator on a graph approximating the negative continuous Laplacian obtained by the finite difference method.

https://en.wikipedia.org/wiki/Laplacian_matrix

Matrix (geology)

GEOLOGICAL TERM FOR THE MASS OF MATERIAL IN WHICH LARGER GRAINS, CRYSTALS OR CLASTS ARE EMBEDDED

Groundmass; Rock matrix; Cementing material

The matrix or groundmass of a rock is the finer-grained mass of material in which larger grains, crystals, or clasts are embedded.

https://en.wikipedia.org/wiki/Matrix_(geology)

Википедия

Access control matrix

In computer science, an access control matrix or access matrix is an abstract, formal security model of protection state in computer systems, that characterizes the rights of each subject with respect to every object in the system. It was first introduced by Butler W. Lampson in 1971.

An access matrix can be envisioned as a rectangular array of cells, with one row per subject and one column per object. The entry in a cell – that is, the entry for a particular subject-object pair – indicates the access mode that the subject is permitted to exercise on the object. Each column is equivalent to an access control list for the object; and each row is equivalent to an access profile for the subject.

https://en.wikipedia.org/wiki/Access control matrix