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Companion matrix. In linear algebra, the Frobenius companion matrix of the monic polynomial. is the square matrix defined as. Some authors use the transpose of this matrix, , which is more convenient for some purposes such as linear recurrence relations (see below). is defined from the coefficients of , while the characteristic polynomial as ...
Extracellular matrix. In biology, the extracellular matrix ( ECM ), [1] [2] also called intercellular matrix (ICM), is a network consisting of extracellular macromolecules and minerals, such as collagen, enzymes, glycoproteins and hydroxyapatite that provide structural and biochemical support to surrounding cells.
Matrix metalloproteinases ( MMPs ), also known as matrix metallopeptidases or matrixins, are metalloproteinases that are calcium -dependent zinc -containing endopeptidases; [1] other family members are adamalysins, serralysins, and astacins. The MMPs belong to a larger family of proteases known as the metzincin superfamily.
This sparked interest in the subject, with new theoretical (e.g., computing the nearest correlation matrix with factor structure) and numerical (e.g. usage the Newton's method for computing the nearest correlation matrix) results obtained in the subsequent years. Uncorrelatedness and independence of stochastic processes
Vandermonde matrix. In linear algebra, a Vandermonde matrix, named after Alexandre-Théophile Vandermonde, is a matrix with the terms of a geometric progression in each row: an matrix. with entries , the jth power of the number , for all zero-based indices and . [1] Most authors define the Vandermonde matrix as the transpose of the above matrix.
Matrix (protocol), an open standard for real-time communication. Matrix (record production), or master, a disc used in the production of phonograph records. Matrix number, of a gramophone record. Diode matrix, a two-dimensional grid of intersecting diodes. Display matrix, picture elements of an information display arranged as a matrix.
Hankel matrix. In linear algebra, a Hankel matrix (or catalecticant matrix ), named after Hermann Hankel, is a square matrix in which each ascending skew-diagonal from left to right is constant. For example, More generally, a Hankel matrix is any matrix of the form. In terms of the components, if the element of is denoted with , and assuming ...
In predictive analytics, a table of confusion (sometimes also called a confusion matrix) is a table with two rows and two columns that reports the number of true positives, false negatives, false positives, and true negatives. This allows more detailed analysis than simply observing the proportion of correct classifications (accuracy).