In statistics, the projection matrix ( P ) {\displaystyle (\mathbf {P} )} , sometimes also called the influence matrix or hat matrix ( H ) {\displaystyle...
13 KB (1,831 words) - 21:07, 14 April 2025
a two-dimensional (2D) surface, a projection transformation is applied to the 3D object using a projection matrix. This transformation removes information...
33 KB (4,468 words) - 02:56, 18 July 2025
223 A projection matrix that is not an orthogonal projection matrix is called an oblique projection matrix. The eigenvalues of a projection matrix must...
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vector projection (also known as the vector component or vector resolution) of a vector a on (or onto) a nonzero vector b is the orthogonal projection of...
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The inversion of the projection matrix P−1, which can be used as the unprojection matrix is defined: P − 1 = [ right − left 2 0 0...
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In computer vision a camera matrix or (camera) projection matrix is a 3 × 4 {\displaystyle 3\times 4} matrix which describes the mapping of a pinhole camera...
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simply by a matrix. However, perspective projections are not, and to represent these with a matrix, homogeneous coordinates can be used. The matrix to rotate...
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Meanwhile, the value projection matrix W V {\displaystyle W^{V}} , in combination with the part of the output projection matrix W O {\displaystyle W^{O}}...
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Camera resectioning (section Projection)
camera projection matrices of two cameras are used to calculate the 3D world coordinates of a point viewed by both cameras. The camera projection matrix is...
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Ordinary least squares (redirect from Least-squares normal matrix)
X(XTX)−1XT is the projection matrix onto the space V spanned by the columns of X. This matrix P is also sometimes called the hat matrix because it "puts...
65 KB (9,098 words) - 10:14, 3 June 2025
Moore–Penrose inverse (redirect from Moore-Penrose Matrix Inverse)
{\displaystyle A} is an orthogonal projection matrix, then its pseudoinverse trivially coincides with the matrix itself, that is, A + = A {\displaystyle...
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Cross product (redirect from Cross product matrix)
computer programming. It should not be confused with the dot product (projection product). The magnitude of the cross product equals the area of a parallelogram...
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M_{X_{1}}} projects onto the orthogonal complement of the image of the projection matrix X 1 ( X 1 T X 1 ) − 1 X 1 T {\displaystyle X_{1}(X_{1}^{\mathsf...
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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...
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Trace (linear algebra) (redirect from Trace of a matrix)
aii is 1 if the ith point is fixed and 0 otherwise. The trace of a projection matrix is the dimension of the target space. P X = X ( X T X ) − 1 X T ⟹...
37 KB (5,564 words) - 18:57, 30 July 2025
Frobenius covariant (category Matrix theory)
In matrix theory, the Frobenius covariants of a square matrix A are special polynomials of it, namely projection matrices Fi(A) associated with the eigenvalues...
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{\displaystyle C_{n}\,} is an orthogonal projection matrix. That is, C n v {\displaystyle C_{n}\mathbf {v} } is a projection of v {\displaystyle \mathbf {v} \...
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List of named matrices (redirect from List of matrix)
matrices used in mathematics, science and engineering. A matrix (plural matrices, or less commonly matrixes) is a rectangular array of numbers called entries...
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Perron–Frobenius theorem (redirect from Primitive matrix)
1. Moreover, the matrix vwT is the projection onto the eigenspace corresponding to r. This projection is called the Perron projection. Collatz–Wielandt...
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Graphics pipeline (section Projection)
camera and projection matrix are usually combined into a transformation matrix so that the camera coordinate system is omitted. The resulting matrix is usually...
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backward LSTM layers) are concatenated and multiplied by a linear matrix ("projection matrix") to produce a 512-dimensional representation per input token...
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this method in projection space by representing the above inequality as a determinant of a matrix and applying the projection matrix to it. Another method...
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hidden representations in the linear subspace spanned by a low-rank projection matrix. LoReFT can be seen as the representation-based equivalent of low-rank...
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n ) {\displaystyle w\in \mathbf {Gr} (k,\mathbf {R} ^{n})} to the projection matrix P w := ∑ i = 1 k w i w i T , {\displaystyle P_{w}:=\sum _{i=1}^{k}w_{i}w_{i}^{T}...
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N}} is the projection of the data onto a lower k-dimensional subspace. Random projection is computationally simple: form the random matrix "R" and project...
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Theorem (Achlioptas, 2003, Theorem 1.1)—Let the random k × n {\textstyle k\times n} projection matrix R {\textstyle R} have entries drawn i.i.d., either from R i j = {...
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^{\mathsf {T}}\mathbf {X} )^{-1}\mathbf {X} ^{\mathsf {T}}} is the projection matrix (or hat matrix). The i {\displaystyle i} -th diagonal element of H {\displaystyle...
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This is a list of characters from The Matrix franchise universe. Many of the characters listed here have names reflecting certain aspects of them, such...
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Transpose (redirect from Transpose of a matrix)
transpose of a matrix is an operator which flips a matrix over its diagonal; that is, it switches the row and column indices of the matrix A by producing...
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the frustum. Together this information can be used to calculate a projection matrix for rendering transformation in a graphics pipeline. Kelvin Sung;...
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