In bioinformatics and evolutionary biology, a substitution matrix describes the frequency at which a character in a nucleotide sequence or a protein sequence...
21 KB (2,803 words) - 17:47, 29 July 2025
an iterative process called forward substitution for lower triangular matrices and analogously back substitution for upper triangular matrices. The process...
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Smith–Waterman algorithm (section Substitution matrix)
includes the substitution matrix and the gap-scoring scheme). The main difference to the Needleman–Wunsch algorithm is that negative scoring matrix cells are...
36 KB (4,666 words) - 17:52, 18 July 2025
It is also called a probability matrix, transition matrix, substitution matrix, or Markov matrix. The stochastic matrix was first developed by Andrey Markov...
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BLOSUM (redirect from Blosum matrix)
In bioinformatics, the BLOSUM (BLOcks SUbstitution Matrix) matrix is a substitution matrix used for sequence alignment of proteins. BLOSUM matrices are...
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proteins). Substitution models are used to calculate the likelihood of phylogenetic trees using multiple sequence alignment data. Thus, substitution models...
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matrix Position-specific scoring matrix Similarity matrix Substitution matrix Matrix Planting Matrix population models Biology Eighth Edition Campbell...
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deciphers the text by performing the inverse substitution process to extract the original message. Substitution ciphers can be compared with transposition...
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in step 2 with all the 3-letter words. By using the scoring matrix (substitution matrix) to score the comparison of each residue pair, there are 20^3...
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simpler substitution matrix, wherein only identical matches and mismatches are considered, is typical. The scores in the substitution matrix may be either...
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vector calculus, the Jacobian matrix (/dʒəˈkoʊbiən/, /dʒɪ-, jɪ-/) of a vector-valued function of several variables is the matrix of all its first-order partial...
26 KB (3,768 words) - 07:42, 17 June 2025
Slutsky equation (redirect from Slutsky matrix)
parts of the Slutsky equation, namely the substitution effect and income effect. In general, the substitution effect is negative. Slutsky derived this...
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In calculus, integration by substitution, also known as u-substitution, reverse chain rule or change of variables, is a method for evaluating integrals...
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Point accepted mutation (redirect from PAM matrix)
matrices are sometimes used as substitution matrices to score sequence alignments for proteins. Each entry in a PAM matrix indicates the likelihood of the...
33 KB (4,444 words) - 18:59, 7 June 2025
theory, the Laplacian matrix, also called the graph Laplacian, admittance matrix, Kirchhoff matrix, or discrete Laplacian, is a matrix representation of a...
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it with fewer than 3 edits: kitten → sitten (substitution of "s" for "k"), sitten → sittin (substitution of "i" for "e"), sittin → sitting (insertion...
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In mathematics, a matrix (pl.: matrices) is a rectangular array of numbers or other mathematical objects with elements or entries arranged in rows and...
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larger size convention for the B-tiles), which can be summarized in a substitution matrix equation: ( B L B S ) = ( 1 1 1 0 ) ( A L A S ) . {\displaystyle...
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structure: the tilings are substitution tilings arising from substitution rules for growing larger and larger patches. This substitution structure also implies...
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List of named matrices (redirect from List of matrix)
multiport system. State transition matrix — exponent of state matrix in control systems. Substitution matrix — a matrix from bioinformatics, which describes...
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Sequence alignment (section Dot-matrix methods)
lineages. The absence of substitutions, or the presence of only very conservative substitutions (that is, the substitution of amino acids whose side...
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specifically the problem of statistical classification, a confusion matrix, also known as error matrix, is a specific table layout that allows visualization of the...
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Coltrane changes (redirect from Coltrane substitution)
(Coltrane Matrix or cycle, also known as chromatic third relations and multi-tonic changes) are a harmonic progression variation using substitute chords...
22 KB (1,709 words) - 13:34, 1 May 2025
(sometimes called back substitution) continues to use row operations until the solution is found; in other words, it puts the matrix into reduced row echelon...
33 KB (4,369 words) - 22:29, 19 June 2025
In mathematics, the Hessian matrix, Hessian or (less commonly) Hesse matrix is a square matrix of second-order partial derivatives of a scalar-valued function...
22 KB (3,550 words) - 21:19, 31 July 2025
Gap penalty (section Scoring matrix)
increasing the gap length. Substitution matrices such as BLOSUM are used for sequence alignment of proteins. A Substitution matrix assigns a score for aligning...
19 KB (2,483 words) - 15:21, 12 July 2025
universal trigonometric substitution, and also known by variant names such as half-tangent substitution or half-angle substitution. It is sometimes misattributed...
21 KB (2,946 words) - 05:04, 15 July 2025
classical adjoint of a square matrix A, adj(A), is the transpose of its cofactor matrix. It is occasionally known as adjunct matrix, or "adjoint", though that...
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Molecular Evolutionary Genetics Analysis (section MCL-based estimation of nucleotide substitution patterns)
choose different substitution types, model, etc. to fit best with chosen data. The three main substitution models are 4x4 Rate Matrix, Transition-Transversion...
33 KB (3,467 words) - 21:49, 3 June 2025
orthogonal matrix and R an upper triangular matrix. The system Q(Rx) = b is solved by Rx = QTb = c, and the system Rx = c is solved by 'back substitution'. The...
26 KB (3,580 words) - 06:53, 18 July 2025