• 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...
    21 KB (3,210 words) - 21:23, 18 July 2025
  • Thumbnail for Smith–Waterman algorithm
    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...
    20 KB (2,959 words) - 14:55, 5 May 2025
  • Thumbnail for BLOSUM
    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...
    26 KB (3,006 words) - 16:41, 16 July 2025
  • Thumbnail for Substitution model
    proteins). Substitution models are used to calculate the likelihood of phylogenetic trees using multiple sequence alignment data. Thus, substitution models...
    71 KB (9,588 words) - 04:40, 29 July 2025
  • matrix Position-specific scoring matrix Similarity matrix Substitution matrix Matrix Planting Matrix population models Biology Eighth Edition Campbell...
    5 KB (631 words) - 01:35, 18 July 2025
  • deciphers the text by performing the inverse substitution process to extract the original message. Substitution ciphers can be compared with transposition...
    30 KB (4,028 words) - 07:04, 25 June 2025
  • 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...
    38 KB (4,919 words) - 15:50, 17 July 2025
  • Thumbnail for Multiple sequence alignment
    simpler substitution matrix, wherein only identical matches and mismatches are considered, is typical. The scores in the substitution matrix may be either...
    49 KB (6,221 words) - 17:30, 17 July 2025
  • 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
  • parts of the Slutsky equation, namely the substitution effect and income effect. In general, the substitution effect is negative. Slutsky derived this...
    15 KB (2,971 words) - 11:13, 25 July 2025
  • In calculus, integration by substitution, also known as u-substitution, reverse chain rule or change of variables, is a method for evaluating integrals...
    20 KB (3,344 words) - 05:25, 4 July 2025
  • Thumbnail for Point accepted mutation
    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...
    45 KB (5,042 words) - 19:15, 16 May 2025
  • Thumbnail for Levenshtein distance
    it with fewer than 3 edits: kitten → sitten (substitution of "s" for "k"), sitten → sittin (substitution of "i" for "e"), sittin → sitting (insertion...
    21 KB (2,487 words) - 09:04, 30 July 2025
  • Thumbnail for Matrix (mathematics)
    In mathematics, a matrix (pl.: matrices) is a rectangular array of numbers or other mathematical objects with elements or entries arranged in rows and...
    128 KB (15,698 words) - 22:28, 31 July 2025
  • Thumbnail for Penrose tiling
    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...
    53 KB (5,984 words) - 13:29, 16 July 2025
  • Thumbnail for Ammann–Beenker tiling
    structure: the tilings are substitution tilings arising from substitution rules for growing larger and larger patches. This substitution structure also implies...
    12 KB (1,506 words) - 17:34, 3 January 2025
  • Thumbnail for List of named matrices
    multiport system. State transition matrix — exponent of state matrix in control systems. Substitution matrix — a matrix from bioinformatics, which describes...
    32 KB (1,336 words) - 21:01, 14 April 2025
  • Thumbnail for Sequence alignment
    lineages. The absence of substitutions, or the presence of only very conservative substitutions (that is, the substitution of amino acids whose side...
    57 KB (6,913 words) - 04:44, 15 July 2025
  • specifically the problem of statistical classification, a confusion matrix, also known as error matrix, is a specific table layout that allows visualization of the...
    18 KB (1,926 words) - 05:17, 23 June 2025
  • (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
  • Thumbnail for Gaussian elimination
    (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
  • 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...
    29 KB (4,813 words) - 02:50, 10 May 2025
  • 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