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Similarity (other)
Similarity may refer to: In mathematics and computing * Similarity (geometry), the property of sharing the same shape * Matrix similarity, a relation between matrices * Similarity measure, a function that quantifies the similarity of two objects ** Cosine similarity, which uses the angle between vectors ** String metric, also called string similarity ** Semantic similarity, in computational linguistics In linguistics * Lexical similarity * Semantic similarity In signal processing Similarity between two different signals is also important in the field of signal processing. Below are some common methods for calculating similarity. For instance, let's consider two signals represented as x, n/math> and y, n/math>, where m = 0, 1, 2, ..., M-1 and n = 0, 1, 2, ..., N-1. Maximum error (ME) :Measuring the maximum magnitude of the difference between two signals. Maximum error is useful for assessing the worst-case scenario of prediction accuracy ME= \max(\left, y ,nx ,n\) M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Similarity (geometry)
In Euclidean geometry, two objects are similar if they have the same shape, or one has the same shape as the mirror image of the other. More precisely, one can be obtained from the other by uniformly scaling (enlarging or reducing), possibly with additional translation, rotation and reflection. This means that either object can be rescaled, repositioned, and reflected, so as to coincide precisely with the other object. If two objects are similar, each is congruent to the result of a particular uniform scaling of the other. For example, all circles are similar to each other, all squares are similar to each other, and all equilateral triangles are similar to each other. On the other hand, ellipses are not all similar to each other, rectangles are not all similar to each other, and isosceles triangles are not all similar to each other. If two angles of a triangle have measures equal to the measures of two angles of another triangle, then the triangles are similar. Correspo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variance
In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its population mean or sample mean. Variance is a measure of dispersion, meaning it is a measure of how far a set of numbers is spread out from their average value. Variance has a central role in statistics, where some ideas that use it include descriptive statistics, statistical inference, hypothesis testing, goodness of fit, and Monte Carlo sampling. Variance is an important tool in the sciences, where statistical analysis of data is common. The variance is the square of the standard deviation, the second central moment of a distribution, and the covariance of the random variable with itself, and it is often represented by \sigma^2, s^2, \operatorname(X), V(X), or \mathbb(X). An advantage of variance as a measure of dispersion is that it is more amenable to algebraic manipulation than other measures of dispersion such as the expected absolute deviatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Difference (other)
Difference, The Difference, Differences or Differently may refer to: Music * ''Difference'' (album), by Dreamtale, 2005 * ''Differently'' (album), by Cassie Davis, 2009 ** "Differently" (song), by Cassie Davis, 2009 * ''The Difference'' (album), Pendleton, 2008 * "The Difference" (The Wallflowers song), 1997 * "The Difference", a song by Westlife from the 2009 album ''Where We Are'' * "The Difference", a song by Nick Jonas from the 2016 album '' Last Year Was Complicated'' * "The Difference", a song by Meek Mill featuring Quavo, from the 2016 mixtape '' DC4'' * "The Difference", a song by Matchbox Twenty from the 2002 album '' More Than You Think You Are'' * "The Difference", a 2020 song by Flume featuring Toro y Moi * "The Difference", a 2022 song by Ni/Co which represented Alabama in the ''American Song Contest'' * "Differences" (song), by Ginuwine, 2001 Science and mathematics * Difference (mathematics), the result of a subtraction * Difference equation, a type of recu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Same (other)
Same may refer to: *Sameness or identity Places * Same (Homer), an island mentioned by Homer in the ''Odyssey'' * Same (polis), an ancient city * Same, East Timor, the capital of the Manufahi district * Samé, Mali * Same, Tanzania * Same District, Tanzania Other uses * SAME Deutz-Fahr, an Italian manufacturer of tractors, combine harvesters and engines * SAME (tractors), a brand of SAME Deutz-Fahr * S-adenosyl methionine or SAMe, an amino acid * Society of American Military Engineers * Specific Area Message Encoding, a coding system within the Emergency Alert System in the United States * Governor Francisco Gabrielli International Airport, Argentina, ICAO code "SAME" * "Same", a song by Snow Patrol from ''Final Straw'' * "Same", a song by Oneohtrix Point Never from ''Age Of'' * The Same, a punk band * Syndrome of apparent mineralocorticoid excess, an autosomal recessive disorder causing hypertension and hypokalemia * Sistema de Atención Médica de Emergencia, a public Emergenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
