Regression or regressions may refer to:
Science
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Marine regression
A marine regression is a geological process occurring when areas of submerged seafloor are exposed above the sea level. The opposite event, marine transgression, occurs when flooding from the sea covers previously-exposed land.
Evidence of marin ...
, coastal advance due to falling sea level, the opposite of marine transgression
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Regression (medicine), a characteristic of diseases to express lighter symptoms or less extent (mainly for tumors), without disappearing totally
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Regression (psychology), a defensive reaction to some unaccepted impulses
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Nodal regression, the movement of the nodes of an object in orbit, in the opposite direction to the motion of the object
Statistics
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Regression analysis
In statistical modeling, regression analysis is a set of statistical processes for estimating the relationships between a dependent variable (often called the 'outcome' or 'response' variable, or a 'label' in machine learning parlance) and one ...
, a statistical technique for estimating the relationships among variables. There are several types of regression:
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Linear regression
In statistics, linear regression is a linear approach for modelling the relationship between a scalar response and one or more explanatory variables (also known as dependent and independent variables). The case of one explanatory variable is ...
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Simple linear regression
In statistics, simple linear regression is a linear regression model with a single explanatory variable. That is, it concerns two-dimensional sample points with one independent variable and one dependent variable (conventionally, the ''x'' an ...
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Logistic regression
In statistics, the logistic model (or logit model) is a statistical model that models the probability of an event taking place by having the log-odds for the event be a linear function (calculus), linear combination of one or more independent var ...
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Nonlinear regression
In statistics, nonlinear regression is a form of regression analysis in which observational data are modeled by a function which is a nonlinear combination of the model parameters and depends on one or more independent variables. The data are fi ...
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Nonparametric regression
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Robust regression
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Stepwise regression
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Regression toward the mean
In statistics, regression toward the mean (also called reversion to the mean, and reversion to mediocrity) is the fact that if one sample of a random variable is extreme, the next sampling of the same random variable is likely to be closer to i ...
, a common statistical phenomenon
Computing
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Software regression, the appearance of a bug which was absent in a previous revision
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Regression testing, a software testing method which seeks to uncover regression bugs
Hypnosis
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Age regression in therapy, a process claiming to retrieve memories
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Past life regression, a process claiming to retrieve memories of previous lives
Other uses
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Infinite regress
An infinite regress is an infinite series of entities governed by a recursive principle that determines how each entity in the series depends on or is produced by its predecessor. In the epistemic regress, for example, a belief is justified be ...
, a problem in epistemology
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''Regression'' (film), a 2015 horror film directed and written by Alejandro Amenábar, starring Ethan Hawke and Emma Watson
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''Regressions'' (album), 2010 album by Cleric
See also
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Regress (disambiguation)
{{Disambiguation