## Regression Models

Start Date: 11/03/2019

 Course Type: Common Course

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Linear models, as their name implies, relates an outcome to a set of predictors of interest using li

#### Course Tag

Model Selection Generalized Linear Model Linear Regression Regression Analysis

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Article Example
Regression analysis Regression models involve the following variables:
Nonparametric regression Nonparametric regression models always fits for larger data
Censored regression model These and other censored regression models are often confused with truncated regression models. Truncated regression models are used for data where whole observations are missing so that the values for the dependent and the independent variables are unknown. Censored regression models are used for data where only the value for the dependent variable (hours of work in the example above) is unknown while the values of the independent variables (age, education, family status) are still available.
Truncated regression model Truncated regression models are often confused with censored regression models where only the value of the dependent variable is clustered at a lower threshold, an upper threshold, or both, while the value for independent variables is available.
Linear regression The following are the major assumptions made by standard linear regression models with standard estimation techniques (e.g. ordinary least squares):
Logistic regression Discrimination in linear regression models is generally measured using R. Since this has no direct analog in logistic regression, various methods including the following can be used instead.
Errors-in-variables models In statistics, errors-in-variables models or measurement error models are regression models that account for measurement errors in the independent variables. In contrast, standard regression models assume that those regressors have been measured exactly, or observed without error; as such, those models account only for errors in the dependent variables, or responses.
Poisson regression Poisson regression models are generalized linear models with the logarithm as the (canonical) link function, and the Poisson distribution function as the assumed probability distribution of the response.
Regression dilution Hughes (1993) shows that the regression dilution ratio methods apply approximately in survival models. Rosner (1992) shows that the ratio methods apply approximately to logistic regression models. Carroll et al. (1995) give more detail on regression dilution in nonlinear models, presenting the regression dilution ratio methods as the simplest case of "regression calibration" methods, in which additional covariates may also be incorporated.
Truncated regression model Estimation of truncated regression models are usually done via parametric, semi-parametric and non-parametric maximum likelihood methods.
Unit-weighted regression Andreas Graefe applied an equal weighting approach to nine established multiple regression models for forecasting U.S. presidential elections. Across the ten elections from 1976 to 2012, equally weighted predictors reduced the forecast error of the original regression models on average by four percent. An equal-weights model that includes all variables provided well-calibrated forecasts that reduced the error of the most accurate regression model by 29% percent.
Semiparametric regression In statistics, semiparametric regression includes regression models that combine parametric and nonparametric models. They are often used in situations where the fully nonparametric model may not perform well or when the researcher wants to use a parametric model but the functional form with respect to a subset of the regressors or the density of the errors is not known. Semiparametric regression models are a particular type of semiparametric modelling and, since semiparametric models contain a parametric component, they rely on parametric assumptions and may be misspecified and inconsistent, just like a fully parametric model.
Vector generalized linear model and include 3 of the most important statistical regression models:
Regression dilution The case of multiple predictor variables (possibly correlated) subject to variability (possibly correlated) has been well-studied for linear regression, and for some non-linear regression models. Other non-linear models, such as proportional hazards models for survival analysis, have been considered only with a single predictor subject to variability.
Least-angle regression In statistics, least-angle regression (LARS) is an algorithm for fitting linear regression models to high-dimensional data, developed by Bradley Efron, Trevor Hastie, Iain Johnstone and Robert Tibshirani.
Generalized linear model GLMs with this setup are logistic regression models (or "logit models").
Backfitting algorithm Additive models are a class of non-parametric regression models of the form:
History of network traffic models Regression models define explicitly the next random variable in the sequence by previous ones within a specified time window and a moving average of a white noise.
Quantitative structure–activity relationship Quantitative structure–activity relationship models (QSAR models) are regression or classification models used in the chemical and biological sciences and engineering. Like other regression models, QSAR regression models relate a set of "predictor" variables (X) to the potency of the response variable (Y), while classification QSAR models relate the predictor variables to a categorical value of the response variable.
Local regression LOESS and LOWESS (locally weighted scatterplot smoothing) are two strongly related non-parametric regression methods that combine multiple regression models in a "k"-nearest-neighbor-based meta-model. "LOESS" is a later generalization of LOWESS; although it is not a true initialism, it may be understood as standing for "LOcal regrESSion".