• In econometrics, the autoregressive conditional heteroskedasticity (ARCH) model is a statistical model for time series data that describes the variance...
    23 KB (3,837 words) - 12:33, 15 January 2025
  • In statistics, econometrics, and signal processing, an autoregressive (AR) model is a representation of a type of random process; as such, it can be used...
    34 KB (5,421 words) - 03:27, 4 February 2025
  • variances are important parts of autoregressive conditional heteroskedasticity (ARCH) models. The conditional variance of a random variable Y given another...
    6 KB (1,099 words) - 10:03, 4 June 2024
  • In the statistical analysis of time series, autoregressive–moving-average (ARMA) models are a way to describe a (weakly) stationary stochastic process...
    19 KB (2,444 words) - 14:29, 6 January 2025
  • Thumbnail for Median
    {\displaystyle t\mapsto F_{X|Y=y}^{-1}(t)} is the inverse of the conditional cdf (i.e., conditional quantile function) of x ↦ F X | Y ( x | y ) {\displaystyle...
    62 KB (7,974 words) - 14:03, 22 November 2024
  • Thumbnail for Homoscedasticity and heteroscedasticity
    White, Halbert (1980). "A heteroskedasticity-consistent covariance matrix estimator and a direct test for heteroskedasticity". Econometrica. 48 (4): 817–838...
    27 KB (3,191 words) - 23:32, 30 August 2024
  • interpreted within the context of information theory. Bayes factor Conditional entropy Conditional probability Empirical likelihood Likelihood principle Likelihood-ratio...
    64 KB (8,545 words) - 07:33, 5 February 2025
  • Thumbnail for Continuous uniform distribution
    Park, Sung Y.; Bera, Anil K. (2009). "Maximum entropy autoregressive conditional heteroskedasticity model". Journal of Econometrics. 150 (2): 219–230. CiteSeerX 10...
    27 KB (4,219 words) - 07:31, 30 October 2024
  • Correlogram Autocovariance Autoregressive conditional duration Autoregressive conditional heteroskedasticity Autoregressive fractionally integrated moving...
    87 KB (8,285 words) - 04:29, 7 October 2024
  • Thumbnail for Time series
    changes of variance over time (heteroskedasticity). These models represent autoregressive conditional heteroskedasticity (ARCH) and the collection comprises...
    42 KB (5,010 words) - 01:42, 14 January 2025
  • Thumbnail for Partial autocorrelation function
    role in data analysis aimed at identifying the extent of the lag in an autoregressive (AR) model. The use of this function was introduced as part of the Box–Jenkins...
    9 KB (1,129 words) - 10:23, 1 August 2024
  • Thumbnail for Exponential distribution
    Park, Sung Y.; Bera, Anil K. (2009). "Maximum entropy autoregressive conditional heteroskedasticity model" (PDF). Journal of Econometrics. 150 (2). Elsevier:...
    43 KB (6,632 words) - 16:39, 13 February 2025
  • process model. VAR models generalize the single-variable (univariate) autoregressive model by allowing for multivariate time series. VAR models are often...
    22 KB (3,542 words) - 03:58, 20 January 2025
  • Thumbnail for Variance
    {Var} [X\mid Y])+\operatorname {Var} (\operatorname {E} [X\mid Y]).} The conditional expectation E ⁡ ( X ∣ Y ) {\displaystyle \operatorname {E} (X\mid Y)}...
    59 KB (10,189 words) - 21:12, 3 February 2025
  • as one of the parameters. As another example, consider a first-order autoregressive model, defined by xi = c + φxi−1 + εi, with the εi being i.i.d. Gaussian...
    42 KB (5,483 words) - 14:30, 15 February 2025
  • Thumbnail for Student's t-distribution
    ISBN 9780412039911. Park SY, Bera AK (2009). "Maximum entropy autoregressive conditional heteroskedasticity model". Journal of Econometrics. 150 (2): 219–230. doi:10...
    55 KB (6,358 words) - 19:28, 27 January 2025
  • Thumbnail for Log-normal distribution
    Park, Sung Y.; Bera, Anil K. (2009). "Maximum entropy autoregressive conditional heteroskedasticity model" (PDF). Journal of Econometrics. 150 (2): 219–230...
    83 KB (12,195 words) - 14:40, 12 February 2025
  • Thumbnail for Principal component analysis
    Cross-correlation (XCF) ARMA model ARIMA model (Box–Jenkins) Autoregressive conditional heteroskedasticity (ARCH) Vector autoregression (VAR) Frequency domain...
    115 KB (14,450 words) - 19:54, 13 February 2025
  • Thumbnail for Logistic regression
    be to predict the likelihood of a homeowner defaulting on a mortgage. Conditional random fields, an extension of logistic regression to sequential data...
    127 KB (20,641 words) - 16:46, 9 February 2025
  • subpopulations defined by X = 1 and X = 0 are defined in terms of the conditional probabilities given X, i.e., P(Y |X): Y = 1 Y = 0 X = 1 p 11 p 11 + p...
    49 KB (7,072 words) - 06:11, 16 October 2024
  • commonly, the conditional median or some other quantile is used. Like all forms of regression analysis, linear regression focuses on the conditional probability...
    75 KB (10,428 words) - 07:51, 10 February 2025
  • Thumbnail for Chi-squared test
    Cross-correlation (XCF) ARMA model ARIMA model (Box–Jenkins) Autoregressive conditional heteroskedasticity (ARCH) Vector autoregression (VAR) Frequency domain...
    22 KB (2,430 words) - 11:52, 1 February 2025
  • Thumbnail for Standard deviation
    standard deviation of a slice of the multivariate distribution (i.e. the conditional distribution) along the line in the direction of the unit vector η ^...
    59 KB (8,181 words) - 00:45, 1 February 2025
  • Thumbnail for Multivariate normal distribution
    (X_{1}\mid X_{2}=x_{2})=1-\rho ^{2};} thus the conditional variance does not depend on x2. The conditional expectation of X1 given that X2 is smaller/bigger...
    66 KB (9,655 words) - 09:14, 16 February 2025
  • Thumbnail for Granger causality
    Granger causality analysis is usually performed by fitting a vector autoregressive model (VAR) to the time series. In particular, let X ( t ) ∈ R d × 1...
    26 KB (3,375 words) - 05:33, 26 January 2025
  • Thumbnail for Correlation
    elements of the matrix are equal to each other. On the other hand, an autoregressive matrix is often used when variables represent a time series, since correlations...
    39 KB (5,358 words) - 18:05, 29 January 2025
  • (2003). "Time-series econometrics: Cointegration and autoregressive conditional heteroskedasticity". Advanced Information on the Bank of Sweden Prize in...
    15 KB (2,171 words) - 15:26, 17 August 2024
  • Thumbnail for Gamma distribution
    Park, Sung Y.; Bera, Anil K. (2009). "Maximum entropy autoregressive conditional heteroskedasticity model" (PDF). Journal of Econometrics. 150 (2): 219–230...
    66 KB (9,067 words) - 16:28, 14 February 2025
  • Thumbnail for Regression analysis
    (see linear regression), this allows the researcher to estimate the conditional expectation (or population average value) of the dependent variable when...
    38 KB (5,289 words) - 14:49, 15 February 2025
  • Thumbnail for Monte Carlo method
    Cross-correlation (XCF) ARMA model ARIMA model (Box–Jenkins) Autoregressive conditional heteroskedasticity (ARCH) Vector autoregression (VAR) Frequency domain...
    91 KB (10,677 words) - 18:17, 14 February 2025