• In statistics, the mean squared error (MSE) or mean squared deviation (MSD) of an estimator (of a procedure for estimating an unobserved quantity) measures...
    24 KB (3,861 words) - 12:45, 11 May 2025
  • equalizer "Mean Squared Error (MSE)". www.probabilitycourse.com. Retrieved 9 May 2017. Moon and Stirling. Johnson, D. "Minimum Mean Squared Error Estimators"...
    41 KB (9,310 words) - 08:40, 13 May 2025
  • to the mean squared error, the equivalent for mean absolute error is least absolute deviations. MAE is not identical to root-mean square error (RMSE)...
    8 KB (1,074 words) - 18:40, 16 February 2025
  • The root mean square deviation (RMSD) or root mean square error (RMSE) is either one of two closely related and frequently used measures of the differences...
    11 KB (1,620 words) - 18:39, 16 February 2025
  • arises in the expression mean squared error (MSE). The mean squared error of a regression is a number computed from the sum of squares of the computed residuals...
    16 KB (2,164 words) - 16:12, 23 May 2025
  • In statistics the mean squared prediction error (MSPE), also known as mean squared error of the predictions, of a smoothing, curve fitting, or regression...
    6 KB (1,025 words) - 14:41, 15 November 2024
  • Thumbnail for Cross-validation (statistics)
    continuously distributed, the mean squared error, root mean squared error or median absolute deviation could be used to summarize the errors. When users apply cross-validation...
    44 KB (5,781 words) - 09:14, 19 February 2025
  • may be known as mean square deviation. When the reference value is the assumed true value, the result is known as mean squared error. A typical estimate...
    2 KB (257 words) - 15:09, 18 September 2024
  • may have a lower mean squared error than any unbiased estimator (see estimator bias). This equation relates the mean squared error with the estimator...
    25 KB (3,725 words) - 11:13, 8 February 2025
  • Thumbnail for Ordinary least squares
    has a smaller mean squared error. In practice s2 is used more often, since it is more convenient for the hypothesis testing. The square root of s2 is...
    65 KB (9,098 words) - 10:14, 3 June 2025
  • arbitrarily crude estimator into an estimator that is optimal by the mean-squared-error criterion or any of a variety of similar criteria. The Rao–Blackwell...
    13 KB (2,174 words) - 10:17, 15 June 2025
  • statistics, the reduced chi-square statistic is used extensively in goodness of fit testing. It is also known as mean squared weighted deviation (MSWD)...
    12 KB (1,867 words) - 19:00, 25 November 2024
  • Thumbnail for Bias–variance tradeoff
    y_{n})\}} . We make "as well as possible" precise by measuring the mean squared error between y {\displaystyle y} and f ^ ( x ; D ) {\displaystyle {\hat...
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  • estimator gives a lower value of some loss function (particularly mean squared error) compared with unbiased estimators (notably in shrinkage estimators);...
    34 KB (5,367 words) - 15:44, 15 April 2025
  • Thumbnail for Standard error
    mean. In regression analysis, the term "standard error" refers either to the square root of the reduced chi-squared statistic or the standard error for...
    20 KB (2,781 words) - 03:46, 4 May 2025
  • of the least squares cost function as in ridge regression (L2-norm penalty) and lasso (L1-norm penalty). Use of the Mean Squared Error (MSE) as the cost...
    75 KB (10,482 words) - 17:25, 13 May 2025
  • accuracy is very closely related to the mean squared error (MSE) method which is just the average squared error of the forecasts. Although these methods...
    13 KB (1,674 words) - 06:34, 30 May 2025
  • zero. Percentage error Mean absolute percentage error Mean squared error Mean squared prediction error Minimum mean-square error Squared deviations Peak...
    2 KB (241 words) - 16:13, 30 October 2023
  • estimators more accurate on average (that is, having lower expected mean squared error) than any method that handles the parameters separately. It is named...
    14 KB (2,435 words) - 06:31, 25 March 2025
  • calculated by finding the mean squared error. More formally, let T be an estimator for the parameter θ. The mean squared error of T is the value MSE ⁡ (...
    22 KB (3,066 words) - 01:10, 20 March 2025
  • Thumbnail for Quantization (signal processing)
    the mean squared error produced by such a rounding operation will be approximately Δ 2 / 12 {\displaystyle \Delta ^{2}/12} . Mean squared error is also...
    42 KB (6,363 words) - 05:18, 17 April 2025
  • Thumbnail for Gamma distribution
    including the exponential and chi-squared distributions under specific conditions. Its mathematical properties, such as mean, variance, skewness, and higher...
    66 KB (9,100 words) - 05:31, 2 June 2025
  • The mean absolute percentage error (MAPE), also known as mean absolute percentage deviation (MAPD), is a measure of prediction accuracy of a forecasting...
    9 KB (1,481 words) - 07:42, 4 October 2024
  • Thumbnail for Cramér–Rao bound
    Cramér–Rao bound (category CS1 errors: ISBN date)
    be (fully) efficient. Such a solution achieves the lowest possible mean squared error among all unbiased methods, and is, therefore, the minimum variance...
    27 KB (4,439 words) - 07:06, 16 June 2025
  • finding the filter coefficients that relate to producing the least mean square of the error signal (difference between the desired and the actual signal)....
    16 KB (3,050 words) - 04:52, 8 April 2025
  • Thumbnail for Circular error probable
    concepts, such as the DRMS (distance root mean square), which is the square root of the average squared distance error, a form of the standard deviation. Another...
    10 KB (1,180 words) - 02:12, 3 June 2025
  • mean (Tofallis, 2015). Relative change and difference Mean absolute error Mean absolute percentage error Mean squared error Root mean squared error Armstrong...
    5 KB (778 words) - 15:38, 25 February 2025
  • "ordinary" least squares approach in the sense that the James–Stein estimator has a lower mean squared error than the "ordinary" least squares estimator for...
    16 KB (2,147 words) - 18:26, 13 June 2025
  • Thumbnail for Variance
    expected value of the squared deviation from the mean of a random variable. The standard deviation (SD) is obtained as the square root of the variance...
    61 KB (10,215 words) - 16:29, 24 May 2025
  • sum of squares (RSS), also known as the sum of squared residuals (SSR) or the sum of squared estimate of errors (SSE), is the sum of the squares of residuals...
    6 KB (1,055 words) - 08:31, 1 March 2023