Root-Mean-Square Deviation (RMSD)
nounid
5083·updated May 18, 2026verified
of an estimator of a parameter[; ...] the square-root of the mean squared error (MSE) of the estimator. In symbols, if X is an estimator of the parameter t, then RMSE(X) = ( E( (X−t)2 ) )½. The RMSE of an estimator is a measure of the expected error of the estimator. The units of RMSE are the same as the units of the estimator.
MWE
Classifications
Entity Type
Finding85%rule-basedr:entity.finding.audit.v1
Sensitivity
—95%llm-generatedllm:claude-haiku-4-5
Information Class
—95%llm-generatedllm:claude-haiku-4-5
Variants
- synonym
- root-mean-square error (RMSE)
- plural
- Root-Mean-Square Deviation (RMSD)S
- possessive
- Root-Mean-Square Deviation (RMSD)'s
- pluralpossessive
- Root-Mean-Square Deviation (RMSD)S'
Framework definitions
- §1
- of an estimator of a parameter[; ...] the square-root of the mean squared error (MSE) of the estimator. In symbols, if X is an estimator of the parameter t, then RMSE(X) = ( E( (X−t)2 ) )½. The RMSE of an estimator is a measure of the expected error of the estimator. The units of RMSE are the same as the units of the estimator.
- §1
- a frequently used measure of the differences between values (sample or population values) predicted by a model or an estimator and the values observed
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