de-correlation
|de-cor-re-la-tion|
🇺🇸
/ˌdiːkɔːrəˈleɪʃən/
🇬🇧
/ˌdiːkɒrəˈleɪʃ(ə)n/
(decorrelation)
removal of correlation
Etymology
'decorrelation' originates from Modern English, formed by the prefix 'de-' (from Latin 'de-' meaning 'away' or 'removal') combined with 'correlation' (from Late Latin/modern use).
'Correlation' comes from earlier English usage based on Latin roots (related to 'correlate'), and the compound 'de-' + 'correlation' arose in 20th‑century technical contexts (statistics, signal processing) to denote removal or reduction of correlation.
Initially coined to denote the act of removing correlation in technical fields, the meaning has remained consistent and is still used to describe both the process and its result.
Meanings by Part of Speech
Noun 1
the process or result of reducing or removing statistical correlation between two or more variables or signals; making them uncorrelated (often used in statistics, signal processing, and data analysis).
The de-correlation of the sensor outputs improved the estimator's accuracy.
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Noun 2
a technique or operation (e.g., applying a transform such as PCA or whitening) intended to make components statistically independent or uncorrelated.
In preprocessing we applied de-correlation using PCA to simplify subsequent modeling.
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Last updated: 2025/11/06 09:46