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covariance

noun
/kəʊˈvɛː.ɹi.əns/UK/koʊˈvæɹ.i.əns/US/ˈkoʊˈvɛɹ.i.əns/

Etymology

From co- + variance.

  1. derived from variantia
  2. derived from variaunce
  3. derived from variance
  4. inherited from variance
  5. prefixed as covariance — “co + variance”

Definitions

  1. A statistical measure defined as scriptstyle operatorname Cov(X,Y)= operatorname…

    A statistical measure defined as scriptstyle operatorname Cov(X,Y)= operatorname E((X-μ)(Y-ν)) given two real-valued random variables X and Y, with expected values scriptstyle E(X),=,μ and scriptstyle E(Y),=,ν.

    • The elements of such a correlation matrix do not have asymptotic variances and covariances of the form (1.2), even if S has a Wishart distribution.

  2. The conversion of data types from wider to narrower in certain situations.

    • As we will see in Chapter 8, we see both covariance and contravariance throughout the Java Collections. They largely exist to ensure that the generics just “do the right thing” and behave in a manner that should not surprise the developer.

The neighborhood

Derived

autocovariance, covariance function, covariance mapping, covariance matrix, crosscovariance, eddy covariance, isocovariance, subcovariance

Vish — recursive loop

No curated loop yet for covariance. Loops are being traced one word at a time while the ingestion pipeline matures.

sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA