chain-rule ( word -- e )

Vocabulary

math.dual.private

Inputs

word

an object

Outputs

e

an object

Definition

USING: combinators.smart generalizations kernel math words ;

IN: math.dual.private

MACRO: chain-rule ( word -- e )
    [ input-length '[ _ duals>nweave ] ]
    [ "derivative" word-prop ]
    [ input-length 1 + '[ _ nspread ] ] tri
    '[ [ @ _ @ ] sum-outputs ] ;