l1-norm ( k -- x )
Matrix operations

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Vocabulary
math.vectors

Inputs

k	a sequence

Outputs

x	a non-negative real number

Generic word contract
Computes the norm (size) of k in 𝑙₁ (L^1) vector space, usually written ∥･∥₁.

Examples

USING: math.vectors prettyprint ; { 1 2 3 4 } l1-norm .
10

See also
norm-sq, norm, l-infinity-norm, p-norm

Definition

USING: math sequences ;

IN: math.vectors

: l1-norm ( k -- x ) [ abs ] map-sum ; inline