ppls (version 2.0.0)

normalize.vector: Normalize a Numeric Vector to Unit Length

Description

Returns the input vector normalized to have unit Euclidean norm (i.e., length equal to 1).

Usage

normalize.vector(v)

Value

A numeric vector of the same length as v, with unit norm.

Arguments

v

A numeric vector.

Details

This function performs: $$v_\text{normalized} = \frac{v}{\sqrt{\sum v_i^2}}$$ It is primarily used to normalize weight vectors or component directions in Partial Least Squares algorithms.

Note: If the input vector has zero norm, the function returns NaN due to division by zero.

See Also

penalized.pls, penalized.pls.default, penalized.pls.kernel

Examples

v <- c(3, 4)
normalize.vector(v)  # returns c(0.6, 0.8)

v2 <- rnorm(10)
sqrt(sum(normalize.vector(v2)^2))  # should be 1