rustml::scaling

Trait rustml::scaling::ScaleVector [−] [src]

pub trait ScaleVector<T> {
    fn scale_by(&self, g: &Vec<Gaussian<T>>) -> Vec<T>;
}

Trait to scale a vector.

Required Methods

fn scale_by(&self, g: &Vec<Gaussian<T>>) -> Vec<T>

Scales the values of the vector by the parameters provided by the vector g.

For each value the following is done: the value at index i is subtracted by the mean of the Gaussian at index i and the result is divided by the standard deviation of the Gaussian at index i. This is done for each value in the vector and a new vector is returned with the result.

Example

use rustml::scaling::*;
use rustml::gaussian::*;

let gaussians = vec![
    Gaussian::new(2.0, 4.0),
    Gaussian::new(5.0, 16.0)
];

assert_eq!(
    [4.0, 7.0].scale_by(&gaussians), 
    vec![
        (4.0 - 2.0) / 2.0,
        (7.0 - 5.0) / 4.0
    ]
);

Implementors