Struct FeatureVector 

pub struct FeatureVector {
    pub names: Vec<String>,
    pub values: Vec<f64>,
}

A named feature vector for ML pipelines.

Example

use fin_primitives::ml_features::FeatureVector;

let fv = FeatureVector::new(
    vec!["momentum".into(), "rsi".into()],
    vec![0.02, 65.0],
).unwrap();
assert_eq!(fv.get("rsi"), Some(65.0));

Fields

names: Vec<String>

Feature names in the same order as values.

values: Vec<f64>

Feature values.

Implementations

impl FeatureVector

pub fn new(names: Vec<String>, values: Vec<f64>) -> Result<Self, FinError>

Constructs a FeatureVector.

Errors

FinError::InvalidInput if names and values have different lengths.

pub fn get(&self, name: &str) -> Option<f64>

Returns the value for the given feature name, or None.

pub fn push(&mut self, name: impl Into<String>, value: f64)

Append a feature to the vector.

pub fn len(&self) -> usize

Number of features.

pub fn is_empty(&self) -> bool

Returns true if no features are present.

Trait Implementations

impl Clone for FeatureVector

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FeatureVector

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.