Struct FeatureVector 

pub struct FeatureVector { /* private fields */ }

A named feature snapshot at a single point in time.

Constructed via FeatureVectorBuilder then finalized into FeatureVector.

Implementations

impl FeatureVector

pub fn len(&self) -> usize

Returns the number of features.

pub fn is_empty(&self) -> bool

Returns true if no features have been added.

pub fn names(&self) -> &[String]

Returns a slice of feature names in insertion order.

pub fn raw_values(&self) -> &[f64]

Returns raw (un-normalized) values in insertion order.

pub fn normalization(&self) -> Normalization

Returns the normalization mode.

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

Returns the raw value for a feature by name, or None if not found.

pub fn to_normalized_vec(&self) -> Vec<f64>

Normalizes raw values according to the configured Normalization mode and returns them as a Vec<f64>.

• Normalization::None: returns raw values unchanged.
• Normalization::ZScore: subtracts mean and divides by std dev. Zero-variance features → 0.0.
• Normalization::MinMax: scales to [0, 1]. Constant features → 0.0.

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.

impl<const N: usize> From<&[f64; N]> for FeatureVector

Implements construction from a fixed-size array reference.

Creates a FeatureVector with auto-generated names "f0", "f1", … and Normalization::None.

fn from(arr: &[f64; N]) -> Self

Converts to this type from the input type.

impl From<FeatureVector> for Vec<f64>

Implements Into<Vec<f64>> by applying normalization.

fn from(fv: FeatureVector) -> Vec<f64>

Converts to this type from the input type.