Struct FeatureVectorBuilder 

pub struct FeatureVectorBuilder { /* private fields */ }

Builder for FeatureVector.

Example

use fin_primitives::ml::{FeatureVectorBuilder, Normalization};

let fv = FeatureVectorBuilder::new(Normalization::ZScore)
    .add("rsi", 55.3).unwrap()
    .add("adx", 28.1).unwrap()
    .add("hurst", 0.6).unwrap()
    .build();

assert_eq!(fv.len(), 3);
let normalized: Vec<f64> = fv.into();
assert_eq!(normalized.len(), 3);

Implementations

impl FeatureVectorBuilder

pub fn new(normalization: Normalization) -> Self

Creates a new builder with the specified normalization mode.

pub fn add(self, name: impl Into<String>, value: f64) -> Result<Self, FinError>

Adds a named feature with a raw f64 value.

Errors

Returns FinError::InvalidInput if:

• name is empty or contains only whitespace.
• A feature with the same name already exists.

pub fn add_all(self, features: &[(&str, f64)]) -> Result<Self, FinError>

Adds multiple features from a slice of (name, value) pairs.

Errors

Propagates errors from Self::add.

pub fn build(self) -> FeatureVector

Finalizes the builder and returns a FeatureVector.

Trait Implementations

impl Debug for FeatureVectorBuilder

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

Formats the value using the given formatter.

impl Default for FeatureVectorBuilder

fn default() -> Self

Returns the “default value” for a type.