Struct MetaFeatures 

pub struct MetaFeatures {
    pub values: Array1<f64>,
}

A fixed-length, real-valued description of an optimization task.

The values are stored in canonical order (see the module-level documentation and FEATURE_NAMES); named accessors document the meaning of each entry.

Fields

values: Array1<f64>

The raw (un-standardized) feature values, length NUM_FEATURES.

Implementations

impl MetaFeatures

pub fn from_values(values: Array1<f64>) -> Result<Self>

Wrap a raw feature vector, validating its length.

pub fn as_array(&self) -> &Array1<f64>

The raw feature values.

pub fn names() -> [&'static str; 9]

Feature names in index order.

pub fn log_dimension(&self) -> f64

ln(dim + 1) — the (log) problem dimensionality.

pub fn grad_norm_mean(&self) -> f64

Mean gradient L2-norm across the probe path.

pub fn grad_norm_cv(&self) -> f64

Coefficient of variation of the gradient L2-norm across the probe path.

pub fn grad_sparsity(&self) -> f64

Average fraction of gradient components that are effectively zero.

pub fn mean_log_curvature(&self) -> f64

ln(1 + mean directional curvature).

pub fn log_condition_number(&self) -> f64

ln(max directional curvature / min directional curvature) — condition-number proxy.

pub fn direction_stability(&self) -> f64

Mean cosine similarity between successive gradients along the descent path.

pub fn noise_estimate(&self) -> f64

Mean per-component coefficient of variation of repeated gradient samples.

pub fn log_param_scale(&self) -> f64

ln(1 + RMS(params)) — the magnitude/scale of the parameters.

Trait Implementations

impl Clone for MetaFeatures

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 MetaFeatures

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MetaFeatures

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for MetaFeatures

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for MetaFeatures

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MetaFeatures