Enum MattenMlprepError 

#[non_exhaustive]
pub enum MattenMlprepError {
    DynamicTensor,
    ExpectedMatrix {
        shape: Vec<usize>,
    },
    InvalidRatio(f64),
    EmptySplit {
        rows: usize,
        train_ratio: f64,
    },
    ZeroVariance {
        column: usize,
    },
    Matten(MattenError),
}

Errors produced by matten-mlprep preprocessing functions.

#[non_exhaustive] so future variants are not a breaking change.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

DynamicTensor

A dynamic (Element) tensor was passed. Convert it to a numeric tensor first with Tensor::try_numeric().

ExpectedMatrix

The input was not rank-2. matten-mlprep operates only on matrices with the convention rows = samples, columns = features.

Fields

shape: Vec<usize>

The shape that was provided.

InvalidRatio(f64)

train_ratio was not a finite value in the open interval (0.0, 1.0).

EmptySplit

The requested split would leave the train set empty (floor(rows * train_ratio) == 0).

Fields

rows: usize

Number of rows (samples) in the input.

train_ratio: f64

The requested train ratio.

ZeroVariance

A column has zero variance / range and therefore cannot be scaled.

Fields

column: usize

The index of the offending column (feature).

Matten(MattenError)

Core matten rejected a constructed result.

Trait Implementations

impl Debug for MattenMlprepError

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

Formats the value using the given formatter.

impl Display for MattenMlprepError

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

Formats the value using the given formatter.

impl Error for MattenMlprepError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.