Enum DtlError 

pub enum DtlError {
    EmptyTrainingSet,
    FeatureDimensionMismatch {
        expected: usize,
        got: usize,
    },
    ModelNotTrained,
    UnknownLabel(String),
    FeatureNamesMismatch {
        names: usize,
        dim: usize,
    },
    Arithmetic(String),
}

Errors produced by DecisionTreeLearner.

Variants

EmptyTrainingSet

Training set is empty.

FeatureDimensionMismatch

Feature vector has wrong dimensionality.

Fields

expected: usize

got: usize

ModelNotTrained

Tree has not been trained yet.

UnknownLabel(String)

Class label not found.

FeatureNamesMismatch

Feature names have wrong count.

Fields

names: usize

dim: usize

Arithmetic(String)

Internal arithmetic error (e.g. NaN).

Trait Implementations

impl Clone for DtlError

fn clone(&self) -> DtlError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DtlError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DtlError

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for DtlError

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

Formats the value using the given formatter.

impl Error for DtlError

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.

impl PartialEq for DtlError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for DtlError

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 DtlError