Enum TreeError 

pub enum TreeError {
    SplitterError(SplitterError),
    CriterionError(CriterionError),
    DataError(DataError),
    FeatureMatrixError(FeatureMatrixError),
    BuildingError(String),
    ConfigError(String),
}

Errors that can occur during tree construction and manipulation.

This enum aggregates errors from all tree-related submodules, providing a unified error type for tree operations. It uses the #[from] attribute to enable automatic conversion from submodule-specific errors.

Error Variants

• SplitterError: Failed to find optimal split (e.g., insufficient samples)
• CriterionError: Error computing split gain or leaf values
• DataError: Invalid training data structure
• FeatureMatrixError: Problem accessing feature values
• BuildingError: General tree construction failure
• ConfigError: Invalid tree configuration

Conversions

TreeError can be converted to CoreError for integration with the main boosting pipeline.

Variants

SplitterError(SplitterError)

CriterionError(CriterionError)

DataError(DataError)

FeatureMatrixError(FeatureMatrixError)

BuildingError(String)

ConfigError(String)

Trait Implementations

impl Debug for TreeError

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

Formats the value using the given formatter.

impl Display for TreeError

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

Formats the value using the given formatter.

impl Error for TreeError

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 From<CriterionError> for TreeError

fn from(source: CriterionError) -> Self

Converts to this type from the input type.

impl From<DataError> for TreeError

fn from(source: DataError) -> Self

Converts to this type from the input type.

impl From<FeatureMatrixError> for TreeError

fn from(source: FeatureMatrixError) -> Self

Converts to this type from the input type.

impl From<SplitterError> for TreeError

fn from(source: SplitterError) -> Self

Converts to this type from the input type.

impl From<TreeError> for CoreError

Conversion from tree errors to core library errors.

This From implementation enables seamless error propagation from tree construction up to the main crate::core::CoreError type used by the gradient booster.

All tree errors are converted to CoreError::TrainingError with a descriptive message.

fn from(err: TreeError) -> Self

Converts to this type from the input type.

impl From<TreeError> for GBRTError

fn from(source: TreeError) -> Self

Converts to this type from the input type.