Enum Difficulty 

pub enum Difficulty {
    Easy,
    Medium,
    Hard,
    Adversarial,
}

Difficulty level for NER examples.

Difficulty is subjective but useful for progressive evaluation:

• Start with Easy to verify basic functionality
• Progress to Medium for realistic performance estimates
• Use Hard/Adversarial for stress testing

Example

use anno_eval::eval::dataset::Difficulty;

let difficulty = Difficulty::Hard;
assert!(difficulty.is_challenging());

Variants

Easy

Simple entities, clear context, unambiguous

Medium

Multiple entities, some ambiguity, typical real-world

Hard

Complex sentences, nested entities, domain jargon

Adversarial

Edge cases, adversarial examples, intentionally tricky

Implementations

impl Difficulty

pub fn all() -> &'static [Difficulty]

Returns all difficulty levels in order.

pub fn is_challenging(&self) -> bool

Returns true if this is Hard or Adversarial.

pub fn score(&self) -> u8

Numeric difficulty score (0-3) for sorting/filtering.

Trait Implementations

impl Clone for Difficulty

fn clone(&self) -> Difficulty

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Difficulty

impl Debug for Difficulty

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

Formats the value using the given formatter.

impl Default for Difficulty

fn default() -> Difficulty

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Difficulty

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Difficulty

impl Hash for Difficulty

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Difficulty

fn eq(&self, other: &Difficulty) -> 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 Difficulty

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 Difficulty