Struct ChainFeatures 

pub struct ChainFeatures {

    pub canonical_form: String,
    pub variations: Vec<String>,
    pub chain_length: usize,
    pub entity_type: Option<String>,
    pub first_mention_position: usize,
    pub last_mention_position: usize,
    pub mention_spread: usize,
    pub relative_spread: f64,
    pub named_count: usize,
    pub nominal_count: usize,
    pub pronominal_count: usize,
    pub pronoun_ratio: f64,
    pub mean_position: f64,
    pub positional_entropy: f64,
    pub mean_confidence: f64,
    pub min_confidence: f64,
    pub max_confidence: f64,
    pub centroid_embedding: Option<Vec<f32>>,
}

Aggregate features for a coreference chain (group of mentions referring to same entity).

Fields

canonical_form: String

Canonical/representative surface form.

variations: Vec<String>

All surface form variations observed.

chain_length: usize

Number of mentions in the chain.

entity_type: Option<String>

Entity type (from first/canonical mention).

first_mention_position: usize

Position of first mention (character offset).

last_mention_position: usize

Position of last mention (character offset).

mention_spread: usize

Spread: distance from first to last mention.

relative_spread: f64

Spread as fraction of document length.

named_count: usize

Count of named mentions.

nominal_count: usize

Count of nominal mentions.

pronominal_count: usize

Count of pronominal mentions.

pronoun_ratio: f64

Fraction of mentions that are pronominal.

mean_position: f64

Mean position of mentions.

positional_entropy: f64

Positional entropy (how spread out are mentions?).

mean_confidence: f64

Mean confidence across mentions.

min_confidence: f64

Min confidence.

max_confidence: f64

Max confidence.

centroid_embedding: Option<Vec<f32>>

Centroid embedding (mean of mention embeddings, if available).

Implementations

impl ChainFeatures

pub fn from_mentions(mentions: &[&Entity], text_len: usize) -> Self

Compute chain features from a group of related entity mentions.

pub fn with_centroid(self, embedding: Vec<f32>) -> Self

Set the centroid embedding.

pub fn is_singleton(&self) -> bool

Is this a singleton chain (single mention)?

pub fn is_mostly_pronominal(&self) -> bool

Is this chain mostly pronominal?

pub fn variation_count(&self) -> usize

Number of unique surface form variations.

Trait Implementations

impl Clone for ChainFeatures

fn clone(&self) -> ChainFeatures

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChainFeatures

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

Formats the value using the given formatter.