anno-core

Stable data model and invariants for anno: entities, spans, tracks, signals, coreference chains, and corpus types.

This crate intentionally avoids CLI and evaluation dependencies so it can serve as the shared type foundation across the anno workspace.

Install

[dependencies]
anno-core = "0.3"

Key types

Type	Purpose
`Entity`	A named entity with span, type, confidence, and provenance
`Span`	Character-offset range (Unicode scalar values, not bytes)
`Signal` / `Track`	Layered extraction outputs with provenance tracking
`CorefChain` / `CorefDocument`	Within-document coreference clusters
`Identity`	Cross-document entity identity
`Corpus`	Collection of grounded documents
`Relation`	Typed `(head, relation, tail)` triple

Usage

use anno_core::{EntityBuilder, EntityType};

let entity = EntityBuilder::new("Sophie Wilson", EntityType::Person)
    .span(0, 14)
    .confidence(0.95)
    .build();

assert_eq!(entity.text, "Sophie Wilson");
assert_eq!(entity.entity_type, EntityType::Person);

Offset invariant

All spans use character offsets (Unicode scalar values), not byte offsets. See the CONTRACT for details.

License