Abstract

Overview

ISO 24623-1:2018 - Language resource management: Corpus Query Lingua Franca (CQLF) - Part 1: Metamodel - defines an abstract metamodel for classifying and comparing corpus query languages (QLs). It provides a modular, coarse‑grained framework (CQLF classes, levels and modules) to locate any corpus QL within a feature matrix. The document illustrates the model using the Single‑stream class (a single primary data stream) and distinguishes three CQLF levels: Linear, Complex and Concurrent. ISO 24623-1:2018 focuses on classification and interoperability scope rather than prescribing concrete query syntax or covering multi‑stream (multimodal or parallel) query languages in detail.

Key topics and technical requirements

CQLF metamodel structure: top‑level CQLF classes (Single‑stream, Multi‑stream), nested levels (Linear, Complex, Concurrent) and finer modules that reflect data‑model characteristics.
Linear level modules: plain‑text handling, segmentation, and simple annotation (tabular annotations).
Complex level modules: hierarchical annotation (syntactic trees), dependency annotation (dependency relations), and containment relationships (character span containment).
Concurrent level: addresses multiple, potentially conflicting annotations over the same spans (concurrent annotations, stand‑off techniques).
Core terminology defined: annotation, stand‑off annotation, character span, token, and primary data.
Conformance concept: a CQLF implementation is a query language that has been analysed and located in the CQLF matrix; the standard provides criteria for that classification (coarse‑grained, not full serialization rules).
Normative references: ISO 24611 (MAF), ISO 24612 (LAF), ISO 24615‑1 (SynAF) - used for alignment with existing language resource frameworks.

Applications and who uses it

ISO 24623-1 is practical for:

Corpus linguists and researchers evaluating or comparing corpus query languages.
Language technology developers designing QLs, query engines, or annotation tools.
Data architects and archivists choosing data architectures (single‑stream vs multi‑stream) and ensuring interoperability.
Project managers deciding on query tools early in projects to avoid costly redesigns later. Practical uses include classifying a QL’s expressivity (e.g., supports hierarchical or dependency queries), guiding tool selection, and informing design decisions for annotation layering and stand‑off annotation strategies.

Related standards

ISO 24612 - Linguistic Annotation Framework (LAF)
ISO 24611 - Morpho‑syntactic Annotation Framework (MAF)
ISO 24615‑1 - Syntactic Annotation Framework (SynAF), Part 1

ISO 24623-1:2018 is a foundation for assessing corpus query language interoperability and for guiding informed choices in corpus query design and implementation.

SIST ISO 24623-1:2018 PDF

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Applications and who uses it

Related standards

Технические детали

ISO 24623-1:2018

Language resource management — Corpus query lingua franca (CQLF) — Part 1: Metamodel

SIST ISO 24611:2013

Language resource management -- Morpho-syntactic annotation framework (MAF)

SIST ISO 24612:2013

Language resource management -- Linguistic annotation framework (LAF)

SIST ISO 24615-1:2018

Language resource management -- Syntactic annotation framework (SynAF) -- Part 1: Syntactic model