ISO 24613-5:2022

Overview

ISO 24613-5:2022 - Lexical base exchange (LBX) serialization specifies an XML serialization for the Lexical Markup Framework (LMF). LBX defines XML constructs and constraints to represent LMF core classes and the MRD and etymological extensions, ensuring LMF model instances can be exchanged and validated using W3C XML Schema 1.1. The document maps LMF classes (for example, LexicalResource, Lexicon, LexicalEntry) to LBX XML elements, prescribes data category selections and value lists, and provides examples and appendix material for implementation.

Key topics and technical requirements

• Scope and compliance
  • Serializes ISO 24613 core model (Part 1), MRD extension (Part 2) and etymological extension (Part 3).
  • Requires compliance with W3C XML Schema 1.1 and LMF cardinalities.
• LBX constructs
  • Element-level mappings for central classes: <LexicalResource>, <GlobalInformation>, <Lexicon>, <LexicalEntry>, orthographic and form representations, sense and definition elements.
  • Support for MRD constructs: word forms, stems, related forms, translations, examples and subject fields.
  • Etymology support: classes such as Etymology, Etymon, EtyLink, CognateSet.
• Mechanisms and extensions
  • Cross-referencing mechanisms (CrossREF) to external media and virtual lexical resources (e.g., @lexicalResourceID).
  • Feature structure implementation, label representation (<LBL>), rendering hints via @rend.
  • XML namespace usage (example: xmlns="http://www.LexicalBaseExchange.org/2021/schema") and datatype conformity to XML Schema Part 2.
• Documentation and examples
  • Informative annexes for LBX data category selection, feature-structure implementation and LBX examples.

Practical applications and users

ISO 24613-5:2022 is intended for teams and projects that need interoperable lexical data exchange, including:

• Computational linguists and NLP engineers building lexica for parsers, taggers and language models.
• Lexicographers and dictionary publishers converting MRDs to validated XML.
• Language resource managers and digital humanities projects harmonizing multilingual lexical datasets.
• Software developers implementing lexical databases, import/export tools, and interoperability layers.
• Terminologists, localization engineers and academic researchers** who require standardized, schema-validated lexical representations.

Benefits include improved interoperability, validated XML serialization for lexical resources, clearer mapping of etymological and MRD data, and support for linking to external media and database partitioning.

Related standards

• ISO 24613-1:2019 (LMF core model)
• ISO 24613-2:2020 (MRD model)
• ISO 24613-3:2021 (Etymological extension)
• ISO 15924 (script codes), IETF BCP 47 (language tags), W3C XML 1.1

Keywords: ISO 24613-5:2022, LBX serialization, Lexical Markup Framework, LMF, XML schema, MRD, etymology, lexical resource exchange, language resource management.