ISO 24617-4:2014

Overview

ISO 24617-4:2014 - Language resource management - Semantic annotation framework (SemAF) - Part 4: Semantic roles (SemAF‑SR) defines a consensual annotation scheme for semantic roles. It provides a metamodel, terminology and guidance for marking the role a participant plays in an eventuality (event, state, action) as expressed mainly by verbs and other predicative elements (nominalizations, nouns, adjectives, predicate modifiers). The standard supports interoperable semantic role annotation (SR / SRL) across corpora and tools while explicitly excluding the predicating role of adverbs and the use of coercion.

Key technical topics and requirements

• Core terminology and formal units: precise definitions for arguments, predicates, predicate-argument structures, entities, participants, eventualities and semantic roles.
• Metamodel for semantic role annotation: abstract/concrete specifications for representing roles and their relations (see Clause 6 and Annex C for annotation language syntax).
• Eventuality frames: generalized frame-based specifications linking predicates to expected arguments and semantic roles.
• Criteria and guidelines: methods for distinguishing semantic roles, handling fuzzy boundaries, inheritance and multiple classification (Clauses 6–7).
• Interoperability & mappings: guidance for mapping existing frameworks (FrameNet, VerbNet, PropBank, LIRICS, EngVallex) to the ISO metamodel and for developing new role frameworks for languages or domains (Clause 8, Annex B).
• Normative and informative material: Annex A lists the ISO semantic roles specification; Annex B reviews existing frameworks; Annex C describes the annotation language.

Practical applications

ISO 24617-4:2014 is directly applicable to:

• Corpus annotation and building gold-standard datasets for semantic role labelling (SRL).
• NLP pipelines for information extraction, question answering, event extraction, semantic parsing and machine translation where consistent participant-role semantics are needed.
• Lexicon and frame development (linking word senses to eventuality frames).
• Tool interoperability and resource sharing, enabling mappings across FrameNet, PropBank and VerbNet-style resources.
• Research in computational linguistics, semantic web, and dialogue systems that require standardized role semantics.

Who should use this standard

• Computational and corpus linguists, language resource developers, annotation project managers, and SRL tool builders.
• Standards bodies, academic researchers and industry teams aiming for consistent, interoperable semantic annotations across languages and domains.

Related standards / ecosystem

• ISO 24617 series (SemAF parts for Time, Dialogue Acts, Discourse Structure, Spatial information)
• FrameNet, VerbNet, PropBank, EngVallex, LIRICS (frameworks referenced for mappings)

Using ISO 24617-4:2014 (SemAF‑SR) improves annotation consistency, enables cross-resource mappings, and supports robust SRL applications across NLP tasks.