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# CHANGELOG for HED lang library schema

## Initial release October 28, 2024
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- Ian Callanan (@IanCa)
- Monique Denissen (@monique2208)
- Florian Hutzler
- Scott Makeig (@smakeig)
- Scott Makeig (@smakeig)
- Bernhard Pöll
- Kay Robbins (@VisLab)
- Dung Truong (@dungscout96)
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34 changes: 30 additions & 4 deletions library_schemas/lang/README.md
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# HED LANG Schema
LANG:[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.13987483.svg)](https://doi.org/10.5281/zenodo.13987483)

The HED Language library schema (HED LANG Schema) contains vocabulary for annotating language experiments in cognitive science. The schema allows for detailed annotation of neuroimaging experiments that involve language events, from carefully controlled experiments addressing specific questions in the domain of language processing, to more complex naturalistic paradigms involving written or spoken language.
# HED LANG Library Schema

HED LANG allows for annotation of language stimuli on different levels through the orthogonal definition of Language-items and Language-item-properties. Full sentences can be annotated with sentence-level characteristics, while the individual words in the sentence can be associated with word-level characteristics, and so on. Annotation possibilities are extensive and cover characteristics found across languages to allow for between language comparisons.
The HED Language library schema (HED LANG Schema) contains vocabulary for annotating language experiments in cognitive science. The schema allows for detailed annotation of neuroimaging experiments that involve language events. It is suitable for experiments using carefully controlled experiment stimuli to address specific questions in the domain of language processing, and for experiments using complex naturalistic paradigms involving written or spoken language.

The current prerelease of the schema is primarily centered around written language and current development focuses on adding grammatical aspect characteristics and spoken word characteristics into the vocabulary.
HED LANG allows for annotation of language stimuli on different levels through the orthogonal definition of Language-items and Language-item-properties. Full sentences can be annotated with sentence-level characteristics, and individual words can be associated with word-level characteristics. Annotation possibilities are extensive and cover characteristics found across languages to allow for comparisons between languages.

The current release of the schema is primarily centered around written language, and morphosyntactic word properties. The schema is open to extension.

## Example annotations

You can find several example annotations of recent work in psycholinguistics in our [preprint](https://doi.org/10.31234/osf.io/bjz9q).

Additionally, we have added annotations to several datasets which are publicly available on OpenNeuro. Their annotated versions (and links to the original) can be found here:

- [ds001894](https://data.anc.plus.ac.at/bids-datasets/openneuro/ds001894)
- [ds002155](https://data.anc.plus.ac.at/bids-datasets/openneuro/ds002155)
- [ds002382](https://data.anc.plus.ac.at/bids-datasets/openneuro/ds002382)
- [ds003126](https://data.anc.plus.ac.at/bids-datasets/openneuro/ds003126)

## Viewing HED LANG

The HED LANG library schema can be viewed using the [**HED Schema Browser**](https://www.hedtags.org/display_hed.html).

## References

Denissen, M., Pöll, B., Robbins, K., Makeig, S., & Hutzler, F. (2024, September 20). HED LANG – A Hierarchical Event Descriptors library extension for annotation of language cognition experiments. [https://doi.org/10.31234/osf.io/bjz9q](https://doi.org/10.31234/osf.io/bjz9q)

## Stable links to HED LANG

- [**Stable directory link for schema lookup**](https://github.com/hed-standard/hed-schemas/tree/main/library_schemas/lang/hedxml)
- [**Stable link for latest version**](https://raw.githubusercontent.com/hed-standard/hed-schemas/main/library_schemas/lang/hedxml/HED_lang_Latest.xml)
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Prefix ID
dc: contributor
dc: creator
dc: date
dc: description
dc: format
dc: identifier
dc: language
dc: publisher
dc: relation
dc: source
dc: subject
dc: title
dc: type
foaf: homepage
rdfs: comment
Prefix ID
dc: contributor
dc: creator
dc: date
dc: description
dc: format
dc: identifier
dc: language
dc: publisher
dc: relation
dc: source
dc: subject
dc: title
dc: type
foaf: homepage
rdfs: comment
terms: license
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prefix namespace IRI definition
rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# The RDF namespace [RDF-CONCEPTS]
rdfs: http://www.w3.org/2000/01/rdf-schema#
xsd: http://www.w3.org/2000/10/XMLSchema# XML Schema Namespace [XMLSCHEMA11-2]
xml: http://www.w3.org/XML/1998/namespace
owl: http://www.w3.org/2002/07/owl# The OWL namespace [OWL2-OVERVIEW]
prov: http://www.w3.org/ns/prov# The PROV namespace [PROV-DM]
dc: http://purl.org/dc/elements/1.1/ The Dublin Core elements
terms: http://purl.org/dc/terms/ The Dublin Core terms
prefix namespace IRI definition
rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# The RDF namespace [RDF-CONCEPTS]
rdfs: http://www.w3.org/2000/01/rdf-schema#
xsd: http://www.w3.org/2000/10/XMLSchema# XML Schema Namespace [XMLSCHEMA11-2]
xml: http://www.w3.org/XML/1998/namespace
owl: http://www.w3.org/2002/07/owl# The OWL namespace [OWL2-OVERVIEW]
prov: http://www.w3.org/ns/prov# The PROV namespace [PROV-DM]
dc: http://purl.org/dc/elements/1.1/ The Dublin Core elements
terms: http://purl.org/dc/terms/ The Dublin Core terms
foaf: http://xmlns.com/foaf/0.1/ Friend-of-a-Friend http://xmlns.com/foaf/spec/
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