# José Emilio Labra Gayo

> Spanish researcher, Computer Scientist

**Wikidata**: [Q51602692](https://www.wikidata.org/wiki/Q51602692)  
**Source**: https://4ort.xyz/entity/jose-emilio-labra-gayo

## Summary
José Emilio Labra Gayo is a Spanish computer scientist and researcher affiliated with the University of Oviedo. He specializes in software engineering, programming languages, and the Semantic Web, and is the developer of tools such as ShEx-s and wdsub. His work focuses on the systematic development of software and semantic data validation.

## Biography
- **Born:** 1969, Oviedo, Spain
- **Nationality:** Spain
- **Education:** Escuela de Ingeniería Informática (Universidad de Oviedo)
- **Known for:** Development of ShEx-s (Shape Expressions Scala implementation) and Wikibase subsetting tools
- **Employer(s):** University of Oviedo
- **Field(s):** Computer Science, Software Engineering, Semantic Web, Programming Languages
- **Languages:** Spanish, English

## Contributions
José Emilio Labra Gayo has made significant contributions to the field of Semantic Web technologies and software engineering, particularly through the creation of open-source software tools designed to handle and validate large datasets.

He developed **ShEx-s**, a Scala implementation of Shape Expressions (ShEx), a language used for validating and describing the structure of RDF data. This tool aids in ensuring data quality and consistency within semantic web applications.

Additionally, he created **wdsub** and **sparkwdsub**, two software tools specifically designed for Wikibase Subsetting. These tools allow users to extract specific subsets of data from large Wikibase instances (such as Wikidata), facilitating easier management and analysis of focused data segments. He is an active participant in the semantic web community, evidenced by his participation in events like the **Wikimedia Hackathon 2019**.

## FAQs

### Q: What is José Emilio Labra Gayo's primary affiliation?
A: He is employed as a university teacher and researcher at the University of Oviedo in Spain.

### Q: What programming languages or technologies is he associated with?
A: He works within the realm of Computer Science with a focus on programming languages and software engineering. He specifically developed "ShEx-s" using Scala.

### Q: What tools has he developed for the Semantic Web?
A: He developed ShEx-s for RDF validation and wdsub/sparkwdsub for subsetting Wikibase data.

### Q: What is his educational background?
A: He was educated at the Escuela de Ingeniería Informática at the Universidad de Oviedo.

## Why They Matter
José Emilio Labra Gayo plays a crucial role in bridging the gap between theoretical computer science concepts—such as programming language design and software engineering—and practical data management on the Semantic Web. By implementing Shape Expressions in Scala (ShEx-s), he provided a robust tool for data validation, a critical requirement for the "Web of Data" where trust and structure are paramount.

Furthermore, his work on Wikibase subsetting (wdsub) addresses a major scalability challenge faced by users of massive open knowledge bases like Wikidata. By enabling the extraction of specific data slices, his tools empower researchers and developers to utilize Wikidata in environments where processing the entire dataset is impractical. His contributions support the ongoing effort to make linked data more accessible, valid, and useful for engineering applications.

## Notable For
- **Creator of ShEx-s:** Developing the Scala implementation for Shape Expressions, a standard for RDF validation.
- **Wikibase Tools:** Creating wdsub and sparkwdsub to solve data subsetting challenges in Wikibase environments.
- **Academic Role:** Serving as a professor and researcher at the University of Oviedo.
- **Semantic Web Research:** Contributing to the fields of Semantic Web and software engineering through both academic research and software development.

## Body

### Academic Background and Career
José Emilio Labra Gayo was born in 1969 in Oviedo, Spain. He pursued his higher education at the **Escuela de Ingeniería Informática** at the **Universidad de Oviedo**, where he established his professional career. He currently holds a position as a university teacher and researcher. His academic interests span across several domains including **software engineering**, **programming languages**, and **computer science**.

### Research and Development
Labra Gayo's research output includes the exploration of algorithms and statistical models used in machine learning, though his primary focus lies in software engineering and the Semantic Web. He is actively involved in the development of standards and tools that enhance data interoperability and validation.

#### Key Software Projects
*   **ShEx-s:** A Scala-based implementation of the Shape Expressions (ShEx) language, used to describe and validate the structure of RDF graphs.
*   **wdsub:** A software tool created to generate subsets of Wikibase data, making large knowledge bases more manageable.
*   **sparkwdsub:** An extension of his work on subsetting, likely utilizing Apache Spark for distributed processing of large-scale Wikibase data.

### Online Presence and Identifiers
Labra Gayo maintains a significant digital footprint across academic and developer platforms.
*   **Social Media:** He is active on Twitter (`@jelabra`) and Mastodon (`@jelabra@mastodon.social`).
*   **Developer Profiles:** His code repositories are available on GitHub under the username `labra`.
*   **Academic Identifiers:** He holds profiles on Google Scholar (`TGfRNZkAAAAJ`), Scopus (`8374489000`), and DBLP (`32/2604`). His ORCID/iD is associated with his research outputs.
*   **Wikimedia:** He uses the username `Jelabra` and participated in the **Wikimedia Hackathon 2019**.

## Schema Markup
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  "@type": "Person",
  "name": "José Emilio Labra Gayo",
  "alternateName": ["J.E.L. Gayo", "J.E. Labra-Gayo", "José Labra"],
  "jobTitle": ["University Teacher", "Researcher", "Computer Scientist"],
  "worksFor": {
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  "nationality": {
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  "birthDate": "1969",
  "birthPlace": {
    "@type": "Place",
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  },
  "alumniOf": {
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    "name": "Escuela de Ingeniería Informática (Universidad de Oviedo)"
  },
  "knowsAbout": [
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    "Semantic Web",
    "Programming Languages",
    "Shape Expressions",
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  ],
  "sameAs": [
    "http://labra.weso.es",
    "https://github.com/labra",
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    "https://scholar.google.com/citations?user=TGfRNZkAAAAJ",
    "https://dblp.org/pid/32/2604"
  ],
  "description": "Spanish computer scientist and researcher known for developing ShEx-s and Wikibase subsetting tools."
}

## References

1. Czech National Authority Database
2. [Source](http://labra.weso.es/)
3. [Source](http://labra.weso.es)
4. [Source](https://data.dnb.de/opendata/authorities-gnd-person_lds.rdf.gz)
5. [Source](https://www.mediawiki.org/w/index.php?title=Wikimedia_Hackathon_2019/Participant_List&oldid=3236449)
6. [Jose LABRA GAYO | Professor (Associate) | PhD | University of Oviedo, Oviedo | UNIOVI | Department of Computer Science](https://www.researchgate.net/profile/Jose-Labra-Gayo)