Selected work / Semantic infrastructure
From documents
to connected knowledge.
A reusable model for entities, events and relationships, with Barcelona as the first regional implementation.
A shared model, regional sources
Global sources such as Wikidata combine with local institutions, media and cultural agendas. The aim is to connect references across documents and languages, keeping source evidence and regional context.
Explore the current implementation
The demo is the place to inspect the current system. A stable universal API and wider regional coverage are development goals.
A platform for more cities
Development of a universal platform for other cities in the region, informed by the ongoing collaboration with DondeGo. Regional expansion remains in development.
Global knowledge. Local context.
Global sources
Wikidata · OpenStreetMap
Local sources
Municipal information · Local media · Cultural agendas
Shared semantic core
Entities · Relationships · Source evidence · Time
API & application adapters
Document and city exports in the demo; a stable universal API remains in development.
A real document. Inspectable evidence.
The demo processes a DondeGo article about the planned Lloreda library in Badalona. The selected output below shows a document, named entities, an external identifier and a relationship with its evidence.
Selected fields from the public demo response, checked on 22 October 2026. The demo includes reference-guided mappings and unresolved duplicates; this snapshot demonstrates traceability, not fully automatic extraction or a finished production API.
{
"document": {
"title": "Badalona da el primer paso para construir la nueva biblioteca de Lloreda",
"source_url": "https://dondego.es/barcelona/news/badalona-impulsa-una-nueva-biblioteca-en-lloreda-y-transforma-el-barrio/"
},
"entity": {
"name": "Badalona",
"identifiers": {
"wikidata": "Q15468",
"osm": {
"type": "relation",
"id": "347954"
}
}
},
"relationship": {
"subject": "Biblioteca de Lloreda",
"predicate": "entrance_on",
"object": "Passeig del Riu Corb",
"provenance": {
"kind": "article",
"claim_kind": "asserted",
"source": "dondego-dev-file",
"source_name": "DondeGo dev text file",
"source_url": "https://dondego.es/barcelona/news/badalona-impulsa-una-nueva-biblioteca-en-lloreda-y-transforma-el-barrio/",
"source_record_id": "https://dondego.es/barcelona/news/badalona-impulsa-una-nueva-biblioteca-en-lloreda-y-transforma-el-barrio/",
"observed_at": "2026-08-18T20:32:56.520056+00:00"
},
"evidence_url": "/api/semantic/entities/biblioteca-de-lloreda/evidence/entrance_on/?object=passeig-del-riu-corb"
}
}