Browse existing knowledge graphs and submissions
Filter
No filters applied - showing all KGs
Show KGs which need love (less than 10 pairs)
Camera dei Deputati, Italy
Economies and Finances,
Law,
Sociology
SPARQL endpoint describing the activities of the the Italian Chamber of Deputies
Dati Cultura
Archaeology and Prehistory,
Architecture and Space Management,
Cultural Heritage and Museology
A linked open data platform by Italy's Ministry of Culture (MiC) providing machine-readable access to the nation's cultural heritage information. Built on the ArCo (Architecture of Knowledge) ontology, it offers standardized, interoperable datasets about cultural sites, events, and artifacts. The platform features SPARQL endpoints, APIs, and downloadable RDF datasets to support applications for citizens, researchers, students, and tourists. Data is published under CC-BY 4.0 license and follows DCAT-AP-IT specifications, enabling interoperability across European cultural data infrastructures.
DNB KB
Cross Domain
The DNB Knowledge Graph at https://sparql.dnb.de/dnbgnd is a linked-data service from the German National Library (Deutsche Nationalbibliothek) that unifies GND authority data (Gemeinsame Normdatei) with national bibliography metadata in a semantically rich RDF graph. It lets users perform SPARQL queries over interconnected entities—such as people, works, subjects, and bibliographic records—linking normative identifiers with bibliographic information to support complex discovery and analysis. All data are published as open linked data, enabling integration with the wider semantic web and bibliographic ecosystems.
EHRI - KG
History,
Cultural Heritage and Museology
The EHRI Knowledge Graph (EHRI-KG) is a Linked Open Data (LOD) representation of the EHRI Portal’s metadata about Holocaust-related archival sources. Developed to complement the EHRI Portal, it transforms archival descriptions—such as countries, institutions, collection records, and more—into a semantically enriched, interlinked graph.
Europeana
Cultural Heritage and Museology
Europeana is the EU's cultural heritage platform. It contains metadata about more than 50 million digitised cultural heritage items (from books and paintings to 3D objects and audiovisual material), contributed by more than 3,700 institutions.
GESIS KG
Sociology
The GESIS Knowledge Graph (GESIS KG) is an integrated research knowledge graph that captures and interlinks metadata of scientific resources—such as datasets, publications, variables, and survey instruments—along with entities like authors and social science concepts, from GESIS Search.
Linking Latin (LiLa)
Linguistics
LiLa (Linking Latin) is a Linked Data knowledge graph that interconnects heterogeneous Latin linguistic resources through a shared semantic model. It represents lemmas as central nodes that link corpora, lexical databases, morphological descriptions, and NLP annotations, enabling cross-resource interoperability. By assigning persistent identifiers and formal relations, LiLa harmonizes diverse formats and annotation schemes into a unified graph structure. This lemma-centric knowledge graph supports complex queries and integrative analysis, facilitating reuse, comparison, and enrichment of Latin language data for computational linguistics and digital humanities research.
Nomisma
Archaeology and Prehistory,
History,
Cultural Heritage and Museology
Nomisma knowledge graph is a Linked Open Data (LOD) resource developed by the American Numismatic Society (ANS) in collaboration with an international community of scholars. It provides stable URIs and a formal RDF ontology for numismatic concepts—such as coins, typologies, mints, and hoards—enabling structured representation of numismatic information and interlinking with external datasets. This knowledge graph supports semantic integration, SPARQL querying, and bulk downloads in multiple RDF serializations, facilitating research, interoperability, and reuse of numismatic data across digital projects and collections.
OpenCitations Meta
Cross Domain
OpenCitations Meta is a bibliographic metadata database for all publications referenced in the OpenCitations Index. It includes key metadata like titles, authors, publication dates, identifiers, publication venues, volume/issue/page numbers, and actors like editors and publishers, along with their persistent identifiers when available.
PeriodO
Archaeology and Prehistory,
Art and Art History,
Cultural Heritage and Museology
PeriodO (Periods, Organized) is a Linked Open Data knowledge graph and public-domain gazetteer of scholarly definitions for historical, art-historical, and archaeological time periods. It assigns stable identifiers and structured spatiotemporal extents to period concepts from published sources, linking temporal and geographic information and preserving differing scholarly usages. PeriodO lets researchers and systems compare, integrate, and link datasets that use divergent period definitions, with each entry citing its authority and temporal/geographic bounds. The data are available as RDF in JSON-LD and Turtle serializations and (in a degraded form) as CSV.
PHAROS
Art and Art History,
Cultural Heritage and Museology
PHAROS (via artresearch.net) is the International Association of Photo Archives — a consortium of leading European and North American art-historical photographic archives that unifies tens of millions of images of art, architecture, and documentary photography with rich scholarly metadata. Founded to advance access, standardization, and digital humanities research, PHAROS maps and links dispersed collections using CIDOC-CRM and ResearchSpace technologies, enabling consolidated searching, image-to-image comparison, and interdisciplinary scholarship. Its Artresearch.net platform launched in 2025, offering free, centralized access to an unprecedented visual and data resource for art history research and teaching.
Polifonia MEETUPS KG
Musicology and Performing Arts
The MEETUPS knowledge graph (Musical Meetups Knowledge Graph, MMKG) is a structured Linked Open Data resource developed in the EU-funded Polifonia project. It encodes evidence of historical encounters and collaborations between people in the European musical world (c. 1800–1945), extracted from tens of thousands of artist biographies using NLP and knowledge engineering. The graph models participants, places, dates, and purposes of musical meetups according to the Meetups Ontology, enabling rich queries about who met whom, where and why, for research, teaching and digital humanities applications via a SPARQL endpoint and web tools.
Polifonia Organs KG
Musicology and Performing Arts
The ORGANS knowledge graph contains data on c. 2000 Dutch organs of historic importance. The data has been extracted from the Dutch ‘Organ Encylopaedia’. It contains information on organs, locations, builders, maintenance and modifications, and stop lists. The knowledge graph uses a temporary vocabulary that will be replaced by the Polifonia Ontology Network in the next version.
SKKG
Art and Art History,
History,
Cultural Heritage and Museology
The SKKG Knowledge Graph represents the diverse collections of the Stiftung für Kunst, Kultur und Geschichte, linking artworks, cultural heritage objects, historical artefacts, and curiosities across themes, periods, and provenance. With a strong focus on Swiss art of the 19th and 20th centuries and everyday European life, it models relationships between objects, historical events, exhibitions, and loans. The KG supports discovery of items in the “Sammlung digital” online catalogue and tracks national and international loans as well as SKKG-funded projects, providing a structured view of one of Switzerland’s largest private collections.
