  Given the challenge of giant knowledge graphs created by major eco-nomic
actors, which could virtually replace research in the Humani-ties and Social
Sciences (HSS) in responding to public concerns, thequestion arises of how to
increase the value of research data throughtheir publication and networking,
applying the FAIR principles. Bothan epistemological and a semantic analysis
show that the most rel-evant part of research data is factual information,
understood as arepresentation of the objects observed by the scientific
disciplines,their properties and their relationships.This rich universe of
information will be made understandable andtherefore reusable through the
application of foundational ontologiesand a methodology based on the
distinction between different levelsof abstraction, allowing the collective
development of one or moreshared and reusable domain ontologies. This vision is
being carriedout around the CIDOC CRM, as core ontology, and Semantic Datafor
Humanities and Social Sciences (SDHSS), as a high-level exten-sion of it, as
well as an ecosystem of sub-domain extensions that canbe easily managed through
the ontome.net application. This willresult in an interoperability that is
semantically richer than the sim-ple alignment of ontologies and less costly in
terms of resources, andabove all adapted to the scientific and humanistic
project of the HSS.
