







This page presents the ”Sampo” model, series of Linked Open Data services, and semantic portals (Hyvönen, 2022), based on six principles:
Cool URIs for the Semantic Web
OWL - Semantic Web Standards
The W3C Web Ontology Language (OWL) is a Semantic Web language designed to represent rich and complex knowledge about things, groups of things, and relations between things. OWL is a computational logic-based language such that knowledge expressed in OWL can be exploited by computer programs, e.g., to verify the consistency of that knowledge or to make implicit knowledge explicit. OWL documents, known as ontologies, can be published in the World Wide Web and may refer to or be referred from other OWL ontologies. OWL is part of the W3C’s Semantic Web technology stack, which includes RDF, RDFS, SPARQL, etc.
LinkML – Bring structure to your data.
An open framework that simplifies authoring, validating, and sharing data — providing an accessible platform for interdisciplinary collaboration and a reliable way to define and share data semantics.

Linked Data - Design Issues
The Semantic Web isn't just about putting data on the web. It is about making links, so that a person or machine can explore the web of data. With linked data, when you have some of it, you can find other, related, data.
Data Mesh Architecture: Interoperability, Co-Operation, and Co-Regulation
This paper examines the emergence of data mesh architectures and data intermediaries as key components in emerging data economies. It explores how data mesh arc
A Robust Decentralized Infrastructure for Trust-Aware Open Knowledge Sharing
Published in The Semantic Web – ISWC 2026, Lecture Notes in Computer Science, Springer, pp. 152–170. DOI: 10.1007/978-3-032-42015-2_8
Semantic governance policies overview | Gemini Enterprise Agent Platform | Google Cloud Documentation
Learn how Semantic Governance Policies (SGP) secure AI agents and tool calls using Natural Language Constraints.
New data agents across the Agentic Data Cloud | Google Cloud Blog
Learn about new data agents and tools for business analysts, data scientists, and database admins to integrate with the Agentic Data Cloud.

Linked Open Vocabularies (LOV)
Your entry point to high quality and reusable Vocabularies to describe Linked Data.

About Atproto w/ Dan Abramov | Wireframe Live
About Atproto w/ Dan Abramov | Wireframe Live
Semantic Web
The Semantic Web, sometimes known as Web 3.0, is an extension of the World Wide Web through standards set by the World Wide Web Consortium (W3C). The goal of the Semantic Web is to make Internet data machine-readable.

Introducing the Open Cloud Principles (OCP) - Sam Johnston
In light of the rapidly increasing (and at times questionable) use of the term "Open Cloud" I hereby propose the following (draft) set of principles, inspired

Blogging on the open social web - and more exciting features - pckt - Dev Journal
ATmosphere — referring to the growing ecosystem of applications built on the AT Protocol, a federated protocol for open social platforms. Not to be confused ...

