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Steve Hedden

@stevehedden.bsky.social
51 followers 141 following 22 posts

Building knowledge graphs & semantic infrastructure for AI. LinkedIn: www.linkedin.com/in/steve-hedden Blog: towardsdatascience.com/author/steve… GitHub: github.com/SteveHedden

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Reposted by Steve Hedden
Open Knowledge Graphs @openknowledgegraphs.com · 18/09/2026
Knowledge graphs, ontologies, tools, and jobs—find them at Open Knowledge Graphs. We’re building an open directory to help you discover what’s out there and who’s building it. Explore: openknowledgegraphs.com What should we add next?
openknowledgegraphs.com
Open Knowledge Graphs
Browse ontologies, controlled vocabularies, taxonomies, and semantic software from a daily-refreshed RDF catalog.
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Steve Hedden @stevehedden.bsky.social · 17/09/2026
Launching Universal Evidence: an evidence search engine for global development. Find what’s been studied for a given condition, intervention, and place across four research registries. Free and open source. #GlobalDevelopment #EvidenceBasedPolicy stevehedden.medium.com/introducing-...
stevehedden.medium.com
Introducing Universal Evidence: A Search Engine for Research in Global Development
If you design, fund, or deliver development programs, you have to decide who to help, how to intervene, and where to invest limited…
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Steve Hedden @stevehedden.bsky.social · 06/07/2026
🧠 Knwler — Python tool that extracts structured knowledge graphs from unstructured documents using LLMs. openknowledgegraphs.com/software/knw...
openknowledgegraphs.com
Knwler - Open Knowledge Graphs
Open-source Python tool that extracts structured knowledge graphs from unstructured documents using LLMs
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Steve Hedden @stevehedden.bsky.social · 06/07/2026
🗣️ Web-Algebra — Python framework and MCP tools that translate natural language into RDF/SPARQL Linked Data operations. openknowledgegraphs.com/software/web...
openknowledgegraphs.com
Web-Algebra - Open Knowledge Graphs
Python framework and MCP tools that translate natural language into a JSON DSL for RDF/SPARQL Linked Data operations
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Steve Hedden @stevehedden.bsky.social · 06/07/2026
💎 ndoli — A personal knowledge graph tool for AI coding assistants that tracks a user's professional network, projects, and opportunities using RDF, OWL, and SHACL. openknowledgegraphs.com/software/ndo...
openknowledgegraphs.com
ndoli - Open Knowledge Graphs
personal knowledge graph tool for AI coding assistants that tracks a user's professional network, projects, and opportunities using RDF, OWL, and SHACL
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Steve Hedden @stevehedden.bsky.social · 06/07/2026
🦉 Ontofelia — Self-hosted AI agent gateway giving LLM agents RDF/OWL-based semantic memory, queryable via SPARQL with OWL-DL reasoning. openknowledgegraphs.com/software/ont...
openknowledgegraphs.com
Ontofelia - Open Knowledge Graphs
Open-source self-hosted AI agent gateway giving LLM agents RDF/OWL-based semantic memory, queryable via SPARQL with OWL-DL reasoning
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Steve Hedden @stevehedden.bsky.social · 06/07/2026
🤖 Trustgraph — grounds AI agents with explainable context via ontology-driven knowledge graphs (OWL, SHACL, RDF) combined with GraphRAG retrieval. @trustgraph.bsky.social openknowledgegraphs.com/software/tru...
openknowledgegraphs.com
TrustGraph - Open Knowledge Graphs
Open-source platform for grounding AI agents with explainable context via ontology-driven knowledge graphs (OWL, SHACL, RDF 1.2) combined with GraphRAG retrieval
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Steve Hedden @stevehedden.bsky.social · 06/07/2026
The software catalog in Open Knowledge Graphs (OKG) just grew from 169 to 212 tools — and one interesting trend in the new arrivals: tooling that connects AI agents to knowledge graphs. openknowledgegraphs.com Here are some examples:
openknowledgegraphs.com
Open Knowledge Graphs
Browse ontologies, controlled vocabularies, taxonomies, and semantic software from a daily-refreshed RDF catalog.
130
Steve Hedden @stevehedden.bsky.social · 30/06/2026
🔗 Cointegrity Web3 Glossary — 2,000+ terms covering blockchain integration and digital asset regulation. openknowledgegraphs.com/resource/coi...
openknowledgegraphs.com
Cointegrity Web3 Glossary - Open Knowledge Graphs
Reference glossary of more than 2,000 terms covering blockchain, cryptocurrency, Web3, AI-blockchain integration, digital asset regulation, and crypto financial crime, maintained by Cointegrity
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Steve Hedden @stevehedden.bsky.social · 30/06/2026
🏛️ FISH Evidence & Monument Types Thesauri — UK heritage vocabularies covering physical remains, buried monuments, buildings, and structures. Solid controlled vocabularies for the archaeology/cultural heritage crowd. openknowledgegraphs.com/resource/fis... and openknowledgegraphs.com/resource/fis...
openknowledgegraphs.com
FISH Evidence Thesaurus - Open Knowledge Graphs
terminology covering the existing physical remains of a monument, or the means by which a monument has been identified where no physical remains exist (e.g. placename evidence, soilmark, surface depos...
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Steve Hedden @stevehedden.bsky.social · 30/06/2026
🍽️ LanguaL — multilingual food description thesaurus used to describe and retrieve information about food. A classic that wasn't in the catalog until now. openknowledgegraphs.com/resource/lan...
openknowledgegraphs.com
LanguaL - Open Knowledge Graphs
multilingual food description thesaurus
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Steve Hedden @stevehedden.bsky.social · 30/06/2026
♻️ dpp: namespace — an open JSON-LD vocabulary for the EU Digital Product Passport. openknowledgegraphs.com/resource/dpp...
openknowledgegraphs.com
dpp: namespace - Open Knowledge Graphs
open JSON-LD vocabulary for the EU Digital Product Passport
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Steve Hedden @stevehedden.bsky.social · 30/06/2026
📢 IAB Content Taxonomy — the industry-standard classification for digital content used across adtech for contextual targeting and brand safety. Now in the catalog. openknowledgegraphs.com/resource/iab...
openknowledgegraphs.com
IAB Content Taxonomy - Open Knowledge Graphs
classification system providing a common language for describing digital content by topic, used for contextual advertising targeting and brand safety
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Steve Hedden @stevehedden.bsky.social · 30/06/2026
⚖️ Akoma Ntoso for EU (AKN4EU) — the structured XML/vocabulary format for EU legislative documents, maintained by the Publications Office of the EU. Foundational for anyone working on legal linked data in Europe. openknowledgegraphs.com/resource/ako...
openknowledgegraphs.com
Akoma Ntoso for European Union - Open Knowledge Graphs
common structured format for EU legislative documents
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Steve Hedden @stevehedden.bsky.social · 30/06/2026
🔒 NORIA-O + DSecO — a pair of ontologies from Orange. NORIA-O models IT network operations and events; DSecO models DNS data for reasoning over it. Useful combination for network security semantics. openknowledgegraphs.com/resource/dse... and openknowledgegraphs.com/resource/nor...
openknowledgegraphs.com
DSecO - Open Knowledge Graphs
DSecO is a data model for representing and reasoning on Domain Name System (DNS) data.
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Steve Hedden @stevehedden.bsky.social · 30/06/2026
♟️ Universal Open Game Theory Ontology — modular OWL+SHACL for game-theoretic semantics. Brand new, worth watching. openknowledgegraphs.com/resource/uni...
openknowledgegraphs.com
Universal Open Game Theory Ontology - Open Knowledge Graphs
modular OWL and SHACL ontology for game-theoretic semantics
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Steve Hedden @stevehedden.bsky.social · 30/06/2026
🖼️ Lightweight Image Ontology (LIO) — small OWL ontology relating image descriptions to visual parts. Useful for image annotation/CV provenance. By Margaret Warren & Pat Hayes openknowledgegraphs.com/resource/lig...
openknowledgegraphs.com
Lightweight Image Ontology (LIO) - Open Knowledge Graphs
a small ontology for relating image descriptions to the image or visual parts in an image
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Steve Hedden @stevehedden.bsky.social · 30/06/2026
Open Knowledge Graphs (OKG) just crossed 2,000 entries 🎉 The catalog now covers 2,011 ontologies, vocabularies, and graphs. Here are some cool recent additions 🧵 openknowledgegraphs.com
openknowledgegraphs.com
Open Knowledge Graphs
Browse ontologies, controlled vocabularies, taxonomies, and semantic software from a daily-refreshed RDF catalog.
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Steve Hedden @stevehedden.bsky.social · 03/03/2026
Predicting the #Oscars with AI is easy. Building the data foundation that lets anyone (human or agent) explore the data, generate models, and test hypotheses is harder. I built a layered knowledge graph to do exactly that. Blog 👇 medium.com/@stevehedden... Repo 👇 github.com/SteveHedden/...
github.com
GitHub - SteveHedden/fckg: Film Club Knowledge Graph
Film Club Knowledge Graph. Contribute to SteveHedden/fckg development by creating an account on GitHub.
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Steve Hedden @stevehedden.bsky.social · 25/02/2026
Supporting Actress is one of the most structurally interesting @sagaftra.org races this year. Golden Globe → Teyana Taylor BAFTA → Wunmi Mosaku In past split years, SAG doesn’t reliably mirror BAFTA. My model gives Taylor a 37% chance — no clear favorite. Ceremony Mar 1.
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Steve Hedden @stevehedden.bsky.social · 24/02/2026
My model gives Timothée Chalamet a 38% chance to win @sagaftra.org. Kalshi has him at 63%. @bafta.org is usually strongest signal but this year's winner isn't in the SAG race. What's left? The Golden Globe, which went to Timmy. Ceremony Mar 1. github.com/SteveHedden/...
github.com
GitHub - SteveHedden/fckg: Film Club Knowledge Graph
Film Club Knowledge Graph. Contribute to SteveHedden/fckg development by creating an account on GitHub.
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Steve Hedden @stevehedden.bsky.social · 23/02/2026
Giving Jessie Buckley a 76 percent chance of winning the SAG for best actress next week. Driven by her Golden Globe win, and Hamnet's IMDb rating. Hurt by lower profitability, weaker critical reception than OBAA, and fewer festival awards. @sagaftra.org
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Steve Hedden @stevehedden.bsky.social · 22/02/2026
Went 5/10 on my @bafta.org model predictions. Not bad — but tuning needed before #Oscars Correct: 🎬 OBAA (Film) 🎥 PTA (Director) 👩 Jessie Buckley (Actress) ✍️ Adapted Screenplay (OBAA) 📷 Cinematography (OBAA) Repo + model outputs 👇 github.com/SteveHedden/...
github.com
GitHub - SteveHedden/fckg: Film Club Knowledge Graph
Film Club Knowledge Graph. Contribute to SteveHedden/fckg development by creating an account on GitHub.
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Reposted by Steve Hedden
Towards Data Science @towardsdatascience.com · 02/01/2025
Learn how you can leverage knowledge graphs and AI to retrieve, filter, and summarize large amounts of text data — Steve Hedden unpacks the process in a detailed tutorial, focused on the example of medical journal articles.
towardsdatascience.com
How to Build a Graph RAG App
Using knowledge graphs and AI to retrieve, filter, and summarize medical journal articles
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