What 300,000 Unowned Datasets Taught Us About Semantics
Feb 5 · 5 min read · At Uber, we had over 300,000 datasets, and most of them were unowned. Engineers couldn't find the data they needed, and when they did, they had no way to know if they could trust it. Who owned this table? Where did the data come from? What did the nu...
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May the Nodes Be with You
May 4, 2025 · 7 min read · Knowledge graphs are powerful tools to visualize and explore your data, and can help uncover new insights and patterns in how your data is related. They are easy to search and navigate, but getting your data into the graph database in the right forma...
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Building a Knowledge Graph Locally with Neo4j & Ollama
Apr 21, 2025 · 16 min read · Knowledge graphs, also known as semantic networks, are a specialized application of graph databases used to store information about entities (person, location, organization, etc) and their relationships. They allow you to explore your data with an in...
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From Information to Knowledge: Ontology in Knowledge Graphs
Oct 17, 2024 · 6 min read · In the first part of this series, we explored how knowledge graphs are fundamentally different from traditional databases by shifting focus from isolated pieces of information to connected relationships. We also discussed various storage mechanisms f...
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Derive an OWL Ontology from JSON Schema
Apr 1, 2023 · 2 min read · There was some content I needed to inject into an RDF graph where the original data was in JSON files. I first noted the surprisingly well-defined form of the JSON data. Attached was a "schema.json" file which contained stuff similar to an ontology a...
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