Shared
Make knowledge understandable and reusable by others.
KNOWLEDGE / DESIGN & PRINCIPLES
Knowledge Design
Knowledge is more than stored information. Design it so people can understand and verify it, AI can use it, and both can build on it.
01 / PRINCIPLES
SEPT Principles
Four design principles for preserving meaning and evidence when creating, abstracting, generalizing, integrating, updating, sharing, and reusing knowledge.
Evolving
Keep knowledge open to new evidence and revision.
Plural
Preserve different meanings, records, and interpretations.
Traceable
Connect knowledge to sources, evidence, and decisions.
02 / CONCEPTS
Concepts & Approaches
Knowledge Versioning
An approach to knowledge change history, semantic differences, and alternative interpretations, drawing on version-control concepts from Git.
Knowledge Graph Diff
An approach to examining changes in claims, relationships, conditions, and supporting evidence—not only graph structure.
03 / EXPERIENCE & EXAMPLES
From Real Data to Knowledge
In Japanese COVID-19 open data, one prefecture might classify patients as “under 10,” while another used “not yet enrolled in school.” These categories are not equivalent. Combining data without preserving those differences can destroy meaning.
This hands-on experience helped shape the Plural and Traceable principles.
04 / READING