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Knowledge graph & RDF concepts

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RDF (resource description framework)

A W3C RDF standard framework for representing information about resources on the web using Subject-Predicate-Object triples.

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SPARQL

A declarative query language and protocol for RDF graph databases defined by the W3C SPARQL 1.1 specification. SPARQL allows agents to perform deterministic graph traversals and pattern matching.

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Triple / quad

The foundational unit of RDF data:
  • Triple: Subject, Predicate, Object (e.g. ex:Agent ex:uses ex:Worlds).
  • Quad: A triple bound to a named graph context (Subject, Predicate, Object, Graph/World ID).

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SHACL (shapes constraint language)

A W3C SHACL standard language for validating RDF graphs against specified shapes and constraints.

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world

A stateful dataset that acts as an agent’s verifiable, AI-native context. A world records changes chronologically and stays synchronized with retrieval indexes. Worlds’ default data model is an RDF knowledge graph with a hybrid search index combining FTS5/BM25 keyword matching, vector embeddings, and RDF structural filters, fused via reciprocal rank fusion (RRF). The world contract is data-model agnostic: a world can also be backed by a relational database or another syncable store.

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Neuro-symbolic AI & memory

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Context engine

A specialized system that combines structured knowledge graph querying with vector similarity search to provide precise, verifiable context to AI models.

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Reciprocal rank fusion (RRF)

An algorithmic technique used by Worlds to fuse search rankings from multiple retrieval signals (pattern queries, full-text search, and vector embeddings) into a single, optimized rank list.

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Provenance

The immutable, auditable lineage of facts stored in Worlds, tracking the exact source, timestamp, and context of every quad assertion.

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Wazoo ecosystem

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Worlds

The authoritative context engine and RDF fact ledger platform (wazootech/worlds) built by Wazoo Technologies.

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MemSDK

A backend-agnostic TypeScript SDK interface (wazootech/memsdk) that standardizes memory operations (add, search, profile, forget) across multiple memory backends.

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Wazoo skills

The official skills package (wazootech/wazoo-skills) that equips AI coding agents with decision mapping and memory context tools.