--- title: Build a semantic ontology to power AI assistants on AWS... description: Building a semantic ontology on AWS to help AI assistants navigate large enterprise data estates more accurately. The post explains why dumping entire data... canonical: https://daily.dev/posts/build-a-semantic-ontology-to-power-ai-assistants-on-aws-part-1-ewo3wpszo twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Build a semantic ontology to power AI assistants on AWS – Part 1 | daily.dev og:description: Building a semantic ontology on AWS to help AI assistants navigate large enterprise data estates more accurately. The post explains why dumping entire data... og:url: https://daily.dev/posts/build-a-semantic-ontology-to-power-ai-assistants-on-aws-part-1-ewo3wpszo og:image: https://api.daily.dev/og/posts/eWO3WPSzo.png og:image:alt: Build a semantic ontology to power AI assistants on AWS – Part 1 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Build a semantic ontology to power AI assistants on AWS – Part 1 **[AWS Database Blog](https://daily.dev/sources/aws-database-blog)** · 11 min read · 0 upvotes · 0 comments ## Summary Building a semantic ontology on AWS to help AI assistants navigate large enterprise data estates more accurately. The post explains why dumping entire data catalogs into LLM context windows degrades performance, then walks through a bottom-up four-step pipeline: (1) loading catalog metadata into a property graph store (Amazon Neptune) with hierarchical relationships, (2) profiling columns to discover hidden semantic relationships using LLMs, (3) generating deduplicated business terms via vector similarity to unify technical column names under consistent vocabulary, and (4) indexing entities with hybrid BM25 + k-NN vector search for semantic retrieval. A facts layer stores learned assertions with confidence scores. Part 2 will cover the self-learning loop that extracts and verifies facts from user interactions. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [What If We Don't Need the Semantic Layer?](https://daily.dev/posts/what-if-we-don-t-need-the-semantic-layer--oc091fmdh) · MotherDuck · 5 upvotes · 0 comments - [Building a Context Layer for AI Agents](https://daily.dev/posts/building-a-context-layer-for-ai-agents-z4l85u5v6) · Snowflake · 1 upvotes · 0 comments - [How data catalog will become a tool for analytical AI agents ?](https://daily.dev/posts/how-data-catalog-will-become-a-tool-for-analytical-ai-agents--5kpkirpqv) · Medium · 0 upvotes · 0 comments --- Tags: [#aws](https://daily.dev/tags/aws), [#vector-search](https://daily.dev/tags/vector-search), [#amazon-bedrock](https://daily.dev/tags/amazon-bedrock) [View this post on daily.dev](https://daily.dev/posts/build-a-semantic-ontology-to-power-ai-assistants-on-aws-part-1-ewo3wpszo) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Build a semantic ontology to power AI assistants on AWS – Part 1","url":"https://daily.dev/posts/build-a-semantic-ontology-to-power-ai-assistants-on-aws-part-1-ewo3wpszo","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/build-a-semantic-ontology-to-power-ai-assistants-on-aws-part-1-ewo3wpszo"},"datePublished":"2026-07-14T18:39:11.958Z","dateModified":"2026-07-14T18:43:21.418Z","description":"Building a semantic ontology on AWS to help AI assistants navigate large enterprise data estates more accurately. 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