Semantic density
Ratio of meaningful information to total tokens; high-density content is preferred by RAG systems for retrieval.
Definition
Semantic density is the ratio of meaningful, factual information to the total number of tokens in a text. High semantic density means less filler and more signal per token. RAG systems prefer dense content because retrieved chunks are limited by context size; dense sections yield more useful information per chunk and improve answer quality.
Relevance to GEO
Writing with clear facts, minimal fluff, and self-contained sections increases semantic density. Combined with heading-based chunking and JSON-LD, it makes your content more likely to be retrieved and cited accurately by RAG-based agents.