Definition

Entity

An entity is a uniquely identifiable person, organisation, product or concept in a knowledge representation, as opposed to a keyword string.

AI answers reason over entities, so brand disambiguation matters: if two companies share a name, the engine may attribute your competitor's attributes to you.

Encyclopedic and structured references are the cheapest way to establish an entity clearly, which is why Wikipedia and Baidu Baike presence correlate so strongly with mention rates.

Nostimates measures entity across twelve AI answer surfaces. Request access →

All terms

AEO (Answer Engine Optimisation)GEO (Generative Engine Optimisation)AI Overviews AI Mode Citation share n-sampling Query fan-out Grounding Share of voice (AI)Extraction success rate Surface Answer engine Citation Brand mention Mention rate Confidence interval Statistical significance Citation volatility Non-determinism Reproducibility Identity-free collection Personalisation Locale Residential proxy Bot detection Collection cost Credit Evidence retention Audit trail Parser version Canary prompt Data freshness Cadence Prompt set Head term Long-tail query Competitive set llms.txt robots.txt AI crawler Training crawler Retrieval-augmented generation (RAG)Hallucination Answer box Featured snippet Zero-click search Entity salience Knowledge graph Structured data JSON-LD schema.org FAQ schema Answer-first content Chunk Embedding Semantic search Prompt injection Market coverage Sentiment analysis Position tracking White-label data