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Core concept · Entity & Knowledge Graph

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Definition

An authority signal is any piece of evidence that indicates a source, entity, or piece of content is credible and trustworthy within its domain — including inbound links from authoritative sites, citations in reputable publications, structured data verification, expert authorship, and consistent accurate information across the web. AI systems do not evaluate authority the way humans do — they infer it from patterns in data. A source that is frequently cited by other authoritative sources, that has structured entity data confirming its identity, and that has a consistent record of accurate information accumulates authority signals that AI systems use to weight their citation decisions. Building authority is the same long-term discipline it has always been in SEO — the signals have just become more varied and more important.

Site authority

E-E-A-T

Source credibility

Trust signal

Co-citation

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