Glossary explainer · 2 min read
The record connecting an output back to the page, moment, and sentence it came from.
Source provenance is the retained record of where a piece of information came from and when it was obtained. In an AI system it usually means three things travelling together: a canonical URL, a retrieval timestamp, and the excerpt supporting the claim. It tells you the origin of a statement; it does not tell you the statement is true.
provenancecitationsglossary
Glossary explainer · 2 min read
Deciding whether a page changed in a way that matters, rather than whether its bytes changed.
Semantic change detection compares the meaning of a page between two points in time instead of its raw markup. A byte diff fires on a rotated testimonial or a new build hash; a semantic comparison asks whether a tracked fact — a price, a limit, a supported region, a policy clause — is different now. It is the difference between a monitoring system people read and one they mute.
monitoringchange detectionglossary
Glossary explainer · 2 min read
Turning a page into typed records against a schema you defined first.
Structured extraction is the process of converting unstructured page content into records that match a schema: named fields, declared types, explicit optionality. The output is something software can validate, store, compare, and sort — as opposed to a summary, which only a person can evaluate. The schema comes first; that ordering is what separates extraction from interpretation.