Classification
Also: classifier
Sorting items into groups. For example, put each email in a group based on its topic.
The fuller definition
Classification assigns an input to one or more categories under a defined scheme.
The reference set has ten relevant events. Six are found, four are missed, and two additional returned items are unsupported. This example measures extraction, not every aspect of a legal work product.
A concrete example
An inventory labels a document as an email, agreement, invoice, or unknown.
The distinction that matters
Categories need clear definitions and an uncertainty path; forcing every item into a label can hide ambiguity.
Related terms
Machine learning (ML)
Building a program by training it on examples. The training shapes how it handles new input.
Agents & automationRouting
Choosing where a task goes next. For example, send a hard question to a stronger model or to a person.
Reliability & securityEvaluation (eval)
Testing an AI tool on a set of tasks to see how well it actually does.
Where it is taught
What actually happens when you ask AI a question?Source and further reading
Google · Machine Learning GlossaryThe definition and example are written for this library. The link gives background, official documentation or legal authority as labelled. Legal scope depends on the jurisdiction and current text; product features depend on release and settings.