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AI & Machine Learning · Foundational

Named Entity Recognition (NER)

An NLP task that identifies and classifies entities such as people, organizations, locations and dates in text.

Definition

NER is used to extract structured data from documents, detect PII and enrich search. It is offered by services such as Amazon Comprehend, Azure AI Language and Google Cloud Natural Language, and can also be performed by LLMs.

Example

Extracting 'Acme Corp' as an organization and 'March 3' as a date from a contract.

Exam tip

Extracting names, dates or PII from text is NER; on AWS that is Amazon Comprehend.

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