Amazon Comprehend
Developer Guide

Detecting Key Phrases

You can use Amazon Comprehend operations to detect entities and key phrases in your document.

The DetectKeyPhrases and BatchDetectKeyPhrases operations detect the key phrases in a document. A key phrase is a string containing a noun phrase that describes a particular thing. It generally consists of a noun and the modifiers that distinguish it. For example, "day" is a noun; "a beautiful day" is a noun phrase that includes an article ("a") and an adjective ("beautiful"). Each key phrase includes a score that indicates the level of confidence that Amazon Comprehend has that the string is a noun phrase. You can use the score to determine if the detection has high enough confidence for your application.