{"id":24392,"date":"2026-10-06T17:25:09","date_gmt":"2026-10-06T17:25:09","guid":{"rendered":"https:\/\/www.afiniti.com\/?post_type=glossary&#038;p=24392"},"modified":"2026-10-07T09:10:20","modified_gmt":"2026-10-07T09:10:20","slug":"what-is-nlu","status":"publish","type":"glossary","link":"https:\/\/www.afiniti.com\/glossary\/what-is-nlu\/","title":{"rendered":"What Is Natural Language Understanding (NLU)?"},"content":{"rendered":"<p>Natural language understanding (NLU) is the branch of artificial intelligence (AI) that interprets what a person means, not just the words they used. When a customer says \u201cI was charged twice last month\u201d, NLU is what identifies the intent (a billing dispute), the key details (duplicate charge, last month), and the sentiment behind them.<\/p>\n<p>&nbsp;<\/p>\n<h2>How NLU Works<\/h2>\n<p>NLU models are trained on large volumes of language and perform several jobs at once. Intent recognition classifies what the person wants. Entity extraction pulls out the specifics: dates, amounts, account references, product names. Context and sentiment analysis read how the person is saying it and what has already been said in the conversation.<\/p>\n<p>In a contact center, NLU is the understanding layer inside voicebots, chatbots, and routing systems: the step between hearing the customer and deciding what to do.<\/p>\n<p>&nbsp;<\/p>\n<h2>NLU vs NLP vs NLG<\/h2>\n<p>Natural language processing (NLP) is the umbrella field covering everything computers do with human language. NLU is the part concerned with comprehension: working out meaning. Natural language generation (NLG) is the part concerned with producing language: composing the reply. A conversational system uses NLU to understand the customer and NLG to answer.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The AI capability that interprets what a person means, not just the words they used. <\/p>\n","protected":false},"featured_media":0,"menu_order":0,"template":"SEO-page-template.php","glossary_industries":[77],"class_list":["post-24392","glossary","type-glossary","status-publish","hentry"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Natural language understanding (NLU) is how AI interprets what people mean. 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