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Reference.org
Natural language understanding
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<p>Natural language understanding (NLU) or natural language interpretation (NLI) is a subset of <a href="/facts/Natural_language_processing/1hjMKsSN">natural language processing</a> in <a href="/facts/Artificial_intelligence/lJGauQwX">artificial intelligence</a> that deals with machine <a href="/facts/Reading_comprehension/PYLC9k69">reading comprehension</a>. NLU has been considered an <a href="/facts/AI-hard/Ik4mAVRy">AI-hard</a> problem. </p><p>There is considerable commercial interest in the field because of its application to <a href="/facts/Automated_reasoning/x5EdkKoU">automated reasoning</a>, <a href="/facts/Machine_translation/DGF3NwuI">machine translation</a>, <a href="/facts/Question_answering/1gplmc6L">question answering</a>, news-gathering, <a href="/facts/Text_categorization/B69lL6BH">text categorization</a>, <a href="/facts/Voice_user_interface/jkdI6nGy">voice-activation</a>, archiving, and large-scale <a href="/facts/Content_analysis/QVhj8N0v">content analysis</a>. </p>