> ## Documentation Index
> Fetch the complete documentation index at: https://docs-classic.cognigy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# NLU Overview

*Cognigy Natural Language Understanding (Cognigy NLU)* is the core engine of Cognigy that allows AI Agents to interpret human language. Cognigy NLU processes text and speech to determine meaning, identify user queries, and understand context, enabling more humanlike conversations.

> [card] [Intents](https://docs-classic.cognigy.com/ai/platform-features/nlu/intents/overview)
>
> Learn the fundamentals of Intents and how they're used in Cognigy to enhance conversational AI capabilities

> [card] [NLU Performance Tuning](https://docs-classic.cognigy.com/ai/platform-features/nlu/intents/intent-analyzer.md)
>
> Fine-tune Intent recognition by analyzing accuracy and confidence. Adjust thresholds to optimize detection sensitivity

> [card] [Rules and Conditions](https://docs-classic.cognigy.com/ai/platform-features/nlu/intents/rules.md)
>
> Define rules and conditions to refine Intent handling, ensuring accurate user input recognition and response

> [card] [Slots](https://docs-classic.cognigy.com/ai/platform-features/nlu/slots/overview)
>
> Use Slots to extract data from user input, enabling dynamic interactions within conversations

> [card] [Affirmative Words](https://docs-classic.cognigy.com/ai/platform-features/nlu/intents/confirmation-words.md)
>
> Configure words and phrases for affirmative recognition, improving AI Agents understanding capabilities

> [card] [Intent Hierarchy](https://docs-classic.cognigy.com/ai/platform-features/nlu/intents/intent-hierarchy/overview)
>
> Structure and prioritize Intents to improve recognition and mapping accuracy

> [card] [Attachments](https://docs-classic.cognigy.com/ai/platform-features/nlu/attachments.md)
>
> Attach additional resources like Flows and Lexicons to enhance Intent processing and response generation

> [card] [External NLU](https://docs-classic.cognigy.com/ai/platform-features/nlu/external/overview)
>
> Integrate third-party NLU services for extended Intent recognition and language processing capabilities

> [card] [Miscellaneous](https://docs-classic.cognigy.com/ai/platform-features/nlu/text-cleaner.md)
>
> Explore additional NLU tools


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