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Improving bot accuracy in Amazon Lex starts with handling how customers communicate naturally. Your customers express the same request in dozens of different ways, combine multiple pieces of information in one sentence, and often speak ambiguously. The Assisted NLU (natural language understanding) feature in Amazon Lex helps you improve bot accuracy by handling these natural language variations. Traditional natural language understanding systems struggle with this variability, which can lead customers to repeat themselves or abandon conversations.

The challenge: Rule-based NLU systems require developers to manually configure every possible utterance variation, a time-consuming task that still leaves coverage gaps.…

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