Which linguistic technology breakthrough significantly improved retail chatbots' ability to understand customer intent beyond simple keyword matching?

Retail chatbots have transformed customer service by leveraging advanced linguistic technologies. These AI assistants can understand nuanced language, recognize intent, and respond naturally to customer queries. Beyond simple keyword matching, modern retail chatbots employ sophisticated natural language processing techniques that have dramatically improved their effectiveness. Test your knowledge about the linguistic technology powering today's retail customer service revolution!

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BERT (Bidirectional Encoder Representations from Transformers)
TF-IDF (Term Frequency-Inverse Document Frequency)
LSI (Latent Semantic Indexing)
N-gram Analysis