Which linguistic innovation significantly improved retail chatbots' understanding of customer queries between 2018-2020?

The intersection of linguistics and retail technology has transformed how brands communicate with customers. Modern chatbots incorporate sophisticated natural language processing (NLP) to understand context, sentiment, and even dialectal variations. Test your knowledge about the evolution of language technology in retail customer service and how linguistic principles have shaped today's conversational AI platforms.

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BERT (Bidirectional Encoder Representations from Transformers) contextual language modeling
Simple keyword matching with expanded thesaurus integration
Rule-based grammar systems with sentiment analysis
Phonetic pattern recognition for accent accommodation