Which revolutionary NLP technique, released in 2018, fundamentally transformed retail chatbots by allowing them to understand contextual language variations instead of rigid programmed responses?

The intersection of linguistics and retail technology has transformed how brands communicate with customers. Modern retail chatbots leverage sophisticated natural language processing (NLP) to understand context, tone, and even dialect variations. These AI assistants are becoming increasingly indistinguishable from human customer service representatives, incorporating sentiment analysis and adaptive learning. How well do you know the evolution and capabilities of today's linguistic retail chatbots?

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BERT (Bidirectional Encoder Representations from Transformers)
Word2Vec
RNN (Recurrent Neural Networks)
GloVe (Global Vectors for Word Representation)