Which groundbreaking NLP technique revolutionized retail sentiment analysis by enabling the detection of sarcasm and implied sentiment in customer reviews?

Sentiment analysis has revolutionized how retail brands understand customer feedback. From basic positive/negative classification to nuanced emotional understanding, the technology has evolved significantly. This poll tests your knowledge of a major linguistic breakthrough in retail sentiment analysis that changed how companies interpret customer language patterns and emotional responses to products and services.

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Bidirectional Encoder Representations from Transformers (BERT)
Word2Vec embedding
Recurrent Neural Networks (RNNs)
Latent Dirichlet Allocation (LDA)