Which pioneering product first introduced large-scale sentiment analysis for retail customer reviews using transformer-based natural language processing in 2018?

Test your knowledge about revolutionary natural language processing products that transformed how we analyze customer sentiment in retail. These technologies have fundamentally changed how businesses understand customer feedback, reviews, and social media mentions, enabling more responsive and personalized customer experiences. How well do you know the history of sentiment analysis tools in the linguistic technology landscape?

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IBM Watson Tone Analyzer
BERT (Bidirectional Encoder Representations from Transformers)
Amazon Comprehend
Stanford CoreNLP Sentiment