Which natural language processing breakthrough significantly improved retail voice commerce accuracy in 2020, reducing linguistic misinterpretations by over 30%?

Voice commerce is transforming the retail landscape by leveraging natural language processing and speech recognition technologies. As customers increasingly interact with brands through voice assistants and smart speakers, businesses are adapting their strategies to accommodate this shift in shopping behavior. This poll tests your knowledge about the technological intersection of linguistics and retail in the evolving voice commerce space.

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Google's BERT (Bidirectional Encoder Representations from Transformers)
Amazon's Alexa Natural Language Understanding (NLU) Framework
Apple's Siri Neural Text-to-Speech Engine
Microsoft's Conversational AI Platform