Which NLP technique has most significantly improved product recommendation systems by analyzing the semantic meaning behind customer reviews rather than just keyword frequency?

Natural Language Processing (NLP) has revolutionized how retailers understand and respond to consumer behavior. From sentiment analysis of product reviews to AI-powered chatbots that understand complex customer queries, language technologies are reshaping the retail landscape. This poll tests your knowledge of how linguistic AI is being deployed in modern retail environments to enhance customer experiences and drive sales.

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Word2Vec embeddings that capture contextual relationships between words in product descriptions and reviews
Basic regex pattern matching to identify positive and negative sentiment words
Simple keyword frequency counting to determine popular product features
Random forest classification without semantic analysis of text content