Hao Zhang is a data scientist with 10 years of experience blending academic rigor from a Ph.D. at The University of Tokyo with product-focused ML work at Apple, Mercari, Rakuten and other tech companies. He specializes in signal processing, wearable sensing, and scalable machine learning systems for recommendation, search, classification, clustering and ranking, with applied work in emotion recognition, dietary habit monitoring and human activity recognition. Comfortable taking models from research to production, he has tackled large-scale sentence/product classification and personalization problems in consumer-facing products. Based in Chiyoda, Japan, he brings a rare combination of wearable-sensor expertise and big-data engineering practice that drives both lifestyle-improving research and commercial impact.
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