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Liaosa Xu is a seasoned data science and statistics professional with extensive experience in various roles across notable companies. Currently serving as a Senior Data Scientist at Tencent since October 2021, Liaosa focuses on recommendation algorithms, universal user embedding, and federated learning with privacy protection. As a Senior Statistics Consultant at AdExperiments, Liaosa develops predictive models and evaluates statistical methods for various applications. Previously, Liaosa held positions at Ant Financial and Amazon, leading analytics initiatives and implementing fraud detection models, respectively. Liaosa has a strong educational background with a PhD in Statistics from Virginia Tech and a Master's in Industrial Systems Engineering. Additionally, Liaosa has contributed to statistical analysis in diverse industries through roles at Essence, Forest Laboratories, and as a statistical consultant.