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Hiroshi U. currently serves as a Senior Product Scientist at Indeed.com since September 2022 and has been involved as a Guest Speaker at Machine Learning Tokyo since March 2019, delivering presentations on topics such as Probabilistic PCA, Bayesian inference, and the comparison of statistical estimation methods. Additionally, Hiroshi U. has been a Data Science Blogger at Tech Notes since November 2017, authoring over 50 articles primarily focused on Bayesian inference, mathematics, and machine learning. Previously, from February 2014 to August 2022, Hiroshi U. worked as a Data Scientist at IBM, where responsibilities included optimizing inventory systems for drug store operations management through demand forecasting. Hiroshi U. holds a Master's degree and a Bachelor's degree in Mathematics from Yamaguchi University, completing the latter in 2009 and the former in 2011.