Feb 2016–Feb 2018Lead Data Scientist, WATCHA Inc.
Implemented recommendation engine for WATCHA! for books.
Improved profitability of WATCHAPLAY by optimizing recommendations.
Distributed and optimized data processing pipeline.
Developed recommendation algorithms for home/search/category page of WATCHAPLAY.
Coordinated a research team of 3–5 people.
Mar 2014–Feb 2016Data Scientist, WATCHA Inc.
Improved recommendation accuracy and optimized the sign-up procedures of WATCHA!.
Developed content recommendation algorithm for home feed of mobile version of WATCHA!.
Modeled relationships between user preferences on contents and other
attributes for use in targeted advertisement.
Contributed porting python-based recommendation system to Scala.
Education
Feb 2008–Feb 2014Ph. D. student of Machine Learning Group @ POSTECH.
Presented 7 peer-reviewed papers about machine learning.
Participated in 2 national, > 2 coorperate research projects.