Kevin Yen

About me

Ad SSP Exchange Optimization - Worked on optimizing the in-take and out-going traffic of Yahoo’s high-QPS ad excahnge. These work massively reduced the cost and increased the revenue of the product. Work includes problem design, model design, impact estimation, implementation, deployment, and more. Tech stack includes Data Science, AWS EMR, and AWS SageMaker.
Ads Integrity - Worked on improving the process of company policy enforcement on the ad creatives. Massively increased the system’s precision from 33% to 97% which leads to higher efficiency of human agents. Work includes problem design, … (similarly end-to-end as above). Tech stack includes NLP, Vision, Data Science, AWS ECS, Chrome Extension, and more.
Interactive Ads Optimization - NLP, K8s
- Decrease model latency 3x – to sub 1 sec
UGC Integrity - NLP, Vision, K8s
- Reduced error rate by 10%
Enterprise Network Security - Data Science, Hive, Spark
- Netflow Enrichment and Exfiltration Detection at scale
User Login Security - Data Science, General ML
Notebook Automation - Hadoop, JupyterHub

2017 - present, Yahoo!, New York City, USA
- The projects listed above are all done within this period
2012, Lisco Global Solutions LID., Taipei, Taiwan
- Summer internship, feature implementation and Microsoft Office integration

2015 - 2017, Master’s Degree, Computer Science. The Ohio State University, USA
- Data Visualization and Visualization Systems
2010 - 2014, Bachelor of Science, Computer Science. National Central University, Taiwan
- Human-Computer Interaction