This session was recorded in NYC on October 22nd, 2019 and can be viewed here: https://youtu.be/_RxH-bNRqp0 A Decade of Data Science. The Nationwide Journey The Nationwide Enterprise Analytics Office (formerly Customer Insights and Analytics) has more than 10 years of experience in end-to-end data product development and system integration. The culture to attract, train and develop talent, the technical advancement to apply the new methods, the model factory to productionalize models, and responsive processes to measure business impact have all contributed to positive business outcomes as well as this team’s fast growth. In this talk, we will introduce Nationwide’s data science capabilities through case studies of a few data products they have built and deployed. Bio: Weiyan Zhao is the Director of Data Science at Nationwide Insurance’s Enterprise Analytics Office. She currently leads a team of data scientists to provide enterprise solutions that drive business value and influence decisions through application of advanced statistical modeling and machine learning techniques. Previously, Weiyan served as an Analytics Manager at Chase, and as a Research Associate at Nationwide Children’s Hospital and at University of Texas at San Antonio. She received her PhD in Epidemiology and Statistics, and has been passionate about data and analytics throughout her career. Additionally, she is also a long term volunteer for different non-profit organizations to promote culture and diversity, and mentors young professionals.

1. A DECADE OF DATA SCIENCE
Weiyan Zhao
Director of Data Science
Nationwide Insurance

2. Proprietary & Confidential. Unauthorized use or publication of any part of this document outside of Nationwide is strictly prohibited.
© 2019 Nationwide Mutual Insurance Company
What a good data science team do
What are our key modeling capabilities
• Statistical Modeling and Forecasting
• AL & Machine learning techniques
• Experimental Design
How we deliver insights
• Applied math
• Various models as business solutions
• masterful storytelling
$18
$28
$24
2017 2018 As of June 2019
To generate benefits for the company!

3. Proprietary & Confidential. Unauthorized use or publication of any part of this document outside of Nationwide is strictly prohibited.
© 2019 Nationwide Mutual Insurance Company
• Statistics
• Mathematics
• Computer Science
• Political Science
• Healthcare
• Engineering
Talent
• CRISP - DM
• Peer reviews
• Style guides
• Standards
• Reproducible
research
Process
• R/RStudio
• Python/Jupyter
• H2O
• Tensor Flow
• VMs with GPUs
• Shiny
Tools
• Intellectually curious
• Creative
• Innovative
• Collaborative
• Passionate
• Rigorous
Culture
Diverse background and tools are essential

4. Proprietary & Confidential. Unauthorized use or publication of any part of this document outside of Nationwide is strictly prohibited.
© 2019 Nationwide Mutual Insurance Company
Business
Understanding
Data
Collection and
Understanding
Model
Development
Model
Validation
Model
Deployment
Performance
Monitoring
ML algorithms
AI applications
Statistical models
R, Python, H2O, etc
Common Design Patterns
• Batch based
• Event based
• Model-as-a-service/Real-time
* Illustration of Cross-industry Standard
Process for Data Mining (CRISP-DM )
Model life cycle

5. Proprietary & Confidential. Unauthorized use or publication of any part of this document outside of Nationwide is strictly prohibited.
© 2019 Nationwide Mutual Insurance Company
GENERATED
SCORES
25 BILLION
OVER
MONTHLY RELEASES
100
Since 2010, our proprietary and patented model
production environment has been busy…
EXECUTED
MODEL RUNS
OVER A HALF
MILLION
Increase
Profitability
Mitigate
Risks
Know
Customers

6. Proprietary & Confidential. Unauthorized use or publication of any part of this document outside of Nationwide is strictly prohibited.
© 2019 Nationwide Mutual Insurance Company
Thank You
Email (zhaow3@nationwide.com)