Chonghao Bi Email & Phone Number

Greenville, South Carolina, United States

Greenville, South Carolina, United States

• Enhanced predicting accuracy from 65% to 95% by developing multiple predictive machine learning models for portfolio management and strategy optimization and utilizing credit bureau, linked account and transaction data via R and SQL in Debt Collection Revenue Prediction Model Design project. • Spearheaded the design and implementation of advanced payer probability and liquidation rate GBM models, unveiling intricate insights into revenue projections for acquired debt. Achieved an impressive accuracy in revenue predictions, empowering senior management with critical data for strategic adjustments and informed decision-making. • Improved operational efficiency by approximately 80% through the development of robust model monitoring tools; these tools, seamlessly integrated with Power BI dashboards, automate the extraction and cleansing of new data; and the implementation allows for a comprehensive analysis of exogenous and seasonality effects on portfolio management; the dynamic visualizations facilitate in-depth scrutiny across various segments, including Portfolios, Sellers, State, and Time periods. • Created model refitting tool that can automatically re-train the machine learning model with choices of adding new predictors or change parameters to provide more accurate prediction, such as eliminating the discrepancy between actual and prediction during COVID period. • Built decision tree model and extracted logic from it to help identify wage/ bank account garnishment attempt of law firm and increased identification accuracy more than 20%.

Chicago, Illinois, United States

• Capstone Project of University of Chicago & B2W Digital -- Marketplace Analytics Seller Analysis and Drivers of Inactive Sellers.• Proposed an extensive EDA on Ads, BuyBox and Sales data to extract correlations between selected features and engagement rate.• Used principal component analysis and autoencoder for dimensionality reduction to ignore insignificant data (“noise”).• Applied clustering algorithms (i.e. partition, hierarchical) to extract meaningful information from clusters to understand common features of active and inactive sellers.• Developed classification algorithms (i.e. decision tree, gradient boosting classifier) on the selected features, with the activeness status of sellers as label to build predictive models to classify sellers into active and inactive labels and drive insights for designing business strategies.

China

• Extracted and analyzed Q1 & Q2 user data of Honor of Kings (mobile game) to identify factors of customer churn problem via SQL and python, including investigated ban/pick rate and winning percentage for more than 90 game characters and proposed adjustment plan.• Developed and pitched strategic approaches based on game data report and user feedback: assisted in Honor of Kings V53 & V54 version revisions by optimizing the game characters value and game equipment value strategic plan.• Performed in-depth market research on mobile game industry, including market classification, market size calculation and prediction, market driver analysis, future trends analysis and competitive landscape.• Improved in game sales revenue by 18% through implementing the data visualization on game life circle report, assisting in price range elasticity test and provided business insight via Tableau.

Shanghai, China

• Reviewed financial statements and conducted research for revenues, costs and profit rates of 3 clients, and provide strategies on short- and long-range ROI.• Extracted and analyzed post-investment management data covering 5 industries to perform in-depth business valuation, including monitored value and volume share in market, and identified market trend to locate potential investment object via financial models.

Jinan, Shandong, China

• Assisted in the mid-year audit and pre-IPO audit of SENTURY CO. LTD and elevated the internal control environment by checking financial statements from Jan 2016 to June 2018; discovered that client could reduce 9% of cost by increasing 24% of natural rubber purchase from Thailand. • Investigated and inquired suppliers and customers of SENTURY CO. LTD; including check quantity and quality of raw material, production equipment and final product (Tires); make sure the number, time and deception are valid and as same as the records; prepared the examination of China Securities Regulatory Commission.

Qingdao, Shandong, China

• Studied and operating personal loan in the field of education funding, house and vehicle purchase with 10+ customers.• Examined and verified financial statements of individuals and corporations; assisted complete risk evaluation for 4 companies.

Master'S Degree, Analytics, Gpa 4.0/4.0

Bachelor'S Degree, Applied Mathematics