Zhang Yimeng Email & Phone Number

中国 上海市区

• 2018.1 - present
• Developed anti-fraud rules with rule-extraction from CART/ Regularized Random Forest. Achieved a decrease of 20% in transaction disturb rate while keeping same level of recall rate of fraudulent transaction
• Feature extraction and derivation from trading behavior, LBS, devices and other data sources to support customer marketing and application scorecard development (XGboost) for personal loan product
• Understood offline collection business scenario, analyzed user behavior and built customer segmentation model with K-means++ to help differentiated marketing
• Summarized the analytical needs from various departments, conducted data cleansing/manipulation/feature extraction and designed customer label system2017.1-2017.12
• P2P merchants risk modeling using Random Forest + SMOTE + Leave-One-Out to overcome sample imbalance

Shanghai

• Explored behavior of credit report querying users, extracted features of abnormal querying patterns and set up expert rules to detect illegal querying
• Assisted with data modification/extraction tasks and improved the contents and statistical caliber of business credit reports
• Analyzed corporate credit data quality by perspective of integrity, timeliness, accuracy and relevancy, and developed data quality scoring framework

Philadelphia

• Perform data entry, cleaning, and quality validation for homeless clients’ data in Philadelphia’s Homeless Management Information System (HMIS)
• Compile statistics, timelines, tables and graphs for office’s reports and reviews
• Analyze the Transitional Housing program data to determine the characteristics of homeless families most likely to find permanent housing using SPSS
• Conduct literature reviews around policies and practices relevant to urban homelessness

Shanghai City, China

• Conducted secondary research to collect information about clients’ business and related industry background using the Internet, academic and other published data sources
• Assisted with the preparatory work for field operations by recruiting and verifying interviewees, and establishing research timeline
• Translated and examined questionnaires and screeners for quantitative and qualitative study
• Drafted interview and focus group discussion notes and summaries
• Assisted with research reports preparing and writing

Philadelphia

• Conducted community research on Chinese immigrants’ access to healthcare in Philadelphia
• Contributed to center’s outreach efforts, e.g., coordinated special events to attract Asian seniors and was reported on the school’s annual publication (http://www.sp2.upenn.edu/docs/alumni/SP2_2013_Review.pdf)
• Conducted literature reviews and fact-finding related to the demographic information on the community, customers’ needs, resources and public assistance available
• Performed customers’ need assessment using surveys and interviews
• Collected and updated customer data for Philadelphia Corporation for Aging databases

Shanghai City, China

• Assist in the teaching process for TOEFL classes of 10 students. Organize learning activities such as review session, homework explanation, one-on-one tutoring and tests design to track students' performance and reach.
• Serve as a bridge between students, teachers and parents to maximize the learning experience.

Shanghai City, China

• HFH is an international non-governmental organization dedicated to eliminating poverty housing
• Assisted with identifying HFH programs and aid-receiving applicants through secondary research and family interviews
• Supported marketing and PR efforts by editing marketing materials, family profiles, graphic design for events, and by collecting impressions from HFH press releases
• Managed volunteer teams; recruited individual/corporate volunteers, coordinated on-site building projects

Master'S Degree, Social Work

Bachelor'S Degree, Public Relations/Image Management

Activities and Societies: College Student Union, Volunteer sector