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data scientist

San Francisco, California, United States
January 15, 2018

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Yuejia (Sissi) Ma

Professional Profile: Curious Data Wizard & Logical and Enthusiastic Stats Guru. Passionate about solving problems and integrating knowledge and skills into practical applications. Fast and proactive learner with strong storytelling skills. Seeking a full-time data scientist or business analyst position in Bay Area. Email:






MS in Statistics

UC, Irvine

Sept. 2014 - Dec. 2015

MS in Mathematics

UC, Irvine

Sept. 2012 - Sept. 2014


- Predictive Modeling

- Communication &


- Data Modeling

- Data Mining & Machine


- Conscious Listening &


- Leadership & Project







MS Office





Full Life Agent License



University of California, Irvine R Projects Sept. 2014 – Jul. 2015

• ICU Mortality Study: a study of mortality outcomes of patients after admission to ICU based on survival and medical records. Age, consciousness level and blood pressure are significant factors.

Model: Linear Regression Model, Logistic Regression Model Diagnostic: Selected the final model based on AIC; Performed Pearson residuals and diagnostic plots; Conducted ROC and AUC to evaluate the accuracy (0.87)

• Tumor Growth Study: investigated the effects of different chemotherapy treatments on the volumes of different level VEGF tumors. Tumors increase in quadratic way over time and drugs are only useful when VEGF at a low level. Model: Linear Mixed Effects Model

Diagnostic: designed random effects testing, semi-variogram and residuals plot to confirm and visualize the final model

• Gun Buy-backs & Suicide: Examined data of non-firearm and firearm suicide in Australia from 1915 to 2004. Gun buy-backs will save lives. Model: Time Series Model (ARIMA, seasonality and polynomial) Diagnostic: Checked model sensitivity, verifying different models leading to the same result

• Remain in Math: Collected demographic and academic information of UCI math transfer students from 2001 to 2011; imputed the missing values (33% of the total). GPA and No. of math classes taking are the main factors that influenced students' choices.

Model: Decision Tree Model, Conditional Mean Imputation, Bootstrap-based EMB Diagnostic: Minimized the missing data effect; Full analysis enhanced the results Work Experience

AIR & Xceligent Commercial Real Estate Company Commercial Research Associate Orange, CA Mar. 2016 – Dec. 2016

• Collected the real estate data from brokers and extracted and organized it into forms through CDX. Maintained and updated current contact records in the CRM

• Reviewed, verified and corrected input data. Refined and filtered the outcome to produce a daily report to clients, receiving positive feedback from managers PDC Capital Group Investor Relations Intern

Costa Mesa, CA Jul. 2015 – Feb. 2016

• Collaborated in a team-based model partnered with other departments

• Presented senior-living homes projects, attracting 2 potential EB-5 investors

• Managed publicity (videos, brochures, PPTs, newsletters) and financial materials Standard Chartered Bank Financial Consultant Assistant Intern Hangzhou, China Mar. 2012 – Apr. 2012

• Analyzed investment opportunities to meet specific customer needs, recommended them appropriate strategic investment plan

• Developed and cultivated own client base, proactively generated ideas to connect with clients and prospects

Contact this candidate