Siliang Ji (Vicky)

352-***-**** acegwu@r.postjobfree.com

Qualification

M.S in Statistics & Operation Research, with significant coursework and experience in data mining, machine learning.

5+ years of production (Data Driven) experience in analytic role (4 years of leading experience).

Expert knowledge in traditional statistics, data mining, machine learning,

Extensive experience working in cross-functional teams.

Extensive experience in user preference, purchase /customer behavior analysis, user targeting, retention analysis..etc

Hands on experience in recommender system. (product recommendation, movie/music recommendation, CF)

Proficiency in R, Python, SQL, SAS, JMP, SPSS, Excel, PowerPoint.etc

Extensive experience in manipulating and analyzing complex, high-volume, high-dimensionality data from varying sources ; hands on experience with Hadoop ecosystem and MapReduce paradigms

Hands on Experience with data visualization technologies, ggplot2 in R and Tableau;

Working knowledge in CRM, optimization Campaign analysis, marketing research, experimental design, retention analysis, a/b testing..etc

Experience

Statistician 09/2013-01/2014

Department of Behavioral Science & Community Dentistry Gainesville, FL

Handled multiple projects simultaneously. Applied advanced statistical and machine learning techniques to large-scale medical data sets in order to drive improvements in health quality. Researched new ways for modeling patients’ behavior. Manipulated & analyzed complex, high-volume, high-dimensionality data from varying sources and applied statistical methodology to provide information for scientific research.

Data Processing

Provided programming support and data analysis for a variety of monitoring and evaluation activities using large and complex administrative and survey datasets. Fuzzy text/address matching.

Supported data management activities (e.g., review of design and data queries, tracking, coding, and locking).

Conducted missing data imputation, and database development in SAS, R and SQL

Statistical analysis

Utilized data mining and statistical modeling to extract insight from health databases(containing records on the longitudinal care of almost half a million patients).

Developed and automated Predictive Modeling capabilities to assist the state health plans in providing accurate risk assessments and risk adjustments to government decision makers.

Bayesian and frequency methods, group sequential methods, survival analysis, Logistic Regression, GEE, Longitudinal analysis (including mixed models), data mining, missing data strategies, and multiple testing strategies.etc..

Result presenting and writing

Developed and refined statistical analyses, evaluated quality of data, interpreted findings, and prepared materials suitable for publication in peer-reviewed journal.

Created compelling PowerPoint presentations and presented findings, both formally and informally, to audiences at all levels of the organization weekly.

Graduate Assistant 08/2012- 05/2013

University of Florida Gainesville, FL

Taught PhD level course-Statistical Methods for Health Science Research

Assist and collaborate with investigators to conduct public health research by providing high-level technical and statistical expertise.

Manipulated & analyzed complex, high-volume, high-dimensionality data from varying sources using R, SAS and SQL, and applied statistical methodology to provide information for scientific research.

Provided support in data collection, management, analysis, interpretation, and reporting for large-scale population-based studies, health services research, and clinical trials.

Provided statistical analyses for multiple projects including multiple logistic and linear regression, longitudinal analysis, hierarchical models, GEE, Cox regression, survey analysis..etc

Statistical Consultant 09/2011 -04/2012

Department of Statistics, UNC-Chapel Hill Chapel Hill, NC

Provided statistical consulting to internal and external clients. Updated existing statistical models when assumptions change.

Sample projects: Customer Behavior, User Experience, Campaign analysis, Health Decision Making,

Designed experiments to answer targeted questions and conducted exploratory data analysis in high dimensions.

Designed A/B tests.

Wrote reports by synthesizing data and provides actionable recommendations

Made highly impact presentations to influence client actions.

Lead of Data Analyst 09/2007 -05/2010

CDMS ( Data Mining Society) Beijing, China

Leaded data mining team in a multidiscipline, nationwide and high throughput organization. Analyzed multiple data sources that include online browsing behavior, product analysis, online and offline purchasing, campaign performance and survey responses, in order to understand how real customers behave under natural conditions. Performed advanced analysis to identify useful relations, patterns and features that are predictive of user behaviors, satisfaction, preferences, intents, interests etc.

Sample area: Web analysis, Customer segmentation, Customer Retention, Cross-selling, Web Analysis, Purchase behavior analysis,

Designed A/B tests to drive user data analysis.

Utilized text classification algorithms for extracting data from unstructured text.

Implemented of advanced analytics including predictive modeling, offered optimization and machine learning algorithm.

Held a national press conference each quarter to share the insights to general public, relevant industry and government.

Invited Talks

57th International Statistics Conference, Durban, South Africa 08/2009

Session Chair: “Statistical methods in assessing development issues” as a representative of Asia Female Researcher;

Invited presentation “Assessment and Analysis of China’s Manufacturing International Competitiveness”

Cross-Straits Seminars in Statistical Sciences, Hong Kong, China 12/2008

Presentation: “The analysis of the income distribution of Chinese rural residents”

Education

M.S in Statistics & Operation Research (2010 - 2012)

University of North Carolina at Chapel hill -Chapel Hill, NC

B.S in Electric Engineering (2006 - 2010)

North China Electric Power University -China

Certification

SAS Advanced Programmer

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