About me

I am originally from Chengdu, China and was graduated from Chendu University of Technology.

After college, I studied psychology, psychometrics, and quantitative methods, receiving my MEd. from Boston College (2007), and Ph.D. from University of Florida (2012).

I am now a data scientist and psychometrician at Pearson Psychometrics Service. Prior to that, I was the psychometrician II and team lead at Pearson Clinical Assessment, and the research fellow at Assessment and Program Evaluation Services, University of Florida.

One assessment project I led is published

My research mainly focuses on data science (i.e., Machine learning, statistical modeling, and NLP), psychometrics (i.e., MIRT, equating, norming), measurement, survey design, and testing development.

I have written numerous scientific publications on psychometrics, test equating, norming, and have presented my research at over 10 international conferences.

NCME 2011 Poster

While at UF, I became an enthusiastic programmer including R, Python, and SAS, both in the lab as a research fellow and in the classroom as a teaching assistant. I have developed a passion for programming and data science, and during my tenure at Pearson I developed and gave talks on multiple training seminars.

if you are interested in my works, you can follow My projects on GitHub.

In my free time, I love watching sport games and participating in all types of sports–football, basketball, baseball, soccer, swimming, etc.

Play soccer 2020.

Thank you so much for reading.



Data Scientist & Research Scientist

Pearson Psychometrics Service

March 2017 – Present San Antonio, Texas

Member of the Pearson psychometric team working across multiple projects including the NY Regents, The Partnership for Assessment of Readiness for College and Careers (PARCC), The Arizona English Language Learner Assessment (AZELLA), and National Board for Professional Teaching Standards (NBPTS), etc.

Responsibilities include:

  • Perform research program on psychometric modeling
  • Create and maintain SAS modules and R packages
  • Oversee development and execution of programming needs for scoring and reporting
  • Develop and maintain statistical methodologies for the psychometrics framework
  • Program and implement reproducible report system for multiple projects
  • Prepare research projects for presenation to national conferences and technical advisory committee

Psychometrician II & Team Lead

Pearson Clinical Assessment

August 2012 – March 2017 San Antonio, Texas

Lead psychometrician and team lead of the clinical assessment team working across multiple projects including the Wechsler Intelligence Scale for Children (WISC5), Test of Everyday Attention for Children (TEA-Ch2), and Pharmacy College Admission Test (PCAT)

Responsibilities include:

  • Designed and developed automated scoring and text mining algorithm and implemented to scoring module of digital assessment platform
  • Developed statistical model and scopes to examine the validity and reliability of the psychological/behavior measurement products
  • Evaluated and interpreted the statistical and psychometric analysis results for the internal stakeholders and research development
  • Authored technical documentations and statistical reports for the Pearson measurement projects
  • Motored and supervised psychometric teams including guiding psychometrician and statistical analysts in completing assignments and building up necessary statistical analysis and modeling techniques

Research Fellow & Statistical Consultant

Assessment and Program Evaluation Services, University of Florida

November 2008 – August 2012 Gainesville, Florida

Research assistant for the psychometric team working on the Collaborative Assessment & Program Evaluation Services.

Responsibilities include:

  • Worked with project director in the construction of evaluation plans and monitored evaluation process
  • Assisted in establishing, monitoring, evaluating, developing and implementing strategies for project evaluation
  • Designed and developed online survey instruments through qualtrics for NSF program evaluation
  • Compiled, cleaned, and analyzed quantitative/qualitative survey data for furthe analysis
  • Performed Portfolio Management campaign tracking and analysis
  • Developed& wrote summary reports of data analysis for multiple stakeholder audiencesand program staff
  • Created R script to score technology enhanced items

Get in touch

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