Projects

Contains an applied analysis of student retention using the Open University Learning Analytics Dataset (OULAD).

A technical case study using the public Telco Churn dataset (Kaggle) to demonstrate a rigorous causal inference pipeline.

A proof of concept using XGBoost to predict text complexity from keystroke logging dynamics.

Gulsah Gurkan, Yoav Benjamini, and Henry Braun. Published in Large-scale Assessment in Education, (2021).

An R package available on CRAN R repository providing a collection of psychometric methods for automated test assembly.

Henry Braun & Gulsah Gurkan. Published by: ETS Research Institute (2024).

From OLS to Multilevel Multidimensional Mixture IRT: A Model Refinement Approach to Investigating Patterns of Relationships in PISA 2012 Data.

Contains both a Python notebook and an R script for the same data cleaning and wrangling task to demonstrate the equivalent code structures.

Demonstrating how to create a heatmap using GeoJSON spatial data. Employing json files via web links is also exemplified.

R script that reads in and preps data files in an automated fashion, conditional on file type (e.g., .zip, .csv, .txt, etc.).