IRT analyses and CAT simulations of the Polish adaptations of the MacArthur-Bates Communicative Development Inventories

A R package to fit IRT model (1PL, 2PL, GRM, PRM) in Generalized Linear Mixed Modeling (GLMM) framework

Examining the psychometric properties of the survey items based on the responses from the patients. IRT models (graded response model, GRMs), CFA, and EFA were used for analysis

This repository presents different IRT Bayesian models that combine continuous and binary outcomes.

Adaptive learning engine with IRT algorithm and AI-powered study plans using Gemin

Run differential item functioning analysis on items from a multistage computer adaptive test using examinee ability as matching criterion

AI-powered adaptive testing engine using FastAPI, MongoDB, and IRT-based difficulty adjustment.

Analysis of the RASI data using a Bayesian IRT

Code for exam simulation app in R Shiny.

Data used by dgo in examples and vignettes

Computerized Adaptive Test using IRT , implemented with node.js , JavaScript , Python, MLModel

An R interface for fitting Thurstonian models using Mplus.

An adaptive learning tool that will use machine learning techniques to tailor the learning experience to each individual learner.

1D Adaptive Testing Engine using Item Response Theory (IRT) | FastAPI · MongoDB Atlas · GPT-4o-mini | Dynamically adjusts GRE question difficulty based on real-time ability estimation

Repository to hold my course project for the "Item Response Theory" elective discipline taken at FMI.

Sistema de Aproximación a la Detección Temprana de Botrytis Cinerea en el Arándano Biloxi mediante Termografía

A collection of generic R templates for IRT analysis. These scripts are intended to be reusable: simply load your own dataset and adjust the variable names to apply the models to your specific use case.

IRT-based adaptive testing engine with real-time question selection

Adaptive GRE prep tool using 1PL IRT with Fisher Information item selection for real-time ability estimation. LLM generates personalized study plans with curated resources. Built with FastAPI, MongoDB Atlas, Clerk Auth, and OpenRouter. 74 tests, Docker support, structured logging.

R code for psychometric modeling of the DAACS Math diagnostic: 2PL IRT and DIF