✅ CMUTARA: Chiang Mai University Teaching and Research Assistant for Econometrics and Statistics

CMUTARA is a web-based application developed using R Shiny and integrated with ChatGPT. It is designed to support teaching and research in econometrics and statistics by offering model selection, estimation, AI-generated interpretation, and theoretical explanations.

🟢 No installation required. Just open your browser and start using the tool.

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🌐 How to Use CMUTARA

You can use CMUTARA directly from any modern web browser.

✅ Steps:

1. Open one of these browsers:

   • Google Chrome
   • Mozilla Firefox
   • Microsoft Edge
   • Safari

2. Go to the application: 👉 https://woraphon.shinyapps.io/CMUTARA/

3. Upload your .csv dataset.

4. Select your dependent and independent variables.

5. Explore the features:

   • 📊 Model suggestions based on data characteristics
   • 🧮 Regression estimation (OLS, Logit, Probit, Poisson, etc.)
   • 💬 AI-generated interpretation of model results
   • 📚 Theoretical and statistical explanations
   • 📁 Exportable reports in various formats

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📦 Source Code

The complete source code is available at:
🔗 https://github.com/woraphonyamaka/CMUTARA

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🛠️ For Developers: Optional Local Installation

This section is for developers who want to run CMUTARA locally for customization or offline testing.

✅ Supported Operating Systems:

• Linux ✅
• Windows ✅
• macOS ✅

🔧 Prerequisites:

• R (version ≥ 4.2.0)
• RStudio (optional)
• Internet access for OpenAI API features

📥 Installation Steps

1) Clone the repository

git clone https://github.com/woraphonyamaka/CMUTARA.git
cd CMUTARA

2) Install required R packages:

install.packages(c(
  "shiny","shinydashboard","shinyWidgets","shinyjs","bslib",
  "plotly","ggplot2","readr","readxl","dplyr","stringr","httr",
  "pastecs","e1071","tseries","aTSA","plm","urca","tsDyn",
  "vars","rugarch","dynlm","MASS","nnet","mlogit","oglmx",
  "stargazer","marginaleffects","mfx","lmtest","mctest","forecast",
  "mathjaxr","chatgpt"
))

3) Set your OpenAI API key (required for ChatGPT features)

You can get your API key by signing in to your OpenAI account here: https://platform.openai.com/account/api-keys

Sys.setenv(OPENAI_API_KEY = "YOUR_OPENAI_API_KEY")

# (Optional) Save the key for future sessions
# write("OPENAI_API_KEY=YOUR_OPENAI_API_KEY", file = file.path(Sys.getenv("HOME"), ".Renviron"), append = TRUE)

4) Run the Shiny application:

shiny::runApp("CMUTARA8 remove key.R")