Dataset for: Comparative Analysis of U.S. Quarterly GDP Forecasting Using ARIMA, ANN, LSTM, and Hybrid Models

This dataset contains the IMF time series data used in the study. The original data were downloaded from the International Monetary Fund (IMF) database on 20 February 2026. The processed dataset includes column selection and unit rescaling (values divided by 1,000,000,000). Both the original and processed datasets are provided to ensure full reproducibility of the results.