Research On Olympic Medal Prediction Based on Random Forest-ARIMA Combined Model

The prediction of Olympic medals is complex due to the multi-dimensional influencing factors and the non-linear feature relationships. Therefore, a combined model capable of handling both non-linear feature relationships and capturing time series trends is required. Specifically, this study predicts the medal table for the 2028 Los Angeles Olympics based on a Random Forest-ARIMA combined model. After cleaning and integrating past data using non-negative least squares in a "property division" manner, the United States, China, and Japan are predicted to rank first, second, and third respectively, with a total of 92, 61, and 33 medals, and 37, 28, and 14 gold medals respectively. The United States, China, and Brazil are expected to continue their upward trends, while the United Kingdom will maintain a stable number of medals. Australia, Italy, and Japan have experienced greater medal fluctuations in recent Olympics and are expected to continue this trend. SAM is most likely to win its first medal, with a probability of approximately 72.3%, and three countries are expected to win their first medals.