TY - JOUR T1 - Resizing Method for Applying RF-based Data to ViT in Human Activity Recognition AU - Park, Jeongjun AU - Bahk, Saewoong JO - The Journal of Korean Institute of Communications and Information Sciences PY - 2025 DA - 2025/1/1 DO - 10.7840/kics.2025.50.5.725 KW - Vision Transformer KW - RF-based data AB - This paper applies RF-based data, obtained through the commonly used Radio Frequency (RF) approach in human activity recognition (HAR), to the Vision Transformer (ViT), a state-of-the-art machine learning method for image classification. Through this process, we analyze the challenges arising from applying RF-based data, which have different sizes compared to standard image dimensions, to ViT. To address these challenges, we propose various input resizing methods. Furthermore, through a comparison of these resizing methods, we identify the most effective resizing approach for RF-based data, achieving an average accuracy improvement of 9.57%.