From the left, Professor Namhoon Lee of the Graduate School of Artificial Intelligence at Pohang University of Science and Technology, Jinseok Jeong, a researcher in the integrated program at Pohang University of Science and Technology, and Minkyung Song and Hyeonji Jeong, a researcher in the master's program at Pohang University of Science and Technology. A domestic research team has developed a technology to identify where uncertainty in answers provided by artificial intelligence (AI) such as Pohang University of Science and Technology ChatGPT comes from. Is the question itself difficult to answer because it is ambiguous, or is the judgment wavered because the AI ​​does not have sufficient relevant knowledge?