“…Root cause analysis (RCA), a task to to identify the underlying factors or events that trigger a network failure and determine the appropriate remedial actions, has been considered as a critical process in troubleshooting communication network failures [1] Conventional RCA methods typically rely on manual analysis or rule-based algorithms, which are expensive, errorprone, and often struggle to capture the complexity and dynamic nature of modern communication networks. Therefore, researchers have proposed various automated methods to assist in RCA, including statistical methods [2], [3], machine learning [4]- [7], and deep learning [8], [9]. Among them, deep learning has been proven to be a powerful tool in a variety of applications, including image classification [10], natural language processing [11], and speech recognition [12].…”