[ACM Press the 28th Annual ACM Symposium - Coimbra, Portugal (2013.03.18-2013.03.22)] Proceedings of the 28th Annual ACM Symposium on Applied Computing - SAC '13 - A visual analytics tool for system logs adopting variable recommendation and feature-based filteringHayashi, Aki; Itoh, Takayuki; Nakamura, Satoshi · 2013