[IEEE 2018 Joint 10th International Conference on Soft Computing and Intelligent Systems (SCIS) and 19th International Symposium on Advanced Intelligent Systems (ISIS) - Toyama, Japan (2018.12.5-2018.12.8)] 2018 Joint 10th International Conference on Soft Computing and Intelligent Systems (SCIS) and 19th International Symposium on Advanced Intelligent Systems (ISIS) - An Investigation of Phonological Features and Acoustic Features to Auto-Classify Japanese Onomatopoeias into Semantic Usage Category