| 2021 | HCI | A Hierarchical Classification Scheme for Efficient Speech Emotion Recognition. | Panikos Heracleous, Kohichi Takai, Keiji Yasuda, Akio Yoneyama |
| 2020 | HCI | An Empirical Study on Feature Extraction in DNN-Based Speech Emotion Recognition. | Panikos Heracleous, Kohichi Takai, Yanan Wang, Keiji Yasuda, Akio Yoneyama, Yasser Mohammad |
| 2020 | HCI | Automatic Spoken Language Identification Using Emotional Speech. | Panikos Heracleous, Akio Yoneyama, Kohichi Takai, Keiji Yasuda |
| 2020 | HCI | Deep Learning-Based Automatic Pronunciation Assessment for Second Language Learners. | Kohichi Takai, Panikos Heracleous, Keiji Yasuda, Akio Yoneyama |
| 2018 | CICLING | I-vectors and Deep Convolutional Neural Networks for Language Identification in Clean and Reverberant Environments. | Panikos Heracleous, Yasser Mohammad, Kohichi Takai, Keiji Yasuda, Akio Yoneyama |
| 2018 | CICLING | Automatic Method to Build a Dictionary for Class-Based Translation Systems. | Kohichi Takai, Gen Hattori, Keiji Yasuda, Panikos Heracleous, Akio Ishikawa, Kazunori Matsumoto, Fumiaki Sugaya |
| 2018 | IWCMC | Spoken Language Identification Based on I-vectors and Conditional Random Fields. | Panikos Heracleous, Yasser Mohammad, Kohichi Takai, Keiji Yasuda, Akio Yoneyama |