The Hitachi-JHU DIHARD III System: Competitive End-to-End Neural Diarization and X-Vector Clustering Systems Combined by DOVER-Lap

Shota Horiguchi; Nelson Yalta; Paola Garcia; Yuki Takashima; Yawen Xue; Desh Raj; Zili Huang; Yusuke Fujita; Shinji Watanabe; Sanjeev Khudanpur

arXiv · 2102.01363

The Hitachi-JHU DIHARD III System: Competitive End-to-End Neural Diarization and X-Vector Clustering Systems Combined by DOVER-Lap

Shota Horiguchi·Nelson Yalta·Paola Garcia·Yuki Takashima·Yawen Xue·Desh Raj·Zili Huang·Yusuke Fujita·Shinji Watanabe·Sanjeev Khudanpur

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Abstract

This paper provides a detailed description of the Hitachi-JHU system that was submitted to the Third DIHARD Speech Diarization Challenge. The system outputs the ensemble results of the five subsystems: two x-vector-based subsystems, two end-to-end neural diarization-based subsystems, and one hybrid subsystem. We refine each system and all five subsystems become competitive and complementary. After the DOVER-Lap based system combination, it achieved diarization error rates of 11.58 % and 14.09 % in Track 1 full and core, and 16.94 % and 20.01 % in Track 2 full and core, respectively. With their results, we won second place in all the tasks of the challenge.

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Shota Horiguchi, Nelson Yalta, Paola Garcia, Yuki Takashima, Yawen Xue, Desh Raj, Zili Huang, Yusuke Fujita, Shinji Watanabe, Sanjeev Khudanpur. 2021-02-02. The Hitachi-JHU DIHARD III System: Competitive End-to-End Neural Diarization and X-Vector Clustering Systems Combined by DOVER-Lap. https://arxiv.org/abs/2102.01363

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