|
| 论文编号: |
|
| 第一作者所在部门: |
|
| 中文论文题目: |
Centroid-aware local discriminative metric learning in speaker verification
|
| 英文论文题目: |
Centroid-aware local discriminative metric learning in speaker verification
|
| 论文题目英文: |
|
| 作者: |
Sheng, Kekai
|
| 论文出处: |
|
| 刊物名称: |
PATTERN RECOGNITION
|
| 年: |
2017
|
| 卷: |
72 |
| 期: |
72 |
| 页: |
176-185 |
| 联系作者: |
|
| 收录类别: |
|
| 影响因子: |
|
| 摘要: |
We propose a new mechanism to pave the way for efficient learning against class-imbalance and improve representation of identity vector (i-vector) in automatic speaker verification (ASV). The insight is to effectively exploit the inherent structure within ASV corpus - centroid priori. In particular: (1) to ensure learning efficiency against class-imbalance, the centroid-aware balanced boosting sampling is proposed to collect balanced mini-batch; (2) to strengthen local discriminative modeling on the mini-batches, neighborhood component analysis (NCA) and magnet loss (MNL) are adopted in ASV-specific modifications. The integration creates adaptive NCA (AdaNCA) and linear MNL (LMNL). Numerical results show that LMNL is a competitive candidate for low-dimensional projection on i-vector (EER=3.84% on SRE2008, EER=1.81% on SRE2010), enjoying competitive edge over linear discriminant analysis (LDA). AdaNCA (EER=4.03% on SRE2008, EER=2.05% on SRE2010) also performs well. Furthermore, to facilitate the future study on boosting sampling, connections between boosting sampling, hinge loss and data augmentation have been established, which help understand the behavior of boosting sampling further. (C) 2017 Elsevier Ltd. All rights reserved. |
| 英文摘要: |
|
| 外单位作者单位: |
|
| 备注: |
|
关闭窗口 |
|
