Search Results for author: Zifeng Zhao

Found 4 papers, 1 papers with code

Functional Linear Regression with Mixed Predictors

1 code implementation1 Dec 2020 Daren Wang, Zifeng Zhao, Yi Yu, Rebecca Willett

We derive finite sample theoretical guarantees and show that the excess prediction risk of our estimator is minimax optimal.

Statistics Theory Methodology Statistics Theory

Target Confusion in End-to-end Speaker Extraction: Analysis and Approaches

no code implementations4 Apr 2022 Zifeng Zhao, Dongchao Yang, Rongzhi Gu, Haoran Zhang, Yuexian Zou

However, its performance is often inferior to that of a blind source separation (BSS) counterpart with a similar network architecture, due to the auxiliary speaker encoder may sometimes generate ambiguous speaker embeddings.

blind source separation Metric Learning +2

Speaker-Aware Mixture of Mixtures Training for Weakly Supervised Speaker Extraction

no code implementations15 Apr 2022 Zifeng Zhao, Rongzhi Gu, Dongchao Yang, Jinchuan Tian, Yuexian Zou

Dominant researches adopt supervised training for speaker extraction, while the scarcity of ideally clean corpus and channel mismatch problem are rarely considered.

Domain Adaptation

Probing Deep Speaker Embeddings for Speaker-related Tasks

no code implementations14 Dec 2022 Zifeng Zhao, Ding Pan, Junyi Peng, Rongzhi Gu

Results show that all deep embeddings encoded channel and content information in addition to speaker identity, but the extent could vary and their performance on speaker-related tasks can be tremendously different: ECAPA-TDNN is dominant in discriminative tasks, and d-vector leads the guiding tasks, while regulating task is less sensitive to the choice of speaker representations.

Speaker Recognition Speaker Verification

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