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Deep learning-based domain adaptation (DA) methods have shown strong performance by learning transferable representations. However, their reliance on mini-batch training limits global distribution modeling, leading to unstable alignment and…

Machine Learning · Computer Science 2025-11-18 Lingkun Luo , Shiqiang Hu , Liming Chen

In real-life conditions, mismatch between development and test domain degrades speaker recognition performance. To solve the issue, many researchers explored domain adaptation approaches using matched in-domain dataset. However, adaptation…

Sound · Computer Science 2017-08-29 Suwon Shon , Seongkyu Mun , Wooil Kim , Hanseok Ko

Standard probabilistic linear discriminant analysis (PLDA) for speaker recognition assumes that the sample's features (usually, i-vectors) are given by a sum of three terms: a term that depends on the speaker identity, a term that models…

Machine Learning · Computer Science 2018-01-17 Luciana Ferrer

Probabilistic linear discriminant analysis (PLDA) is a popular normalization approach for the i-vector model, and has delivered state-of-the-art performance in speaker recognition. A potential problem of the PLDA model, however, is that it…

Sound · Computer Science 2016-04-01 Lantian Li , Dong Wang , Chao Xing , Thomas Fang Zheng

Large Audio-Language Models (LALMs) have demonstrated remarkable performance in end-to-end speaker diarization and recognition. However, their speaker discriminability remains limited due to the scarcity of large-scale conversational data…

State-of-the-art i-vector based speaker verification relies on variants of Probabilistic Linear Discriminant Analysis (PLDA) for discriminant analysis. We are mainly motivated by the recent work of the joint Bayesian (JB) method, which is…

Sound · Computer Science 2017-01-20 Yiyan Wang , Haotian Xu , Zhijian Ou

Probabilistic linear discriminant analysis (PLDA) is a method used for biometric problems like speaker or face recognition that models the variability of the samples using two latent variables, one that depends on the class of the sample…

Machine Learning · Computer Science 2019-11-27 Luciana Ferrer , Mitchell McLaren

Domain adaptation aims to exploit the knowledge in source domain to promote the learning tasks in target domain, which plays a critical role in real-world applications. Recently, lots of deep learning approaches based on autoencoders have…

Machine Learning · Computer Science 2019-11-01 Shuai Yang , Hao Wang , Yuhong Zhang , Pei-Pei Li , Yi Zhu , Xuegang Hu

State-of-the-art speaker recognition systems are trained with a large amount of human-labeled training data set. Such a training set is usually composed of various data sources to enhance the modeling capability of models. However, in…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-03 Rongjin Li , Weibin Zhang , Dongpeng Chen

Deep learning models can achieve high accuracy when trained on large amounts of labeled data. However, real-world scenarios often involve several challenges: Training data may become available in installments, may originate from multiple…

Computer Vision and Pattern Recognition · Computer Science 2023-02-14 Boqi Chen , Kevin Thandiackal , Pushpak Pati , Orcun Goksel

Probabilistic linear discriminant analysis (PLDA) has broad application in open-set verification tasks, such as speaker verification. A key concern for PLDA is that the model is too simple (linear Gaussian) to deal with complicated data;…

Sound · Computer Science 2021-11-25 Di Wang , Lantian Li , Hongzhi Yu , Dong Wang

In speaker-independent speech emotion recognition, the training and testing samples are collected from diverse speakers, leading to a multi-domain shift challenge across the feature distributions of data from different speakers.…

Sound · Computer Science 2024-01-19 Cheng Lu , Yuan Zong , Hailun Lian , Yan Zhao , Björn Schuller , Wenming Zheng

Spoken Language Models (SLMs) are increasingly central to modern speech-driven applications, but performance degrades under acoustic shift - real-world noise, reverberation, and microphone variation. Prior solutions rely on offline domain…

Speaker adaptation aims to estimate a speaker specific acoustic model from a speaker independent one to minimize the mismatch between the training and testing conditions arisen from speaker variabilities. A variety of neural network…

Sound · Computer Science 2019-01-01 Ke Wang , Junbo Zhang , Yujun Wang , Lei Xie

Preference tuning aligns pretrained language models to human judgments of quality, helpfulness, or safety by optimizing over explicit preference signals rather than likelihood alone. Prior work has shown that preference-tuning degrades…

Computation and Language · Computer Science 2026-01-12 Constantinos Karouzos , Xingwei Tan , Nikolaos Aletras

Unlike images and natural language tokens, time series data is highly semantically sparse, resulting in labor-intensive label annotations. Unsupervised and Semi-supervised Domain Adaptation (UDA and SSDA) have demonstrated efficiency in…

Machine Learning · Computer Science 2024-10-10 Gang Tu , Dan Li , Bingxin Lin , Zibin Zheng , See-Kiong Ng

Speech systems developed for a particular choice of acoustic domain and sampling frequency do not translate easily to others. The usual practice is to learn domain adaptation and bandwidth extension models independently. Contrary to this,…

Audio and Speech Processing · Electrical Eng. & Systems 2022-04-01 Saurabh Kataria , Jesús Villalba , Laureano Moro-Velázquez , Najim Dehak

In multi-speaker applications is common to have pre-computed models from enrolled speakers. Using these models to identify the instances in which these speakers intervene in a recording is the task of speaker tracking. In this paper, we…

Conventional automatic speaker verification systems can usually be decomposed into a front-end model such as time delay neural network (TDNN) for extracting speaker embeddings and a back-end model such as statistics-based probabilistic…

Audio and Speech Processing · Electrical Eng. & Systems 2022-09-02 Chang Zeng , Xiaoxiao Miao , Xin Wang , Erica Cooper , Junichi Yamagishi

Accurate engagement estimation is essential for adaptive human-computer interaction systems, yet robust deployment is hindered by poor generalizability across diverse domains and challenges in modeling complex interaction dynamics.To tackle…

Computer Vision and Pattern Recognition · Computer Science 2025-08-21 Yangche Yu , Yin Chen , Jia Li , Peng Jia , Yu Zhang , Li Dai , Zhenzhen Hu , Meng Wang , Richang Hong