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The rapid advancement of large language models (LLMs) has led to growing interest in using synthetic data to train future models. However, this creates a self-consuming retraining loop, where models are trained on their own outputs and may…

Artificial Intelligence · Computer Science 2026-01-09 Yaxuan Wang , Zhongteng Cai , Yujia Bao , Xueru Zhang , Yang Liu

Large Language Models (LLMs) are increasingly being integrated into various components of Ontology Matching pipelines. This paper investigates the capability of LLMs to perform ontology matching directly on ontology modules and generate the…

Computation and Language · Computer Science 2025-12-01 Guilherme Sousa , Rinaldo Lima , Cassia Trojahn

State-of-the-art statistical parametric speech synthesis (SPSS) generally uses a vocoder to represent speech signals and parameterize them into features for subsequent modeling. Magnitude spectrum has been a dominant feature over the years.…

Sound · Computer Science 2015-10-08 Bo Fan , Siu Wa Lee , Xiaohai Tian , Lei Xie , Minghui Dong

Training a high performance end-to-end speech (E2E) processing model requires an enormous amount of labeled speech data, especially in the era of data-centric artificial intelligence. However, labeled speech data are usually scarcer and…

Computation and Language · Computer Science 2023-10-25 Jianqiao Lu , Wenyong Huang , Nianzu Zheng , Xingshan Zeng , Yu Ting Yeung , Xiao Chen

Flow-Matching (FM)-based zero-shot text-to-speech (TTS) systems exhibit high-quality speech synthesis and robust generalization capabilities. However, the speaker representation ability of such systems remains underexplored, primarily due…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-18 Haoyu Li , Mingyang Han , Yu Xi , Dongxiao Wang , Hankun Wang , Haoxiang Shi , Boyu Li , Jun Song , Bo Zheng , Shuai Wang , Kai Yu

Recently, using large language models (LLMs) for data augmentation has led to considerable improvements in unsupervised sentence embedding models. However, existing methods encounter two primary challenges: limited data diversity and high…

Computation and Language · Computer Science 2025-10-07 Peichao Lai , Zhengfeng Zhang , Wentao Zhang , Fangcheng Fu , Bin Cui

While generative methods have progressed rapidly in recent years, generating expressive prosody for an utterance remains a challenging task in text-to-speech synthesis. This is particularly true for systems that model prosody explicitly…

Audio and Speech Processing · Electrical Eng. & Systems 2025-07-02 Paul Mayer , Florian Lux , Alejandro Pérez-González-de-Martos , Angelina Elizarova , Lindsey Vanderlyn , Dirk Väth , Ngoc Thang Vu

Recent speech language models (SLMs) typically incorporate pre-trained speech models to extend the capabilities from large language models (LLMs). In this paper, we propose a Descriptive Speech-Text Alignment approach that leverages speech…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-28 Ke-Han Lu , Zhehuai Chen , Szu-Wei Fu , He Huang , Boris Ginsburg , Yu-Chiang Frank Wang , Hung-yi Lee

Although humans engaged in face-to-face conversation simultaneously communicate both verbally and non-verbally, methods for joint and unified synthesis of speech audio and co-speech 3D gesture motion from text are a new and emerging field.…

Human-Computer Interaction · Computer Science 2024-05-01 Shivam Mehta , Anna Deichler , Jim O'Regan , Birger Moëll , Jonas Beskow , Gustav Eje Henter , Simon Alexanderson

The effectiveness of Large Language Models (LLMs) diminishes for extremely low-resource languages, such as indigenous languages, primarily due to the lack of labeled data. Despite growing interest, the availability of high-quality natural…

Computation and Language · Computer Science 2026-03-23 Ulin Nuha , Adam Jatowt

Data augmentation (DA) is crucial to mitigate model training instability and over-fitting problems in low-resource open-domain dialogue generation. However, traditional DA methods often neglect semantic data diversity, restricting the…

Computation and Language · Computer Science 2024-04-02 Zhenhua Liu , Tong Zhu , Jianxiang Xiang , Wenliang Chen

The pursuit of a "unified" discrete token for both speech understanding and generation has led the Speech Language Model (SLM) community to heavily rely on Word Error Rate (WER) -- the core metric for Whisper-style tokenizers -- as the…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-29 Xiangyu Zhang , Yuxin Li , Haoyang Zhang , Shiqi Han , Hexin Liu , Qiquan Zhang , Beena Ahmed , Julien Epps

Voice imitation aims to transform source speech to match a reference speaker's timbre and speaking style while preserving linguistic content. A straightforward approach is to train on triplets of (source, reference, target), where source…

Sound · Computer Science 2026-04-21 Tao Feng , Yuxiang Wang , Yuancheng Wang , Xueyao Zhang , Dekun Chen , Chaoren Wang , Xun Guan , Zhizheng Wu

In multi-speaker speech synthesis, data from a number of speakers usually tend to have great diversity due to the fact that the speakers may differ largely in ages, speaking styles, emotions, and so on. It is important but challenging to…

Sound · Computer Science 2022-02-14 Qinghua Wu , Quanbo Shen , Jian Luan , YuJun Wang

Recent advances in neural TTS have led to models that can produce high-quality synthetic speech. However, these models typically require large amounts of training data, which can make it costly to produce a new voice with the desired…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-25 Marcel de Korte , Jaebok Kim , Esther Klabbers

Existing Speech Language Model (SLM) scaling analysis paints a bleak picture. It predicts that SLMs require much more compute and data compared to text, leading some to question the feasibility of training high-quality SLMs. However, modern…

Computation and Language · Computer Science 2025-07-29 Gallil Maimon , Michael Hassid , Amit Roth , Yossi Adi

Semantically meaningful sentence embeddings are important for numerous tasks in natural language processing. To obtain such embeddings, recent studies explored the idea of utilizing synthetically generated data from pretrained language…

Computation and Language · Computer Science 2022-08-31 Taehee Kim , ChaeHun Park , Jimin Hong , Radhika Dua , Edward Choi , Jaegul Choo

This paper proposes a framework to address the issue of data scarcity in Document-Grounded Dialogue Systems(DGDS). Our model leverages high-resource languages to enhance the capability of dialogue generation in low-resource languages.…

Computation and Language · Computer Science 2023-09-21 Qi Gou , Zehua Xia , Wenzhe Du

Collecting high-quality training data is essential for fine-tuning Large Language Models (LLMs). However, acquiring such data is often costly and time-consuming, especially for non-English languages such as Italian. Recently, researchers…

Computation and Language · Computer Science 2025-04-01 Fatemeh Mohammadi , Tommaso Romano , Samira Maghool , Paolo Ceravolo

Recent research shows synthetic data as a source of supervision helps pretrained language models (PLM) transfer learning to new target tasks/domains. However, this idea is less explored for spatial language. We provide two new data…

Computation and Language · Computer Science 2022-11-07 Roshanak Mirzaee , Parisa Kordjamshidi