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Heteroscedastic regression considering the varying noises among observations has many applications in the fields like machine learning and statistics. Here we focus on the heteroscedastic Gaussian process (HGP) regression which integrates…

Machine Learning · Statistics 2020-01-22 Haitao Liu , Yew-Soon Ong , Jianfei Cai

Many data-driven approaches exist to extract neural representations of functional magnetic resonance imaging (fMRI) data, but most of them lack a proper probabilistic formulation. We propose a group level scalable probabilistic sparse…

A key challenge in dysarthric speech recognition is the speaker-level diversity attributed to both speaker-identity associated factors such as gender, and speech impairment severity. Most prior researches on addressing this issue focused on…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-19 Mengzhe Geng , Zengrui Jin , Tianzi Wang , Shujie Hu , Jiajun Deng , Mingyu Cui , Guinan Li , Jianwei Yu , Xurong Xie , Xunying Liu

Principal component analysis (PCA) is a classical and ubiquitous method for reducing data dimensionality, but it is suboptimal for heterogeneous data that are increasingly common in modern applications. PCA treats all samples uniformly so…

Statistics Theory · Mathematics 2021-12-02 David Hong , Kyle Gilman , Laura Balzano , Jeffrey A. Fessler

Accurate and efficient auscultation-based diagnostics are vital for early disease detection, especially in resource-limited settings where specialized clinical expertise is scarce. Traditional auscultation, which heavily depends on…

Sound · Computer Science 2025-03-26 Pingjie Wang , Liudan Zhao , Zihan Zhao , Miao He , Xin Sun , Ya Zhang , Kun Sun , Yanfeng Wang , Yu Wang

Generating speech-consistent body and gesture movements is a long-standing problem in virtual avatar creation. Previous studies often synthesize pose movement in a holistic manner, where poses of all joints are generated simultaneously.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Xian Liu , Qianyi Wu , Hang Zhou , Yinghao Xu , Rui Qian , Xinyi Lin , Xiaowei Zhou , Wayne Wu , Bo Dai , Bolei Zhou

Large Language Models (LLMs) are increasingly deployed across diverse domains, raising the need for rigorous reliability assessment methods. Existing benchmark-based evaluations primarily offer descriptive statistics of model accuracy over…

Software Engineering · Computer Science 2026-01-30 Robab Aghazadeh-Chakherlou , Qing Guo , Siddartha Khastgir , Peter Popov , Xiaoge Zhang , Xingyu Zhao

In many longitudinal studies, a large number of variables are measured repeatedly over time, with substantial missing data. Existing methods, such as probabilistic principal component analysis (PPCA), are ill-equipped to handle such…

Methodology · Statistics 2026-04-27 Xinyu Zhang , Ameer Qaqish , D. Y. Lin , Didong Li

The ability to learn universal audio representations that can solve diverse speech, music, and environment tasks can spur many applications that require general sound content understanding. In this work, we introduce a holistic audio…

Lip Reading, or Visual Automatic Speech Recognition (V-ASR), is a complex task requiring the interpretation of spoken language exclusively from visual cues, primarily lip movements and facial expressions. This task is especially challenging…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Marshall Thomas , Edward Fish , Richard Bowden

High-fidelity agent initialization is crucial for credible Agent-Based Modeling across diverse domains. A robust framework should be Topic-Adaptive, capturing macro-level joint distributions while ensuring micro-level individual…

Artificial Intelligence · Computer Science 2026-04-07 Rongxin Chen , Tianyu Wu , Bingbing Xu , Jiatang Luo , Xiucheng Xu , Huawei Shen

Speech disfluencies, such as filled pauses or repetitions, are disruptions in the typical flow of speech. Stuttering is a speech disorder characterized by a high rate of disfluencies, but all individuals speak with some disfluencies and the…

Audio and Speech Processing · Electrical Eng. & Systems 2023-11-03 Amrit Romana , Kazuhito Koishida , Emily Mower Provost

Automating dysarthria assessments offers the opportunity to develop practical, low-cost tools that address the current limitations of manual and subjective assessments. Nonetheless, the small size of most dysarthria datasets makes it…

Computation and Language · Computer Science 2024-03-26 Xavier F. Cadet , Ranya Aloufi , Sara Ahmadi-Abhari , Hamed Haddadi

This contribution introduces a dataset of 7th-order Ambisonic Room Impulse Responses (HOA-RIRs), created using the Image Source Method. By employing higher-order Ambisonics, our dataset enables precise spatial audio reproduction, a critical…

Sound · Computer Science 2025-06-02 Shivam Saini , Jürgen Peissig

Event-based semantic segmentation has gained popularity due to its capability to deal with scenarios under high-speed motion and extreme lighting conditions, which cannot be addressed by conventional RGB cameras. Since it is hard to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Linglin Jing , Yiming Ding , Yunpeng Gao , Zhigang Wang , Xu Yan , Dong Wang , Gerald Schaefer , Hui Fang , Bin Zhao , Xuelong Li

Large pretrained generative models like GPT-3 often suffer from hallucinating non-existent or incorrect content, which undermines their potential merits in real applications. Existing work usually attempts to detect these hallucinations…

Computation and Language · Computer Science 2022-04-05 Tianyu Liu , Yizhe Zhang , Chris Brockett , Yi Mao , Zhifang Sui , Weizhu Chen , Bill Dolan

Early detection of Alzheimer's Dementia (AD) and Mild Cognitive Impairment (MCI) is critical for timely intervention, yet current diagnostic approaches remain resource-intensive and invasive. Speech, encompassing both acoustic and…

Speech disfluencies in spontaneous communication can be categorized as either typical or atypical. Typical disfluencies, such as hesitations and repetitions, are natural occurrences in everyday speech, while atypical disfluencies are…

Audio and Speech Processing · Electrical Eng. & Systems 2024-11-27 Priyanka Kommagouni , Vamshiraghusimha Narasinga , Purva Barche , Sai Akarsh C , Anil Vuppala

Face Anti-Spoofing (FAS) is essential for ensuring the security and reliability of facial recognition systems. Most existing FAS methods are formulated as binary classification tasks, providing confidence scores without interpretation. They…

Computer Vision and Pattern Recognition · Computer Science 2025-01-27 Guosheng Zhang , Keyao Wang , Haixiao Yue , Ajian Liu , Gang Zhang , Kun Yao , Errui Ding , Jingdong Wang

Hallucination remains a key obstacle to the reliable deployment of large language models (LLMs) in real-world question answering tasks. A widely adopted strategy to detect hallucination, known as self-assessment, relies on the model's own…

Artificial Intelligence · Computer Science 2025-06-04 Jinyuan Luo , Zhen Fang , Yixuan Li , Seongheon Park , Ling Chen