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Brain decoding involves the determination of a subject's cognitive state or an associated stimulus from functional neuroimaging data measuring brain activity. In this setting the cognitive state is typically characterized by an element of a…

Machine Learning · Statistics 2015-04-14 Nicole Croteau , Farouk S. Nathoo , Jiguo Cao , Ryan Budney

Expansion-enhanced sparse lexical representation improves information retrieval (IR) by minimizing vocabulary mismatch problems during lexical matching. In this paper, we explore the potential of jointly learning dense semantic…

Machine Learning · Computer Science 2024-05-24 Biplob Biswas , Rajiv Ramnath

Machine learning analysis of longitudinal neuroimaging data is typically based on supervised learning, which requires a large number of ground-truth labels to be informative. As ground-truth labels are often missing or expensive to obtain…

Machine Learning · Computer Science 2021-06-29 Qingyu Zhao , Zixuan Liu , Ehsan Adeli , Kilian M. Pohl

Decoding sensory experiences from neural activity to reconstruct human-perceived visual stimuli and semantic content remains a challenge in neuroscience and artificial intelligence. Despite notable progress in current brain decoding models,…

Neurons and Cognition · Quantitative Biology 2025-10-13 Feihan Feng , Jingxin Nie

In this study, Disentanglement in Difference(DiD) is proposed to address the inherent inconsistency between the statistical independence of latent variables and the goal of semantic disentanglement in disentanglement representation…

Machine Learning · Computer Science 2025-04-04 Xingshen Zhang , Lin Wang , Shuangrong Liu , Xintao Lu , Chaoran Pang , Bo Yang

In this work, we introduce a novel problem setup termed as Heterogeneous Semi-Supervised Learning (HSSL), which presents unique challenges by bridging the semi-supervised learning (SSL) task and the unsupervised domain adaptation (UDA)…

Machine Learning · Computer Science 2025-03-04 Marzi Heidari , Abdullah Alchihabi , Hao Yan , Yuhong Guo

Multimodal emotion recognition in conversations aims to infer utterance-level emotions by jointly modeling textual, acoustic, and visual cues within context. Despite recent progress, key challenges remain, including redundant cross-modal…

Sound · Computer Science 2026-04-17 Chengling Guo , Yuntao Shou , Tao Meng , Wei Ai , Yun Tan , Keqin Li

Deep learning techniques have revolutionized the field of machine learning and were recently successfully applied to various classification problems in noninvasive electroencephalography (EEG). However, these methods were so far only rarely…

We address prevailing challenges of the brain-powered research, departing from the observation that the literature hardly recover accurate spatial information and require subject-specific models. To address these challenges, we propose…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Weihao Xia , Raoul de Charette , Cengiz Öztireli , Jing-Hao Xue

Despite the rapid progress of end-to-end (E2E) automatic speech recognition (ASR), it has been shown that incorporating external language models (LMs) into the decoding can further improve the recognition performance of E2E ASR systems. To…

Computation and Language · Computer Science 2022-04-13 Jinchuan Tian , Jianwei Yu , Chao Weng , Yuexian Zou , Dong Yu

This study introduces EM2LDL, a novel multilingual speech corpus designed to advance mixed emotion recognition through label distribution learning. Addressing the limitations of predominantly monolingual and single-label emotion corpora…

Computation and Language · Computer Science 2025-11-26 Xingfeng Li , Xiaohan Shi , Junjie Li , Yongwei Li , Masashi Unoki , Tomoki Toda , Masato Akagi

In real-world datasets, the challenges of long-tailed distributions and noisy labels often coexist, posing obstacles to the model training and performance. Existing studies on long-tailed noisy label learning (LTNLL) typically assume that…

Machine Learning · Computer Science 2025-03-17 Chen Shu , Mengke Li , Yiqun Zhang , Yang Lu , Bo Han , Yiu-ming Cheung , Hanzi Wang

Despite extensive standardization, diagnostic interviews for mental health disorders encompass substantial subjective judgment. Previous studies have demonstrated that EEG-based neural measures can function as reliable objective correlates…

Machine Learning · Computer Science 2020-11-19 Garrett Honke , Irina Higgins , Nina Thigpen , Vladimir Miskovic , Katie Link , Sunny Duan , Pramod Gupta , Julia Klawohn , Greg Hajcak

In this paper, we propose an effective training strategy to ex-tract robust speaker representations from a speech signal. Oneof the key challenges in speaker recognition tasks is to learnlatent representations or embeddings containing…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-05 Yoohwan Kwon , Soo-Whan Chung , Hong-Goo Kang

Structural magnetic resonance imaging (sMRI) provides accurate estimates of the brain's structural organization and learning invariant brain representations from sMRI is an enduring issue in neuroscience. Previous deep representation…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Ning Jiang , Gongshu Wang , Tianyi Yan

Brain-computer interfaces (BCI) offer numerous human-centered application possibilities, particularly affecting people with neurological disorders. Text or speech decoding from brain activities is a relevant domain that could augment the…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-10 Jihwan Lee , Tiantian Feng , Aditya Kommineni , Sudarsana Reddy Kadiri , Shrikanth Narayanan

Self-supervised speaker embeddings are widely used in speaker verification systems, but prior work has shown that they often encode sensitive demographic attributes, raising fairness and privacy concerns. This paper investigates the extent…

Recent works of music representation learning mainly focus on learning acoustic music representations with unlabeled audios or further attempt to acquire multi-modal music representations with scarce annotated audio-text pairs. They either…

Sound · Computer Science 2025-05-30 Xiaofeng Pan , Jing Chen , Haitong Zhang , Menglin Xing , Jiayi Wei , Xuefeng Mu , Zhongqian Xie

Intracranial EEG (iEEG) recording, characterized by high spatial and temporal resolution and superior signal-to-noise ratio (SNR), enables the development of precise brain-computer interface (BCI) systems for neural decoding. However, the…

Human-Computer Interaction · Computer Science 2025-12-09 Maryam Ostadsharif Memar , Navid Ziaei , Behzad Nazari

Representation learning plays a central role in structuring internal embeddings to capture the statistical properties of language, influencing the coherence and contextual consistency of generated text. Statistical Coherence Alignment is…

Computation and Language · Computer Science 2025-08-11 Jonathan Gale , Godfrey Aldington , Harriet Thistlewood , Thomas Tattershall , Basil Wentworth , Vincent Enoasmo