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Labeling data is often very time consuming and expensive, leaving us with a majority of unlabeled data. Self-supervised representation learning methods such as SimCLR (Chen et al., 2020) or BYOL (Grill et al., 2020) have been very…

机器学习 · 计算机科学 2025-04-24 Zhaohan Daniel Guo , Bernardo Avila Pires , Khimya Khetarpal , Dale Schuurmans , Bo Dai

Self-supervised representation learning can mitigate the limitations in recognition tasks with few manually labeled data but abundant unlabeled data---a common scenario in sound event research. In this work, we explore unsupervised…

声音 · 计算机科学 2020-11-17 Eduardo Fonseca , Diego Ortego , Kevin McGuinness , Noel E. O'Connor , Xavier Serra

Self-supervised contrastive learning (CL) has achieved remarkable empirical success, often producing representations that rival supervised pre-training on downstream tasks. Recent theory explains this by showing that the CL loss closely…

机器学习 · 计算机科学 2025-10-13 Achleshwar Luthra , Priyadarsi Mishra , Tomer Galanti

Spoken language understanding (SLU) is an essential task for machines to understand human speech for better interactions. However, errors from the automatic speech recognizer (ASR) usually hurt the understanding performance. In reality, ASR…

计算与语言 · 计算机科学 2022-06-28 Ya-Hsin Chang , Yun-Nung Chen

In this paper, we provide a new perspective on self-supervised speech models from how the training targets are obtained. We generalize the targets extractor into Offline Targets Extractor (Off-TE) and Online Targets Extractor (On-TE). Based…

计算与语言 · 计算机科学 2023-06-01 Ziyang Ma , Zhisheng Zheng , Changli Tang , Yujin Wang , Xie Chen

Self-Supervised Learning (SSL) surmises that inputs and pairwise positive relationships are enough to learn meaningful representations. Although SSL has recently reached a milestone: outperforming supervised methods in many modalities\dots…

机器学习 · 计算机科学 2022-06-13 Randall Balestriero , Yann LeCun

Incorporating contrastive learning objectives in sentence representation learning (SRL) has yielded significant improvements on many sentence-level NLP tasks. However, it is not well understood why contrastive learning works for learning…

计算与语言 · 计算机科学 2023-05-30 Chenghao Xiao , Yang Long , Noura Al Moubayed

Sound source localization aims to localize objects emitting the sound in visual scenes. Recent works obtaining impressive results typically rely on contrastive learning. However, the common practice of randomly sampling negatives in prior…

计算机视觉与模式识别 · 计算机科学 2024-08-30 Zengjie Song , Jiangshe Zhang , Yuxi Wang , Junsong Fan , Zhaoxiang Zhang

We introduce SynCLR, a novel approach for learning visual representations exclusively from synthetic images and synthetic captions, without any real data. We synthesize a large dataset of image captions using LLMs, then use an off-the-shelf…

计算机视觉与模式识别 · 计算机科学 2024-01-01 Yonglong Tian , Lijie Fan , Kaifeng Chen , Dina Katabi , Dilip Krishnan , Phillip Isola

Instance discrimination learns visual representations by treating different augmented views of the same image as positive pairs. While this encourages invariance to handcrafted transformations, same-image positives can preserve nuisance…

机器学习 · 计算机科学 2026-05-29 Mohammad Alkhalefi , Georgios Leontidis , Mingjun Zhong

Speech representation learning approaches for non-semantic tasks such as language recognition have either explored supervised embedding extraction methods using a classifier model or self-supervised representation learning approaches using…

计算与语言 · 计算机科学 2023-06-08 Shikhar Vashishth , Shikhar Bharadwaj , Sriram Ganapathy , Ankur Bapna , Min Ma , Wei Han , Vera Axelrod , Partha Talukdar

We propose SCVRL, a novel contrastive-based framework for self-supervised learning for videos. Differently from previous contrast learning based methods that mostly focus on learning visual semantics (e.g., CVRL), SCVRL is capable of…

计算机视觉与模式识别 · 计算机科学 2022-05-25 Michael Dorkenwald , Fanyi Xiao , Biagio Brattoli , Joseph Tighe , Davide Modolo

Contrastive language-image pre-training (CLIP) serves as a de-facto standard to align images and texts. Nonetheless, the loose correlation between images and texts of web-crawled data renders the contrastive objective data inefficient and…

计算机视觉与模式识别 · 计算机科学 2022-10-18 Jinghao Zhou , Li Dong , Zhe Gan , Lijuan Wang , Furu Wei

The enhancement of unsupervised learning of sentence representations has been significantly achieved by the utility of contrastive learning. This approach clusters the augmented positive instance with the anchor instance to create a desired…

计算与语言 · 计算机科学 2023-10-11 Qingfa Xiao , Shuangyin Li , Lei Chen

Speech-preserving facial expression manipulation (SPFEM) aims to modify a talking head to display a specific reference emotion while preserving the mouth animation of source spoken contents. Thus, emotion and content information existing in…

计算机视觉与模式识别 · 计算机科学 2025-04-09 Tianshui Chen , Jianman Lin , Zhijing Yang , Chumei Qing , Yukai Shi , Liang Lin

We present a method for transferring pre-trained self-supervised (SSL) speech representations to multiple languages. There is an abundance of unannotated speech, so creating self-supervised representations from raw audio and fine-tuning on…

音频与语音处理 · 电气工程与系统科学 2022-02-08 Samuel Kessler , Bethan Thomas , Salah Karout

The recent success of SimCSE has greatly advanced state-of-the-art sentence representations. However, the original formulation of SimCSE does not fully exploit the potential of hard negative samples in contrastive learning. This study…

计算与语言 · 计算机科学 2023-10-24 Pengyue Hou , Xingyu Li

Recent methods in self-supervised learning have demonstrated that masking-based pretext tasks extend beyond NLP, serving as useful pretraining objectives in computer vision. However, existing approaches apply random or ad hoc masking…

计算机视觉与模式识别 · 计算机科学 2022-12-19 Dylan Sam , Min Bai , Tristan McKinney , Li Erran Li

Recent breakthroughs in semi-supervised semantic segmentation have been developed through contrastive learning. In prevalent pixel-wise contrastive learning solutions, the model maps pixels to deterministic representations and regularizes…

计算机视觉与模式识别 · 计算机科学 2022-12-19 Haoyu Xie , Changqi Wang , Mingkai Zheng , Minjing Dong , Shan You , Chong Fu , Chang Xu

Self-supervised learning in speech involves training a speech representation network on a large-scale unannotated speech corpus, and then applying the learned representations to downstream tasks. Since the majority of the downstream tasks…