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This paper presents novel techniques for enhancing the performance of knowledge tracing (KT) models by focusing on the crucial factor of question and concept difficulty level. Despite the acknowledged significance of difficulty, previous KT…

计算与语言 · 计算机科学 2023-12-20 Unggi Lee , Sungjun Yoon , Joon Seo Yun , Kyoungsoo Park , YoungHoon Jung , Damji Stratton , Hyeoncheol Kim

Contrastive learning (CL) has emerged as a powerful technique for representation learning, with or without label supervision. However, supervised CL is prone to collapsing representations of subclasses within a class by not capturing all…

机器学习 · 计算机科学 2023-05-30 Yihao Xue , Siddharth Joshi , Eric Gan , Pin-Yu Chen , Baharan Mirzasoleiman

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

Contrastive Learning (CL) performances as a rising approach to address the challenge of sparse and noisy recommendation data. Although having achieved promising results, most existing CL methods only perform either hand-crafted data or…

信息检索 · 计算机科学 2023-11-22 Xiuyuan Qin , Huanhuan Yuan , Pengpeng Zhao , Junhua Fang , Fuzhen Zhuang , Guanfeng Liu , Victor Sheng

Spoken language understanding (SLU) is a core task in task-oriented dialogue systems, which aims at understanding the user's current goal through constructing semantic frames. SLU usually consists of two subtasks, including intent detection…

计算与语言 · 计算机科学 2024-06-03 Xuxin Cheng , Wanshi Xu , Zhihong Zhu , Hongxiang Li , Yuexian Zou

Sentence Representation Learning (SRL) is a crucial task in Natural Language Processing (NLP), where contrastive Self-Supervised Learning (SSL) is currently a mainstream approach. However, the reasons behind its remarkable effectiveness…

计算与语言 · 计算机科学 2024-06-06 Mingxin Li , Richong Zhang , Zhijie Nie

We propose a novel contrastive learning framework to effectively address the challenges of data heterogeneity in federated learning. We first analyze the inconsistency of gradient updates across clients during local training and establish…

机器学习 · 计算机科学 2024-06-03 Seonguk Seo , Jinkyu Kim , Geeho Kim , Bohyung Han

Consistency regularization has prevailed in semi-supervised semantic segmentation and achieved promising performance. However, existing methods typically concentrate on enhancing the Image-augmentation based Prediction consistency and…

多媒体 · 计算机科学 2025-03-25 Jianjian Yin , Tao Chen , Gensheng Pei , Yazhou Yao , Liqiang Nie , Xiansheng Hua

Representation learning has significantly been developed with the advance of contrastive learning methods. Most of those methods have benefited from various data augmentations that are carefully designated to maintain their identities so…

计算机视觉与模式识别 · 计算机科学 2022-01-24 Xiao Wang , Guo-Jun Qi

Invariant Contrastive Learning (ICL) methods have achieved impressive performance across various domains. However, the absence of latent space representation for distortion (augmentation)-related information in the latent space makes ICL…

Adversarial training (AT) for robust representation learning and self-supervised learning (SSL) for unsupervised representation learning are two active research fields. Integrating AT into SSL, multiple prior works have accomplished a…

计算机视觉与模式识别 · 计算机科学 2022-07-25 Chaoning Zhang , Kang Zhang , Chenshuang Zhang , Axi Niu , Jiu Feng , Chang D. Yoo , In So Kweon

In recent times, contrastive learning based loss functions have become increasingly popular for visual self-supervised representation learning owing to their state-of-the-art (SOTA) performance. Most of the modern contrastive learning…

计算机视觉与模式识别 · 计算机科学 2024-10-31 Chaitanya Animesh , Manmohan Chandraker

In high-stakes medical applications, consistent answering across diverse question phrasings is essential for reliable diagnosis. However, we reveal that current Medical Vision-Language Models (Med-VLMs) exhibit concerning fragility in…

计算与语言 · 计算机科学 2025-08-27 Songtao Jiang , Yuxi Chen , Sibo Song , Yan Zhang , Yeying Jin , Yang Feng , Jian Wu , Zuozhu Liu

Recently, image-text matching has attracted more and more attention from academia and industry, which is fundamental to understanding the latent correspondence across visual and textual modalities. However, most existing methods implicitly…

计算机视觉与模式识别 · 计算机科学 2024-01-09 Yang Qin , Yuan Sun , Dezhong Peng , Joey Tianyi Zhou , Xi Peng , Peng Hu

Biologically inspired spiking neural networks (SNNs) have garnered considerable attention due to their low-energy consumption and spatio-temporal information processing capabilities. Most existing SNNs training methods first integrate…

计算机视觉与模式识别 · 计算机科学 2023-05-24 Haonan Qiu , Zeyin Song , Yanqi Chen , Munan Ning , Wei Fang , Tao Sun , Zhengyu Ma , Li Yuan , Yonghong Tian

Many Click-Through Rate (CTR) prediction works focused on designing advanced architectures to model complex feature interactions but neglected the importance of feature representation learning, e.g., adopting a plain embedding layer for…

信息检索 · 计算机科学 2022-12-02 Fangye Wang , Yingxu Wang , Dongsheng Li , Hansu Gu , Tun Lu , Peng Zhang , Ning Gu

Sign Language Translation (SLT) bridges the communication gap between deaf people and hearing people, where dialogue provides crucial contextual cues to aid in translation. Building on this foundational concept, this paper proposes…

计算与语言 · 计算机科学 2025-09-18 Zekang Liu , Wei Feng , Fanhua Shang , Lianyu Hu , Jichao Feng , Liqing Gao

Multi-modal reasoning in visual question answering (VQA) has witnessed rapid progress recently. However, most reasoning models heavily rely on shortcuts learned from training data, which prevents their usage in challenging real-world…

计算机视觉与模式识别 · 计算机科学 2022-11-22 Qi Zheng , Chaoyue Wang , Daqing Liu , Dadong Wang , Dacheng Tao

Contrastive learning (CL) is one of the most successful paradigms for self-supervised learning (SSL). In a principled way, it considers two augmented "views" of the same image as positive to be pulled closer, and all other images as…

机器学习 · 计算机科学 2023-06-21 Chun-Hsiao Yeh , Cheng-Yao Hong , Yen-Chi Hsu , Tyng-Luh Liu , Yubei Chen , Yann LeCun

Continual Learning (CL) investigates how to train Deep Networks on a stream of tasks without incurring forgetting. CL settings proposed in literature assume that every incoming example is paired with ground-truth annotations. However, this…