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Contrastive learning has shown outstanding performances in both supervised and unsupervised learning, and has recently been introduced to solve weakly supervised learning problems such as semi-supervised learning and noisy label learning.…

机器学习 · 计算机科学 2023-06-08 Jingyi Cui , Weiran Huang , Yifei Wang , Yisen Wang

Algorithms designed for addressing typical supervised classification problems can only learn from a fixed set of samples and labels, making them unsuitable for the real world, where data arrives as a stream of samples often associated with…

机器学习 · 计算机科学 2024-02-08 Sourav Mishra , Shirin Dora , Suresh Sundaram

Large language models (LLMs) fine-tuned with alignment techniques, such as reinforcement learning from human feedback, have been instrumental in developing some of the most capable AI systems to date. Despite their success, existing methods…

计算与语言 · 计算机科学 2025-07-01 Kyuyoung Kim , Ah Jeong Seo , Hao Liu , Jinwoo Shin , Kimin Lee

Contrastive learning-based recommendation algorithms have significantly advanced the field of self-supervised recommendation, particularly with BPR as a representative ranking prediction task that dominates implicit collaborative filtering.…

信息检索 · 计算机科学 2024-03-13 Shipeng Song , Bin Liu , Fei Teng , Tianrui Li

Existing algorithms aiming to learn a binary classifier from positive (P) and unlabeled (U) data generally require estimating the class prior or label noises ahead of building a classification model. However, the estimation and classifier…

机器学习 · 计算机科学 2020-09-01 Tianyu Li , Chien-Chih Wang , Yukun Ma , Patricia Ortal , Qifang Zhao , Bjorn Stenger , Yu Hirate

Deep neural networks have shown great success in representation learning. However, when learning with noisy labels (LNL), they can easily overfit and fail to generalize to new data. This paper introduces a simple and effective method, named…

计算机视觉与模式识别 · 计算机科学 2024-03-29 Yuyin Zhou , Xianhang Li , Fengze Liu , Qingyue Wei , Xuxi Chen , Lequan Yu , Cihang Xie , Matthew P. Lungren , Lei Xing

While pre-trained language models excel at semantic understanding, they often struggle to capture nuanced affective information critical for affective recognition tasks. To address these limitations, we propose a novel framework for…

计算与语言 · 计算机科学 2025-03-03 Seungah Son , Andrez Saurez , Dongsoo Har

With the increasing multimedia information, multimodal recommendation has received extensive attention. It utilizes multimodal information to alleviate the data sparsity problem in recommendation systems, thus improving recommendation…

信息检索 · 计算机科学 2024-03-01 Jinfeng Xu , Zheyu Chen , Shuo Yang , Jinze Li , Hewei Wang , Edith C. -H. Ngai

Most recommender systems optimize the model on observed interaction data, which is affected by the previous exposure mechanism and exhibits many biases like popularity bias. The loss functions, such as the mostly used pointwise Binary…

信息检索 · 计算机科学 2022-04-27 Qi Wan , Xiangnan He , Xiang Wang , Jiancan Wu , Wei Guo , Ruiming Tang

In many applications, training machine learning models involves using large amounts of human-annotated data. Obtaining precise labels for the data is expensive. Instead, training with weak supervision provides a low-cost alternative. We…

机器学习 · 计算机科学 2022-02-09 Chidubem Arachie , Bert Huang

Learning from implicit feedback has become the standard paradigm for modern recommender systems. However, this setting is fraught with the persistent challenge of false negatives, where unobserved user-item interactions are not necessarily…

信息检索 · 计算机科学 2026-01-09 Minglei Yin , Chuanbo Hu , Bin Liu , Neil Zhenqiang Gong , Yanfang , Ye , Xin Li

Training NLP systems typically assumes access to annotated data that has a single human label per example. Given imperfect labeling from annotators and inherent ambiguity of language, we hypothesize that single label is not sufficient to…

计算与语言 · 计算机科学 2021-09-14 Shujian Zhang , Chengyue Gong , Eunsol Choi

Contrastive learning has significantly improved representation quality, enhancing knowledge transfer across tasks in continual learning (CL). However, catastrophic forgetting remains a key challenge, as contrastive based methods primarily…

计算机视觉与模式识别 · 计算机科学 2024-12-09 Trung-Anh Dang , Vincent Nguyen , Ngoc-Son Vu , Christel Vrain

In Multi-Label Learning (MLL), it is extremely challenging to accurately annotate every appearing object due to expensive costs and limited knowledge. When facing such a challenge, a more practical and cheaper alternative should be Single…

机器学习 · 计算机科学 2024-06-11 Xiang Li , Xinrui Wang , Songcan Chen

In scientific reasoning tasks, the veracity of the reasoning process is as critical as the final outcome. While Process Reward Models (PRMs) offer a solution to the coarse-grained supervision problems inherent in Outcome Reward Models…

计算与语言 · 计算机科学 2026-03-10 Chi-Min Chan , Ehsan Hajiramezanali , Xiner Li , Edward De Brouwer , Carl Edwards , Wei Xue , Sirui Han , Yike Guo , Gabriele Scalia

Falsely annotated samples, also known as noisy labels, can significantly harm the performance of deep learning models. Two main approaches for learning with noisy labels are global noise estimation and data filtering. Global noise…

机器学习 · 计算机科学 2025-07-31 Yuval Grinberg , Nimrod Harel , Jacob Goldberger , Ofir Lindenbaum

Recently proposed adversarial self-supervised learning methods usually require big batches and long training epochs to extract robust features, which will bring heavy computational overhead on platforms with limited resources. In order to…

计算机视觉与模式识别 · 计算机科学 2022-05-31 Cong Xu , Dan Li , Min Yang

Multimodal Prompt Learning (MPL) has emerged as a pivotal technique for adapting large-scale Visual Language Models (VLMs). However, current MPL methods are fundamentally limited by their optimization of a single, static point…

计算机视觉与模式识别 · 计算机科学 2025-12-01 Weiran Li , Yeqiang Liu , Yijie Wei , Mina Han , Xin Liu , Zhenbo Li

Music streaming services heavily rely on their recommendation engines to continuously provide content to their consumers. Sequential recommendation consequently has seen considerable attention in current literature, where state of the art…

信息检索 · 计算机科学 2024-01-22 Pavan Seshadri , Peter Knees

There is a rapidly-growing research interest in engaging users with multi-modal data for accurate user modeling on recommender systems. Existing multimedia recommenders have achieved substantial improvements by incorporating various…

信息检索 · 计算机科学 2023-05-04 Dong Yao , Shengyu Zhang , Zhou Zhao , Jieming Zhu , Wenqiao Zhang , Rui Zhang , Xiaofei He , Fei Wu