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Traditional supervised learning makes the closed-world assumption that the classes appeared in the test data must have appeared in training. This also applies to text learning or text classification. As learning is used increasingly in…

计算与语言 · 计算机科学 2017-09-27 Lei Shu , Hu Xu , Bing Liu

Multiple instance learning (MIL) is a variation of traditional supervised learning problems where data (referred to as bags) are composed of sub-elements (referred to as instances) and only bag labels are available. MIL has a variety of…

机器学习 · 计算机科学 2018-05-02 Han Bao , Tomoya Sakai , Issei Sato , Masashi Sugiyama

As one of the most effective self-supervised representation learning methods, contrastive learning (CL) relies on multiple negative pairs to contrast against each positive pair. In the standard practice of contrastive learning, data…

机器学习 · 计算机科学 2024-01-18 Lu Wang , Chao Du , Pu Zhao , Chuan Luo , Zhangchi Zhu , Bo Qiao , Wei Zhang , Qingwei Lin , Saravan Rajmohan , Dongmei Zhang , Qi Zhang

Given an existing system learned from previous source domains, it is desirable to adapt the system to new domains without accessing and forgetting all the previous domains in some applications. This problem is known as domain expansion.…

计算机视觉与模式识别 · 计算机科学 2020-05-27 Jing Zhang , Wanqing Li , Lu sheng , Chang Tang , Philip Ogunbona

Deep learning based approaches have achieved significant progresses in different tasks like classification, detection, segmentation, and so on. Ensemble learning is widely known to further improve performance by combining multiple…

计算机视觉与模式识别 · 计算机科学 2019-05-17 Danlu Chen , Xu-Yao Zhang , Wei Zhang , Yao Lu , Xiuli Li , Tao Mei

In this paper, we propose Diffusion Domain Expansion (DDE), a method that efficiently extends pre-trained diffusion models to generate larger objects and handle more complex conditioning beyond their original capabilities. Our method…

机器学习 · 计算机科学 2026-05-25 Egor Lifar , Semyon Savkin , Timur Garipov , Shangyuan Tong , Tommi Jaakkola

Positive-Unlabelled (PU) learning is a growing field of machine learning that aims to learn classifiers from data consisting of labelled positive and unlabelled instances, which can be in reality positive or negative, but whose label is…

机器学习 · 计算机科学 2024-01-15 Jack D. Saunders , Alex A. Freitas

Successful Artificial Intelligence systems often require numerous labeled data to extract information from document images. In this paper, we investigate the problem of improving the performance of Artificial Intelligence systems in…

信息检索 · 计算机科学 2022-09-27 Bao-Sinh Nguyen , Dung Tien Le , Hieu M. Vu , Tuan Anh D. Nguyen , Minh-Tien Nguyen , Hung Le

In this paper, we address the challenges of online Continual Learning (CL) by introducing a density distribution-based learning framework. CL, especially the Class Incremental Learning, enables adaptation to new test distributions while…

机器学习 · 计算机科学 2023-11-27 Shilin Zhang , Jiahui Wang

In recent years, the use of large language models (LLMs) for text classification has attracted widespread attention. Despite this, the classification accuracy of LLMs has not yet universally surpassed that of smaller models. LLMs can…

计算与语言 · 计算机科学 2024-12-11 Min Zeng , Caiquan Liu , Shiqi Zhang , Li Xie , Chen Sang , Xiaoxin Chen

Insightful findings in political science often require researchers to analyze documents of a certain subject or type, yet these documents are usually contained in large corpora that do not distinguish between pertinent and non-pertinent…

计算与语言 · 计算机科学 2019-10-29 Shrey Desai , Barea Sinno , Alex Rosenfeld , Junyi Jessy Li

Recent progress in deterministic prompt learning has become a promising alternative to various downstream vision tasks, enabling models to learn powerful visual representations with the help of pre-trained vision-language models. However,…

计算机视觉与模式识别 · 计算机科学 2023-04-04 Hyeongjun Kwon , Taeyong Song , Somi Jeong , Jin Kim , Jinhyun Jang , Kwanghoon Sohn

We consider the problem of discovering novel object categories in an image collection. While these images are unlabelled, we also assume prior knowledge of related but different image classes. We use such prior knowledge to reduce the…

计算机视觉与模式识别 · 计算机科学 2019-08-28 Kai Han , Andrea Vedaldi , Andrew Zisserman

Positive-Unlabeled (PU) learning presents unique challenges due to the lack of explicitly labeled negative samples, particularly in high-stakes domains such as fraud detection and medical diagnosis. To address data scarcity and privacy…

机器学习 · 统计学 2025-11-17 Jialei Liu , Jun Liao , Kuangnan Fang

Entity Set Expansion (ESE) is a promising task which aims to expand entities of the target semantic class described by a small seed entity set. Various NLP and IR applications will benefit from ESE due to its ability to discover knowledge.…

计算与语言 · 计算机科学 2022-04-26 Yinghui Li , Yangning Li , Yuxin He , Tianyu Yu , Ying Shen , Hai-Tao Zheng

In real-world clinical settings, data distributions evolve over time, with a continuous influx of new, limited disease cases. Therefore, class incremental learning is of great significance, i.e., deep learning models are required to learn…

计算机视觉与模式识别 · 计算机科学 2024-09-13 Yifei Yao , Hanrong Zhang

Feature selection is essential for efficient data mining and sometimes encounters the positive-unlabeled (PU) learning scenario, where only a few positive labels are available, while most data remains unlabeled. In certain real-world PU…

机器学习 · 计算机科学 2025-04-18 Motonobu Uchikoshi , Youhei Akimoto

Short text classification, as a research subtopic in natural language processing, is more challenging due to its semantic sparsity and insufficient labeled samples in practical scenarios. We propose a novel model named MI-DELIGHT for short…

计算与语言 · 计算机科学 2025-01-17 Yonghao Liu , Mengyu Li , Wei Pang , Fausto Giunchiglia , Lan Huang , Xiaoyue Feng , Renchu Guan

When learning from positive and unlabelled data, it is a strong assumption that the positive observations are randomly sampled from the distribution of $X$ conditional on $Y = 1$, where X stands for the feature and Y the label. Most…

机器学习 · 计算机科学 2020-03-04 Fengxiang He , Tongliang Liu , Geoffrey I Webb , Dacheng Tao

Automated code vulnerability detection has gained increasing attention in recent years. The deep learning (DL)-based methods, which implicitly learn vulnerable code patterns, have proven effective in vulnerability detection. The performance…

软件工程 · 计算机科学 2023-08-22 Xin-Cheng Wen , Xinchen Wang , Cuiyun Gao , Shaohua Wang , Yang Liu , Zhaoquan Gu