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General-purpose open-domain dense retrieval systems are usually trained with a large, eclectic mix of corpora and search tasks. How should these diverse corpora and tasks be sampled for training? Conventional approaches sample them…

信息检索 · 计算机科学 2026-01-30 Meet Doshi , Vishwajeet Kumar , Yulong Li , Jaydeep Sen

Understanding systems by forward and inverse modeling is a recurrent topic of research in many domains of science and engineering. In this context, Monte Carlo methods have been widely used as powerful tools for numerical inference and…

统计计算 · 统计学 2022-02-14 F. Llorente , L. Martino , D. Delgado , G. Camps-Valls

We propose an embarrassingly simple method -- instance-aware repeat factor sampling (IRFS) to address the problem of imbalanced data in long-tailed object detection. Imbalanced datasets in real-world object detection often suffer from a…

计算机视觉与模式识别 · 计算机科学 2023-11-14 Burhaneddin Yaman , Tanvir Mahmud , Chun-Hao Liu

With recent advances in distantly supervised (DS) relation extraction (RE), considerable attention is attracted to leverage multi-instance learning (MIL) to distill high-quality supervision from the noisy DS. Here, we go beyond label noise…

计算与语言 · 计算机科学 2021-06-22 Tao Chen , Haochen Shi , Liyuan Liu , Siliang Tang , Jian Shao , Zhigang Chen , Yueting Zhuang

Distant supervision significantly reduces human efforts in building training data for many classification tasks. While promising, this technique often introduces noise to the generated training data, which can severely affect the model…

计算与语言 · 计算机科学 2018-05-16 Bingfeng Luo , Yansong Feng , Zheng Wang , Zhanxing Zhu , Songfang Huang , Rui Yan , Dongyan Zhao

To reduce human annotations for relation extraction (RE) tasks, distantly supervised approaches have been proposed, while struggling with low performance. In this work, we propose a novel DSRE-NLI framework, which considers both distant…

计算与语言 · 计算机科学 2022-08-02 Kang Zhou , Qiao Qiao , Yuepei Li , Qi Li

Existing relation classification methods that rely on distant supervision assume that a bag of sentences mentioning an entity pair are all describing a relation for the entity pair. Such methods, performing classification at the bag level,…

信息检索 · 计算机科学 2018-08-27 Jun Feng , Minlie Huang , Li Zhao , Yang Yang , Xiaoyan Zhu

Relation extraction is the problem of classifying the relationship between two entities in a given sentence. Distant Supervision (DS) is a popular technique for developing relation extractors starting with limited supervision. We note that…

计算与语言 · 计算机科学 2018-04-20 Sharmistha Jat , Siddhesh Khandelwal , Partha Talukdar

Contrastive learning, commonly applied in large-scale multimodal models, often relies on data from diverse and often unreliable sources, which can include misaligned or mislabeled text-image pairs. This frequently leads to robustness issues…

机器学习 · 计算机科学 2025-02-04 Lijie Hu , Chenyang Ren , Huanyi Xie , Khouloud Saadi , Shu Yang , Zhen Tan , Jingfeng Zhang , Di Wang

Influence functions serve as crucial tools for assessing sample influence in model interpretation, subset training set selection, noisy label detection, and more. By employing the first-order Taylor extension, influence functions can…

机器学习 · 计算机科学 2026-03-27 Ziao Yang , Han Yue , Jian Chen , Hongfu Liu

In recent years there is a surge of interest in applying distant supervision (DS) to automatically generate training data for relation extraction (RE). In this paper, we study the problem what limits the performance of DS-trained neural…

计算与语言 · 计算机科学 2019-09-11 Qinyuan Ye , Liyuan Liu , Maosen Zhang , Xiang Ren

Multiple instance learning (MIL) has become the standard learning paradigm for distantly supervised relation extraction (DSRE). However, due to relation extraction being performed at bag level, MIL has significant hardware requirements for…

计算与语言 · 计算机科学 2021-04-16 Mehrdad Nasser , Mohamad Bagher Sajadi , Behrouz Minaei-Bidgoli

Deep neural networks (DNNs) are notorious for their vulnerability to adversarial attacks, which are small perturbations added to their input images to mislead their prediction. Detection of adversarial examples is, therefore, a fundamental…

机器学习 · 计算机科学 2020-03-20 Gilad Cohen , Guillermo Sapiro , Raja Giryes

In a typical supervised machine learning setting, the predictions on all test instances are based on a common subset of features discovered during model training. However, using a different subset of features that is most informative for…

机器学习 · 计算机科学 2021-06-10 Yasitha Warahena Liyanage , Daphney-Stavroula Zois , Charalampos Chelmis

Imitation learning (IL) enables agents to mimic expert behavior without reward signals but faces challenges in cross-domain scenarios with high-dimensional, noisy, and incomplete visual observations. To address this, we propose…

计算机视觉与模式识别 · 计算机科学 2025-02-17 Minung Kim , Kawon Lee , Jungmo Kim , Sungho Choi , Seungyul Han

Imitation learning (IL) is a framework that learns to imitate expert behavior from demonstrations. Recently, IL shows promising results on high dimensional and control tasks. However, IL typically suffers from sample inefficiency in terms…

机器学习 · 计算机科学 2021-11-24 Lihua Zhang

Distant supervision (DS) is a promising approach for relation extraction but often suffers from the noisy label problem. Traditional DS methods usually represent an entity pair as a bag of sentences and denoise labels using multi-instance…

计算与语言 · 计算机科学 2020-12-10 Lingyong Yan , Xianpei Han , Le Sun , Fangchao Liu , Ning Bian

Although reinforcement learning methods offer a powerful framework for automatic skill acquisition, for practical learning-based control problems in domains such as robotics, imitation learning often provides a more convenient and…

人工智能 · 计算机科学 2024-03-20 Jianlan Luo , Perry Dong , Yuexiang Zhai , Yi Ma , Sergey Levine

Distant supervision (DS) has been widely used to automatically construct (noisy) labeled data for relation extraction (RE). Given two entities, distant supervision exploits sentences that directly mention them for predicting their semantic…

计算与语言 · 计算机科学 2020-06-29 Xiang Deng , Huan Sun

Distantly supervised models are very popular for relation extraction since we can obtain a large amount of training data using the distant supervision method without human annotation. In distant supervision, a sentence is considered as a…

计算与语言 · 计算机科学 2021-08-24 Tapas Nayak , Navonil Majumder , Soujanya Poria