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The presence of label noise often misleads the training of deep neural networks. Departing from the recent literature which largely assumes the label noise rate is only determined by the true label class, the errors in human-annotated…

机器学习 · 计算机科学 2021-03-31 Zhaowei Zhu , Tongliang Liu , Yang Liu

In information theory, the link between continuous information and discrete information is established through well-known sampling theorems. Sampling theory explains, for example, how frequency-filtered music signals are reconstructible…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Achim Kempf

Text Summarization is recognised as one of the NLP downstream tasks and it has been extensively investigated in recent years. It can assist people with perceiving the information rapidly from the Internet, including news articles, social…

计算与语言 · 计算机科学 2022-12-08 Guan Wang , Weihua Li , Edmund Lai , Jianhua Jiang

Semantic segmentation in autonomous driving predominantly focuses on learning from large-scale data with a closed set of known classes without considering unknown objects. Motivated by safety reasons, we address the video class agnostic…

计算机视觉与模式识别 · 计算机科学 2021-05-12 Mennatullah Siam , Alex Kendall , Martin Jagersand

Unsupervised learning from continuous visual streams is a challenging problem that cannot be naturally and efficiently managed in the classic batch-mode setting of computation. The information stream must be carefully processed accordingly…

机器学习 · 计算机科学 2020-06-17 Matteo Tiezzi , Stefano Melacci , Alessandro Betti , Marco Maggini , Marco Gori

Modular object-centric representations are essential for *human-like reasoning* but are challenging to obtain under spatial ambiguities, *e.g. due to occlusions and view ambiguities*. However, addressing challenges presents both theoretical…

机器学习 · 计算机科学 2025-06-10 Avinash Kori , Francesca Toni , Ben Glocker

This paper contains a study of multivariate second order stochastic mappings indexed by an abstract set $\Lambda$ in close connection to their operator covariance functions. The characterizations of the normal Hilbert module or of Hilbert…

泛函分析 · 数学 2015-01-27 Pastorel Gaspar , Lorena Popa

Learning low-dimensional representations for entities and relations in knowledge graphs using contrastive estimation represents a scalable and effective method for inferring connectivity patterns. A crucial aspect of contrastive learning…

机器学习 · 计算机科学 2020-10-08 Kian Ahrabian , Aarash Feizi , Yasmin Salehi , William L. Hamilton , Avishek Joey Bose

It has long been a goal to efficiently compute and use second order information on a function ($f$) to assist in numerical approximations. Here it is shown how, using only basic physics and a numerical approximation, such information can be…

机器学习 · 计算机科学 2021-05-31 Michael F. Zimmer

Deep networks have shown remarkable results in the task of object detection. However, their performance suffers critical drops when they are subsequently trained on novel classes without any sample from the base classes originally used to…

计算机视觉与模式识别 · 计算机科学 2021-10-29 Na Dong , Yongqiang Zhang , Mingli Ding , Gim Hee Lee

Contrastive learning is an approach to representation learning that utilizes naturally occurring similar and dissimilar pairs of data points to find useful embeddings of data. In the context of document classification under topic modeling…

机器学习 · 计算机科学 2020-03-05 Christopher Tosh , Akshay Krishnamurthy , Daniel Hsu

Training dense passage representations via contrastive learning has been shown effective for Open-Domain Passage Retrieval (ODPR). Existing studies focus on further optimizing by improving negative sampling strategy or extra pretraining.…

计算与语言 · 计算机科学 2022-03-08 Bohong Wu , Zhuosheng Zhang , Jinyuan Wang , Hai Zhao

Weakly supervised semantic segmentation receives much research attention since it alleviates the need to obtain a large amount of dense pixel-wise ground-truth annotations for the training images. Compared with other forms of weak…

计算机视觉与模式识别 · 计算机科学 2018-03-08 Tianyi Zhang , Guosheng Lin , Jianfei Cai , Tong Shen , Chunhua Shen , Alex C. Kot

World models trained by contrastive learning are a compelling alternative to autoencoder-based world models, which learn by reconstructing pixel states. In this paper, we describe three cases where small changes in how we sample negative…

机器学习 · 计算机科学 2021-07-27 Ondrej Biza , Elise van der Pol , Thomas Kipf

Humans judge the similarity of two objects not just based on their visual appearance but also based on their semantic relatedness. However, it remains unclear how humans learn about semantic relationships between objects and categories. One…

计算机视觉与模式识别 · 计算机科学 2024-05-09 Arthur Aubret , Timothy Schaumlöffel , Gemma Roig , Jochen Triesch

Graph-level contrastive learning, aiming to learn the representations for each graph by contrasting two augmented graphs, has attracted considerable attention. Previous studies usually simply assume that a graph and its augmented graph as a…

人工智能 · 计算机科学 2024-04-15 Yanbei Liu , Yu Zhao , Xiao Wang , Lei Geng , Zhitao Xiao

Object localisation, in the context of regular images, often depicts objects like people or cars. In these images, there is typically a relatively small number of objects per class, which usually is manageable to annotate. However, outside…

机器学习 · 计算机科学 2021-08-24 Andreas Panteli , Jonas Teuwen , Hugo Horlings , Efstratios Gavves

Joint-event-extraction, which extracts structural information (i.e., entities or triggers of events) from unstructured real-world corpora, has attracted more and more research attention in natural language processing. Most existing works do…

计算与语言 · 计算机科学 2020-10-15 Yue Wang , Zhuo Xu , Lu Bai , Yao Wan , Lixin Cui , Qian Zhao , Edwin R. Hancock , Philip S. Yu

We propose an importance sampling method for tractable and efficient estimation of counterfactual expressions in general settings, named Exogenous Matching. By minimizing a common upper bound of counterfactual estimators, we transform the…

机器学习 · 计算机科学 2025-02-14 Yikang Chen , Dehui Du , Lili Tian

Objects within a category are often similar in their shape and usage. When we---as humans---want to grasp something, we transfer our knowledge from past experiences and adapt it to novel objects. In this paper, we propose a new approach for…

机器人学 · 计算机科学 2018-09-17 Diego Rodriguez , Sven Behnke