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Large annotated datasets are vital for training segmentation models, but pixel-level labeling is time-consuming, error-prone, and often requires scarce expert annotators, especially in medical imaging. In contrast, coarse annotations are…

计算机视觉与模式识别 · 计算机科学 2025-08-27 Le Zhang , Fuping Wu , Arun Thirunavukarasu , Kevin Bronik , Thomas Nichols , Bartlomiej W. Papiez

A large amount of information in today's world is now stored in knowledge bases. Named Entity Recognition (NER) is a process of extracting, disambiguation, and linking an entity from raw text to insightful and structured knowledge bases.…

计算与语言 · 计算机科学 2024-11-11 Monica Munnangi

Named Entity Recognition (NER) is an essential precursor task for many natural language applications, such as relation extraction or event extraction. Much of the NER research has been done on datasets with few classes of entity types (e.g.…

计算与语言 · 计算机科学 2020-09-17 Parul Awasthy , Taesun Moon , Jian Ni , Radu Florian

We propose a supervised anomaly detection method based on neural density estimators, where the negative log likelihood is used for the anomaly score. Density estimators have been widely used for unsupervised anomaly detection. By the recent…

机器学习 · 统计学 2019-04-15 Tomoharu Iwata , Yuki Yamanaka

Sequential recommendation models are primarily optimized to distinguish positive samples from negative ones during training in which negative sampling serves as an essential component in learning the evolving user preferences through…

信息检索 · 计算机科学 2022-08-09 Xiaoyang Liu , Chong Liu , Pinzheng Wang , Rongqin Zheng , Lixin Zhang , Leyu Lin , Zhijun Chen , Liangliang Fu

Deep Neural Networks (DNN) are core components for classification and regression tasks of many software systems. Companies incur in high costs for testing DNN with datasets representative of the inputs expected in operation, as these need…

软件工程 · 计算机科学 2024-03-29 Antonio Guerriero , Roberto Pietrantuono , Stefano Russo

Deep neural network models have recently achieved state-of-the-art performance gains in a variety of natural language processing (NLP) tasks (Young, Hazarika, Poria, & Cambria, 2017). However, these gains rely on the availability of large…

计算与语言 · 计算机科学 2018-11-15 Maximilian Hofer , Andrey Kormilitzin , Paul Goldberg , Alejo Nevado-Holgado

Sample selection is a prevalent method in learning with noisy labels, where small-loss data are typically considered as correctly labeled data. However, this method may not effectively identify clean hard examples with large losses, which…

机器学习 · 计算机科学 2023-08-29 Suqin Yuan , Lei Feng , Tongliang Liu

Weakly supervised learning is a popular approach for training machine learning models in low-resource settings. Instead of requesting high-quality yet costly human annotations, it allows training models with noisy annotations obtained from…

计算与语言 · 计算机科学 2023-09-19 Dawei Zhu , Xiaoyu Shen , Marius Mosbach , Andreas Stephan , Dietrich Klakow

In the field of Natural Language Processing (NLP), Named Entity Recognition (NER) is recognized as a critical technology, employed across a wide array of applications. Traditional methodologies for annotating datasets for NER models are…

计算与语言 · 计算机科学 2025-01-03 Yuji Naraki , Ryosuke Yamaki , Yoshikazu Ikeda , Takafumi Horie , Kotaro Yoshida , Ryotaro Shimizu , Hiroki Naganuma

While training on samples drawn from independent and identical distribution has been a de facto paradigm for optimizing image classification networks, humans learn new concepts in an easy-to-hard manner and on the selected examples…

计算机视觉与模式识别 · 计算机科学 2020-10-16 Bowen Cheng , Yunchao Wei , Jiahui Yu , Shiyu Chang , Jinjun Xiong , Wen-Mei Hwu , Thomas S. Huang , Humphrey Shi

Standard deep neural networks (DNNs) are commonly trained in an end-to-end fashion for specific tasks such as object recognition, face identification, or character recognition, among many examples. This specificity often leads to…

计算机视觉与模式识别 · 计算机科学 2020-07-14 Raphaël Achddou , J. Matias di Martino , Guillermo Sapiro

Named entity recognition (NER) is a foundational technology for information extraction. This paper presents a flexible NER framework compatible with different languages and domains. Inspired by the idea of distant supervision (DS), this…

计算与语言 · 计算机科学 2019-08-15 Hongyin Zhu , Wenpeng Hu , Yi Zeng

For several purposes in Natural Language Processing (NLP), such as Information Extraction, Sentiment Analysis or Chatbot, Named Entity Recognition (NER) holds an important role as it helps to determine and categorize entities in text into…

计算与语言 · 计算机科学 2020-03-24 Thong Nguyen , Duy Nguyen , Pramod Rao

The hindering problem in facial expression recognition (FER) is the presence of inaccurate annotations referred to as noisy annotations in the datasets. These noisy annotations are present in the datasets inherently because the labeling is…

计算机视觉与模式识别 · 计算机科学 2023-05-04 Darshan Gera , Badveeti Naveen Siva Kumar , Bobbili Veerendra Raj Kumar , S Balasubramanian

Deep Neural Networks (DNNs) have improved the accuracy of classification problems in lots of applications. One of the challenges in training a DNN is its need to be fed by an enriched dataset to increase its accuracy and avoid it suffering…

机器学习 · 计算机科学 2020-08-25 Iman Saberi , Fathiyeh Faghih

Most approaches to dense anomaly detection rely on generative modeling or on discriminative methods that train with negative data. We consider a recent hybrid method that optimizes the same shared representation according to cross-entropy…

计算机视觉与模式识别 · 计算机科学 2023-05-25 Anja Delić , Matej Grcić , Siniša Šegvić

Large training datasets almost always contain examples with inaccurate or incorrect labels. Deep Neural Networks (DNNs) tend to overfit training label noise, resulting in poorer model performance in practice. To address this problem, we…

计算机视觉与模式识别 · 计算机科学 2022-03-01 Chen Gong , Kong Bin , Eric J. Seibel , Xin Wang , Youbing Yin , Qi Song

Named Entity Recognition (NER) from social media posts is a challenging task. User generated content that forms the nature of social media, is noisy and contains grammatical and linguistic errors. This noisy content makes it much harder for…

计算与语言 · 计算机科学 2021-09-16 Meysam Asgari-Chenaghlu , M. Reza Feizi-Derakhshi , Leili Farzinvash , M. A. Balafar , Cina Motamed

The performance of deep neural networks scales with dataset size and label quality, rendering the efficient mitigation of low-quality data annotations crucial for building robust and cost-effective systems. Existing strategies to address…

计算机视觉与模式识别 · 计算机科学 2025-04-15 Francesco Di Salvo , Sebastian Doerrich , Ines Rieger , Christian Ledig