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Denoising diffusion models are a class of generative models which have recently achieved state-of-the-art results across many domains. Gradual noise is added to the data using a diffusion process, which transforms the data distribution into…

机器学习 · 统计学 2024-06-28 Francisco Vargas , Teodora Reu , Anna Kerekes , Michael M Bronstein

We present a simple yet effective method to train a named entity recognition (NER) model that operates on business telephone conversation transcripts that contain noise due to the nature of spoken conversation and artifacts of automatic…

计算与语言 · 计算机科学 2022-09-29 Xue-Yong Fu , Cheng Chen , Md Tahmid Rahman Laskar , Shashi Bhushan TN , Simon Corston-Oliver

Recently, the task of distantly supervised (DS) ultra-fine entity typing has received significant attention. However, DS data is noisy and often suffers from missing or wrong labeling issues resulting in low precision and low recall. This…

计算与语言 · 计算机科学 2022-10-19 Yue Zhang , Hongliang Fei , Ping Li

Diffusion models have found widespread adoption in various areas. However, their sampling process is slow because it requires hundreds to thousands of network evaluations to emulate a continuous process defined by differential equations. In…

机器学习 · 计算机科学 2023-07-25 Hongkai Zheng , Weili Nie , Arash Vahdat , Kamyar Azizzadenesheli , Anima Anandkumar

Nested named entity recognition (nested NER) is a fundamental task in natural language processing. Various span-based methods have been proposed to detect nested entities with span representations. However, span-based methods do not…

计算与语言 · 计算机科学 2022-09-07 Shuhui Wu , Yongliang Shen , Zeqi Tan , Weiming Lu

Inspired by recent advances in diffusion models, which are reminiscent of denoising autoencoders, we investigate whether they can acquire discriminative representations for classification via generative pre-training. This paper shows that…

计算机视觉与模式识别 · 计算机科学 2023-08-22 Weilai Xiang , Hongyu Yang , Di Huang , Yunhong Wang

Deep Neural Networks (DNNs) have recently shown state of the art performance on semantic segmentation tasks, however, they still suffer from problems of poor boundary localization and spatial fragmented predictions. The difficulties lie in…

计算机视觉与模式识别 · 计算机科学 2018-10-29 Peng Jiang , Fanglin Gu , Yunhai Wang , Changhe Tu , Baoquan Chen

Diffusion models have achieved remarkable success across a range of generative tasks. Recent efforts to enhance diffusion model architectures have reimagined them as a form of multi-task learning, where each task corresponds to a denoising…

计算机视觉与模式识别 · 计算机科学 2024-07-11 Byeongjun Park , Hyojun Go , Jin-Young Kim , Sangmin Woo , Seokil Ham , Changick Kim

Diffusion models have been recently studied as powerful generative inverse problem solvers, owing to their high quality reconstructions and the ease of combining existing iterative solvers. However, most works focus on solving simple linear…

机器学习 · 统计学 2025-10-06 Hyungjin Chung , Jeongsol Kim , Michael T. Mccann , Marc L. Klasky , Jong Chul Ye

Applying pre-trained generative denoising diffusion models (DDMs) for downstream tasks such as image semantic editing usually requires either fine-tuning DDMs or learning auxiliary editing networks in the existing literature. In this work,…

计算机视觉与模式识别 · 计算机科学 2023-10-19 Ye Zhu , Yu Wu , Zhiwei Deng , Olga Russakovsky , Yan Yan

Named entity recognition (NER) is a fundamental component in many applications, such as Web Search and Voice Assistants. Although deep neural networks greatly improve the performance of NER, due to the requirement of large amounts of…

计算与语言 · 计算机科学 2021-06-02 Shining Liang , Ming Gong , Jian Pei , Linjun Shou , Wanli Zuo , Xianglin Zuo , Daxin Jiang

Denoising diffusion models are a popular class of generative models providing state-of-the-art results in many domains. One adds gradually noise to data using a diffusion to transform the data distribution into a Gaussian distribution.…

机器学习 · 计算机科学 2023-08-21 Francisco Vargas , Will Grathwohl , Arnaud Doucet

Autoregressive models for text sometimes generate repetitive and low-quality output because errors accumulate during the steps of generation. This issue is often attributed to exposure bias - the difference between how a model is trained,…

计算与语言 · 计算机科学 2024-03-26 Yizhe Zhang , Jiatao Gu , Zhuofeng Wu , Shuangfei Zhai , Josh Susskind , Navdeep Jaitly

Learning from a large corpus of data, pre-trained models have achieved impressive progress nowadays. As popular generative pre-training, diffusion models capture both low-level visual knowledge and high-level semantic relations. In this…

计算机视觉与模式识别 · 计算机科学 2023-03-20 Chaofan Ma , Yuhuan Yang , Chen Ju , Fei Zhang , Jinxiang Liu , Yu Wang , Ya Zhang , Yanfeng Wang

Named Entity Recognition (NER) in Few-Shot setting is imperative for entity tagging in low resource domains. Existing approaches only learn class-specific semantic features and intermediate representations from source domains. This affects…

计算与语言 · 计算机科学 2022-03-29 Sarkar Snigdha Sarathi Das , Arzoo Katiyar , Rebecca J. Passonneau , Rui Zhang

State-of-the-art named entity recognition (NER) systems have been improving continuously using neural architectures over the past several years. However, many tasks including NER require large sets of annotated data to achieve such…

机器学习 · 计算机科学 2020-01-22 Parminder Bhatia , Kristjan Arumae , Busra Celikkaya

Recently, there has been an increased interest in the practical problem of learning multiple dense scene understanding tasks from partially annotated data, where each training sample is only labeled for a subset of the tasks. The missing of…

计算机视觉与模式识别 · 计算机科学 2024-03-25 Hanrong Ye , Dan Xu

The high performance of denoising diffusion models for image generation has paved the way for their application in unsupervised medical anomaly detection. As diffusion-based methods require a lot of GPU memory and have long sampling times,…

计算机视觉与模式识别 · 计算机科学 2024-03-19 Julia Wolleb , Florentin Bieder , Paul Friedrich , Peter Zhang , Alicia Durrer , Philippe C. Cattin

The creativity of diffusion models refers to their ability to generate highly realistic images that are different from their training data. Creativity is somewhat surprising since it is known that if the denoiser used in the diffusion model…

计算机视觉与模式识别 · 计算机科学 2026-05-29 Itamar Levine , Yair Weiss

The remarkable realism of images generated by diffusion models poses critical detection challenges. Current methods utilize reconstruction error as a discriminative feature, exploiting the observation that real images exhibit higher…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Jie Li , Yingying Feng , Chi Xie , Jie Hu , Lei Tan , Jiayi Ji