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Domain shift is a significant challenge in machine learning, particularly in medical applications where data distributions differ across institutions due to variations in data collection practices, equipment, and procedures. This can…

机器学习 · 计算机科学 2025-06-30 Takumi Okuo , Shinnosuke Matsuo , Shota Harada , Kiyohito Tanaka , Ryoma Bise

The universality of deep neural networks across different modalities and their generalization capabilities to unseen domains play an essential role in medical image segmentation. The recent segment anything model (SAM) has demonstrated…

图像与视频处理 · 电气工程与系统科学 2025-07-02 Qing Xu , Jiaxuan Li , Xiangjian He , Chenxin Li , Fiseha B. Tesem , Wenting Duan , Zhen Chen , Rong Qu , Jonathan M. Garibaldi , Chang Wen Chen

We present a method to segment MRI scans of the human brain into ischemic stroke lesion and normal tissues. We propose a neural network architecture in the form of a standard encoder-decoder where predictions are guided by a spatial…

图像与视频处理 · 电气工程与系统科学 2021-09-21 Alex Wong , Allison Chen , Yangchao Wu , Safa Cicek , Alexandre Tiard , Byung-Woo Hong , Stefano Soatto

Computationally intensive decoding procedures--including search, reranking, and self-critique--can improve the quality of language model (LM) outputs in problems spanning code generation, numerical reasoning, and dialog. Existing work…

机器学习 · 计算机科学 2024-10-08 Mehul Damani , Idan Shenfeld , Andi Peng , Andreea Bobu , Jacob Andreas

Due to the lack of paired samples and the low signal-to-noise ratio of functional MRI (fMRI) signals, reconstructing perceived natural images or decoding their semantic contents from fMRI data are challenging tasks. In this work, we…

计算机视觉与模式识别 · 计算机科学 2023-05-16 Yulong Liu , Yongqiang Ma , Wei Zhou , Guibo Zhu , Nanning Zheng

Adapting general large language models (LLMs) to specialized domains presents great challenges due to varied data distributions. This adaptation typically requires continual pre-training on massive domain-specific corpora to facilitate…

计算与语言 · 计算机科学 2024-07-16 Jinhao Jiang , Junyi Li , Wayne Xin Zhao , Yang Song , Tao Zhang , Ji-Rong Wen

Recent works in image captioning have shown very promising raw performance. However, we realize that most of these encoder-decoder style networks with attention do not scale naturally to large vocabulary size, making them difficult to be…

计算机视觉与模式识别 · 计算机科学 2019-06-13 Jia Huei Tan , Chee Seng Chan , Joon Huang Chuah

It has been proposed that populations of neurons process information in terms of probability density functions (PDFs) of analog variables. Such analog variables range, for example, from target luminance and depth on the sensory interface to…

无序系统与神经网络 · 物理学 2007-05-23 M. J. Barber , J. W. Clark , C. H. Anderson

Segmentation of microscopy images constitutes an ill-posed inverse problem due to measurement noise, weak object boundaries, and limited labeled data. Although deep neural networks provide flexible nonparametric estimators, unconstrained…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Seema K. Poudel , Sunny K. Khadka

Neural networks have proven successful at learning from complex data distributions by acting as universal function approximators. However, they are often overconfident in their predictions, which leads to inaccurate and miscalibrated…

机器学习 · 计算机科学 2021-02-23 Jeffrey Willette , Juho Lee , Sung Ju Hwang

Accurate segmentation of infant brain MRI is critical for studying early neurodevelopment and diagnosing neurological disorders. Yet, it remains a fundamental challenge due to continuously evolving anatomy of the subjects, motion artifacts,…

图像与视频处理 · 电气工程与系统科学 2025-10-13 Alemu Sisay Nigru , Michele Svanera , Austin Dibble , Connor Dalby , Mattia Savardi , Sergio Benini

The increasing demand for larger and higher fidelity simulations has made Adaptive Mesh Refinement (AMR) and unstructured mesh techniques essential to focus compute effort and memory cost on just the areas of interest in the simulation…

图形学 · 计算机科学 2025-01-23 Xuan Huang , Will Usher , Valerio Pascucci

Vision-language models (VLMs) such as CLIP are trained via contrastive learning between text and image pairs, resulting in aligned image and text embeddings that are useful for many downstream tasks. A notable drawback of CLIP, however, is…

机器学习 · 计算机科学 2025-07-08 Dylan Sam , Devin Willmott , Joao D. Semedo , J. Zico Kolter

The problem of end-to-end learning of a communication system using an autoencoder -- consisting of an encoder, channel, and decoder modeled using neural networks -- has recently been shown to be an effective approach. A challenge faced in…

Domain adaptation for semantic segmentation aims to improve the model performance in the presence of a distribution shift between source and target domain. Leveraging the supervision from auxiliary tasks~(such as depth estimation) has the…

计算机视觉与模式识别 · 计算机科学 2021-08-25 Qin Wang , Dengxin Dai , Lukas Hoyer , Luc Van Gool , Olga Fink

Domain adaptation is a popular paradigm in modern machine learning which aims at tackling the problem of divergence (or shift) between the labeled training and validation datasets (source domain) and a potentially large unlabeled dataset…

Unsupervised domain adaptation aims to generalize the supervised model trained on a source domain to an unlabeled target domain. Marginal distribution alignment of feature spaces is widely used to reduce the domain discrepancy between the…

计算机视觉与模式识别 · 计算机科学 2022-05-04 Pengfei Ge , Chuan-Xian Ren , Dao-Qing Dai , Hong Yan

The performance of algebraic soft-decision decoding of Reed-Solomon codes using bit-level soft information is investigated. Optimal multiplicity assignment strategies of algebraic soft-decision decoding with infinite cost are first studied…

信息论 · 计算机科学 2008-08-05 Jing Jiang , Krishna R. Narayanan

Minimum Bayesian Risk Decoding (MBR) emerges as a promising decoding algorithm in Neural Machine Translation. However, MBR performs poorly with label smoothing, which is surprising as label smoothing provides decent improvement with beam…

计算与语言 · 计算机科学 2023-05-19 Jianhao Yan , Jin Xu , Fandong Meng , Jie Zhou , Yue Zhang

Demographic attributes such as age, sex, and race can be predicted from medical images, raising concerns about bias in clinical AI systems. In brain MRI, this signal may arise from anatomical variation, acquisition-dependent contrast…

计算机视觉与模式识别 · 计算机科学 2026-03-05 Mehmet Yigit Avci , Akshit Achara , Andrew King , Jorge Cardoso