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Modern manufacturing relies heavily on fusion welding processes, including gas metal arc welding (GMAW). Despite significant advances in machine learning-based quality prediction, current models exhibit critical limitations when confronted…

Machine Learning · Computer Science 2026-02-18 Yannik Hahn , Jan Voets , Antonin Koenigsfeld , Hasan Tercan , Tobias Meisen

Ultrasonic metal welding (UMW) is widely used in industrial applications but is sensitive to tool wear, surface contamination, and material variability, which can lead to unexpected process faults and unsatisfactory weld quality.…

Machine Learning · Computer Science 2026-04-16 Ahmadreza Eslaminia , Kuan-Chieh Lu , Klara Nahrstedt , Chenhui Shao

Diffusion-based inverse algorithms have shown remarkable performance across various inverse problems, yet their reliance on numerous denoising steps incurs high computational costs. While recent developments of fast diffusion ODE solvers…

Computer Vision and Pattern Recognition · Computer Science 2025-10-22 Jiawei Zhang , Ziyuan Liu , Leon Yan , Gen Li , Yuantao Gu

Out-of-distribution (OOD) detection is essential for building reliable AI systems, as models that produce outputs for invalid inputs cannot be trusted. Although deep learning (DL) is often assumed to outperform traditional machine learning…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Jihyeon Baek , Seunghoon Lee , Gitaek Kwon , Doohyun Park

The welding seams visual inspection is still manually operated by humans in different companies, so the result of the test is still highly subjective and expensive. At present, the integration of deep learning methods for welds…

Computer Vision and Pattern Recognition · Computer Science 2021-10-08 Anass El Houd , Charbel El Hachem , Loic Painvin

Ultrasonic welding machines play a critical role in the lithium battery industry, facilitating the bonding of batteries with conductors. Ensuring high-quality welding is vital, making tool condition monitoring systems essential for…

Signal Processing · Electrical Eng. & Systems 2023-08-14 Beitong Tian , Kuan-Chieh Lu , Ahmadreza Eslaminia , Yaohui Wang , Chenhui Shao , Klara Nahrstedt

Widely present in the primary circuit of Nuclear Power Plants (NPP), Dissimilar Metal Welds (DMW) are inspected using Ultrasonic nondestructive Testing (UT) techniques to ensure the integrity of the structure and detect defects such as…

Computational Engineering, Finance, and Science · Computer Science 2024-03-21 Audrey Gardahaut , Hugues Lourme , Steve Mahaut , Masaki Nagai , Shan Lin

Unsupervised out-of-distribution detection (OOD) seeks to identify out-of-domain data by learning only from unlabeled in-domain data. We present a novel approach for this task - Lift, Map, Detect (LMD) - that leverages recent advancement in…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Zhenzhen Liu , Jin Peng Zhou , Yufan Wang , Kilian Q. Weinberger

In recent years, the deterioration of artificial materials used in structures has become a serious social issue, increasing the importance of inspections. Non-destructive testing is gaining increased demand due to its capability to inspect…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Yusaku Ando , Miya Nakajima , Takahiro Saitoh , Tsuyoshi Kato

Out-of-distribution (OOD) detection is a crucial part of deploying machine learning models safely. It has been extensively studied with a plethora of methods developed in the literature. This problem is tackled with an OOD score…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Jingqiu Zhou , Aojun Zhou , Hongsheng Li

Fueled by the rapid development of machine learning (ML) and greater access to cloud computing and graphics processing units (GPUs), various deep learning based models have been proposed for improving performance of ultrasonic guided wave…

Signal Processing · Electrical Eng. & Systems 2023-10-10 Pankhi Kashyap , Kajal Shivgan , Sheetal Patil , Ramana Raja B , Sagar Mahajan , Sauvik Banerjee , Siddharth Tallur

Masked diffusion models (MDMs) have achieved notable progress in modeling discrete data, while their potential in molecular generation remains underexplored. In this work, we explore their potential and introduce the surprising result that…

Machine Learning · Computer Science 2025-09-29 Hyunjin Seo , Taewon Kim , Sihyun Yu , SungSoo Ahn

Unsupervised out-of-distribution (OOD) detection aims to identify out-of-domain data by learning only from unlabeled In-Distribution (ID) training samples, which is crucial for developing a safe real-world machine learning system. Current…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Ying Yang , De Cheng , Chaowei Fang , Yubiao Wang , Changzhe Jiao , Lechao Cheng , Nannan Wang

Predict-then-Optimize (PTO) pipelines are widely employed in computing and networked systems, where Machine Learning (ML) models are used to predict critical contextual information for downstream decision-making tasks such as cloud LLM…

Machine Learning · Computer Science 2026-02-04 Jiaqi Wen , Lei Fan , Jianyi Yang

Clustering algorithms partition a dataset into groups of similar points. The clustering problem is very general, and different partitions of the same dataset could be considered correct and useful. To fully understand such data, it must be…

Machine Learning · Computer Science 2021-02-02 James M. Murphy , Sam L. Polk

The analysis of ultrasonic NDE data has traditionally been addressed by a trained operator manually interpreting data with the support of rudimentary automation tools. Recently, many demonstrations of deep learning (DL) techniques that…

Signal Processing · Electrical Eng. & Systems 2022-07-18 Sergio Cantero-Chinchilla , Paul D. Wilcox , Anthony J. Croxford

Open-world machine learning (ML) combines closed-world models trained on in-distribution data with out-of-distribution (OOD) detectors, which aim to detect and reject OOD inputs. Previous works on open-world ML systems usually fail to test…

Machine Learning · Computer Science 2020-07-10 Liwei Song , Vikash Sehwag , Arjun Nitin Bhagoji , Prateek Mittal

Universal Lesion Detection (ULD) in computed tomography (CT) plays an essential role in computer-aided diagnosis. Promising ULD results have been reported by anchor-based detection designs, but they have inherent drawbacks due to the use of…

Image and Video Processing · Electrical Eng. & Systems 2023-03-29 Peiang Zhao , Han Li , Ruiyang Jin , S. Kevin Zhou

Out-of-distribution (OOD) detection is essential to improve the reliability of machine learning models by detecting samples that do not belong to the training distribution. Detecting OOD samples effectively in certain tasks can pose a…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Divyanshu Mishra , He Zhao , Pramit Saha , Aris T. Papageorghiou , J. Alison Noble

The use of ultrasonic guided waves to probe the materials/structures for damage continues to increase in popularity for non-destructive evaluation (NDE) and structural health monitoring (SHM). The use of high-frequency waves such as these…

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