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Unsupervised machine learning offers significant opportunities for extracting knowledge from unlabeled data sets and for achieving maximum machine learning performance. This paper demonstrates how to construct, use, and evaluate a high…

材料科学 · 物理学 2021-04-13 Ryan Cohn , Elizabeth Holm

In recent years, Artificial Intelligence techniques have proved to be very successful when applied to problems in physical sciences. Here we apply an unsupervised Machine Learning (ML) algorithm called Principal Component Analysis (PCA) as…

Humans are able to categorize images very efficiently, in particular to detect the presence of an animal very quickly. Recently, deep learning algorithms based on convolutional neural networks (CNNs) have achieved higher than human accuracy…

神经元与认知 · 定量生物学 2023-06-01 Jean-Nicolas Jérémie , Laurent U Perrinet

To search for optical counterparts to gravitational waves, it is crucial to develop an efficient follow-up method that allows for both a quick telescopic scan of the event localization region and search through the resulting image data for…

天体物理仪器与方法 · 物理学 2021-08-25 Katarzyna Wardęga , Adam Zadrożny , Martin Beroiz , Richard Camuccio , Mario C. Díaz

In several application domains, high-dimensional observations are collected and then analysed in search for naturally occurring data clusters which might provide further insights about the nature of the problem. In this paper we describe a…

机器学习 · 统计学 2012-03-07 Brian McWilliams , Giovanni Montana

We consider the problem of person search in unconstrained scene images. Existing methods usually focus on improving the person detection accuracy to mitigate negative effects imposed by misalignment, mis-detections, and false alarms…

计算机视觉与模式识别 · 计算机科学 2018-07-24 Xu Lan , Xiatian Zhu , Shaogang Gong

In this modern era of overpopulation disease prediction is a crucial step in diagnosing various diseases at an early stage. With the advancement of various machine learning algorithms, the prediction has become quite easy. However, the…

机器学习 · 计算机科学 2022-03-23 Ishu Gupta , Vartika Sharma , Sizman Kaur , Ashutosh Kumar Singh

Automated techniques have been developed to automate the process of classification of objects or their analysis. The large datasets provided by upcoming spectroscopic surveys with dedicated telescopes urges scientists to use these automated…

天体物理学 · 物理学 2009-06-23 Mahdi Bazarghan , Ranjan Gupta

Several applications require the super-resolution of noisy images and the preservation of geometrical and texture features. State-of-the-art super-resolution methods do not account for noise and generally enhance the output image's…

图像与视频处理 · 电气工程与系统科学 2023-11-07 Simone Cammarasana , Giuseppe Patanè

We present a comparison of several Difference Image Analysis (DIA) techniques, in combination with Machine Learning (ML) algorithms, applied to the identification of optical transients associated with gravitational wave events. Each…

Upcoming synoptic surveys are set to generate an unprecedented amount of data. This requires an automatic framework that can quickly and efficiently provide classification labels for several new object classification challenges. Using data…

天体物理仪器与方法 · 物理学 2019-07-31 Zafiirah Hosenie , Robert Lyon , Benjamin Stappers , Arrykrishna Mootoovaloo

We apply instance-based machine learning in the form of a k-nearest neighbor algorithm to the task of estimating photometric redshifts for 55,746 objects spectroscopically classified as quasars in the Fifth Data Release of the Sloan Digital…

We discuss whether modern machine learning methods can be used to characterize the physical nature of the large number of objects sampled by the modern multi-band digital surveys. In particular, we applied the MLPQNA (Multi Layer Perceptron…

星系天体物理 · 物理学 2015-06-17 Massimo Brescia , Stefano Cavuoti , Giuseppe Longo

Accurate classification of transients obtained from spectroscopic data are important to understand their nature and discover new classes of astronomical objects. For supernovae (SNe), SNID, NGSF (a Python version of SuperFit), and DASH are…

Purpose: To systematically investigate the influence of various data consistency layers, (semi-)supervised learning and ensembling strategies, defined in a $\Sigma$-net, for accelerated parallel MR image reconstruction using deep learning.…

图像与视频处理 · 电气工程与系统科学 2019-12-20 Kerstin Hammernik , Jo Schlemper , Chen Qin , Jinming Duan , Ronald M. Summers , Daniel Rueckert

Wide field small aperture telescopes are working horses for fast sky surveying. Transient discovery is one of their main tasks. Classification of candidate transient images between real sources and artifacts with high accuracy is an…

天体物理仪器与方法 · 物理学 2019-07-17 Peng Jia , Yifei Zhao , Gang Xue , Dongmei Cai

Large-scale surveys make huge amounts of photometric data available. Because of the sheer amount of objects, spectral data cannot be obtained for all of them. Therefore it is important to devise techniques for reliably estimating physical…

天体物理仪器与方法 · 物理学 2017-03-22 Kristoffer Stensbo-Smidt , Fabian Gieseke , Christian Igel , Andrew Zirm , Kim Steenstrup Pedersen

Real-time analysis and classification of observational data collected within synoptic sky surveys is a huge challenge due to constant growth of data volumes. Machine learning techniques are often applied in order to perform this task…

天体物理仪器与方法 · 物理学 2016-01-26 Jakub Klencki , Łukasz Wyrzykowski , Zuzanna Kostrzewa-Rutkowska , Andrzej Udalski

Recent advancements in Artificial intelligence, especially deep learning, has changed many fields irreversibly by introducing state of the art methods for automation. Construction monitoring has not been an exception; as a part of…

Monitoring biodiversity is paramount to manage and protect natural resources. Collecting images of organisms over large temporal or spatial scales is a promising practice to monitor the biodiversity of natural ecosystems, providing large…

计算机视觉与模式识别 · 计算机科学 2023-02-07 S. Kyathanahally , T. Hardeman , M. Reyes , E. Merz , T. Bulas , P. Brun , F. Pomati , M. Baity-Jesi