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Multi-band images of galaxies reveal a huge amount of information about their morphology and structure. However, inferring properties of the underlying stellar populations such as age, metallicity or kinematics from those images is…

星系天体物理 · 物理学 2021-11-03 Tobias Buck , Steffen Wolf

Estimating the geographical range of a species from sparse observations is a challenging and important geospatial prediction problem. Given a set of locations where a species has been observed, the goal is to build a model to predict…

We propose a novel approach to learning the generative neural fields represented by linear combinations of implicit basis networks. Our algorithm learns basis networks in the form of implicit neural representations and their coefficients in…

机器学习 · 计算机科学 2023-10-31 Tackgeun You , Mijeong Kim , Jungtaek Kim , Bohyung Han

The availability of large-scale annotated image datasets and recent advances in supervised deep learning methods enable the end-to-end derivation of representative image features that can impact a variety of image analysis problems. Such…

计算机视觉与模式识别 · 计算机科学 2020-06-23 Euijoon Ahn , Jinman Kim , Ashnil Kumar , Michael Fulham , Dagan Feng

Determining the radial positions of galaxies up to a high accuracy depends on the correct identification of salient features in their spectra. Classical techniques for spectroscopic redshift estimation make use of template matching with…

天体物理仪器与方法 · 物理学 2019-05-15 Joana Frontera-Pons , Florent Sureau , Bruno Moraes , Jérôme Bobin , Filipe Abdalla

This paper proposes a novel deep learning framework named bidirectional-convolutional long short term memory (Bi-CLSTM) network to automatically learn the spectral-spatial feature from hyperspectral images (HSIs). In the network, the issue…

计算机视觉与模式识别 · 计算机科学 2017-03-24 Qingshan Liu , Feng Zhou , Renlong Hang , Xiaotong Yuan

Galaxy morphology reflects structural properties which contribute to understand the formation and evolution of galaxies. Deep convolutional networks have proven to be very successful in learning hidden features that allow for unprecedented…

星系天体物理 · 物理学 2022-12-07 Shoulin Wei , Yadi Li , Wei Lu , Nan Li , Bo Liang , Wei Dai , Zhijian Zhang

Molecular property prediction (e.g., energy) is an essential problem in chemistry and biology. Unfortunately, many supervised learning methods usually suffer from the problem of scarce labeled molecules in the chemical space, where such…

机器学习 · 计算机科学 2020-07-08 Zhongkai Hao , Chengqiang Lu , Zheyuan Hu , Hao Wang , Zhenya Huang , Qi Liu , Enhong Chen , Cheekong Lee

We use spatially-sparse two, three and four dimensional convolutional autoencoder networks to model sparse structures in 2D space, 3D space, and 3+1=4 dimensional space-time. We evaluate the resulting latent spaces by testing their…

计算机视觉与模式识别 · 计算机科学 2018-11-27 Benjamin Graham

Automated characterization of galactic substructure is an essential step in understanding the transformative physical processes driving galaxy evolution. In this study, we investigate the application of deep learning (DL) frameworks to…

Implicit neural representations (INRs) have significantly advanced the field of arbitrary-scale super-resolution (ASSR) of images. Most existing INR-based ASSR networks first extract features from the given low-resolution image using an…

计算机视觉与模式识别 · 计算机科学 2024-07-26 Jintong Hu , Bin Xia , Bin Chen , Wenming Yang , Lei Zhang

This paper demonstrates that spatial information can be used to learn interpretable representations in medical images using Self-Supervised Learning (SSL). Our proposed method, ISImed, is based on the observation that medical images exhibit…

计算机视觉与模式识别 · 计算机科学 2024-10-23 Nabil Jabareen , Dongsheng Yuan , Sören Lukassen

This thesis investigates unsupervised time series representation learning for sequence prediction problems, i.e. generating nice-looking input samples given a previous history, for high dimensional input sequences by decoupling the static…

机器学习 · 计算机科学 2018-04-19 Markus Beissinger

Generative learning is a powerful tool for representation learning, and shows particular promise for problems in biomedical imaging. However, in this context, sampling from the distribution is secondary to finding representations of real…

图像与视频处理 · 电气工程与系统科学 2022-09-07 Simon Myles Thomas

Deep neural networks need huge amount of training data, while in real world there is a scarcity of data available for training purposes. To resolve these issues, self-supervised learning (SSL) methods are used. SSL using geometric…

计算机视觉与模式识别 · 计算机科学 2022-02-18 Muhammad Ali , Sayed Hashim

Semi-supervised medical image segmentation has attracted much attention in recent years because of the high cost of medical image annotations. In this paper, we propose a novel Inherent Consistent Learning (ICL) method, aims to learn robust…

计算机视觉与模式识别 · 计算机科学 2023-04-19 Ye Zhu , Jie Yang , Si-Qi Liu , Ruimao Zhang

In this paper, we present an unsupervised learning approach for analyzing facial behavior based on a deep generative model combined with a convolutional neural network (CNN). We jointly train a variational auto-encoder (VAE) and a…

计算机视觉与模式识别 · 计算机科学 2018-05-14 Suman Saha , Rajitha Navarathna , Leonhard Helminger , Romann Weber

In this work, we present a new method for 3D face reconstruction from sparse-view RGB images. Unlike previous methods which are built upon 3D morphable models (3DMMs) with limited details, we leverage an implicit representation to encode…

计算机视觉与模式识别 · 计算机科学 2022-10-04 Moran Li , Haibin Huang , Yi Zheng , Mengtian Li , Nong Sang , Chongyang Ma

This paper introduces the use of single layer and deep convolutional networks for remote sensing data analysis. Direct application to multi- and hyper-spectral imagery of supervised (shallow or deep) convolutional networks is very…

计算机视觉与模式识别 · 计算机科学 2015-11-26 Adriana Romero , Carlo Gatta , Gustau Camps-Valls

We present a framework for detecting transient gamma-ray phenomena in a controlled environment by combining end-to-end simulations of the Fermi-LAT sky with self-supervised spatio-temporal deep learning. We generate a ten-year synthetic…