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Domain Adaptation is an actively researched problem in Computer Vision. In this work, we propose an approach that leverages unsupervised data to bring the source and target distributions closer in a learned joint feature space. We…

Computer Vision and Pattern Recognition · Computer Science 2018-04-16 Swami Sankaranarayanan , Yogesh Balaji , Carlos D. Castillo , Rama Chellappa

We present a strong lensing modeling technique based on versatile basis sets for the lens and source planes. Our method uses high performance Monte Carlo algorithms, allows for an adaptive build up of complexity and bridges the gap between…

Cosmology and Nongalactic Astrophysics · Physics 2015-11-11 Simon Birrer , Adam Amara , Alexandre Refregier

The limited ability of Convolutional Neural Networks to generalize to images from previously unseen domains is a major limitation, in particular, for safety-critical clinical tasks such as dermoscopic skin cancer classification. In order to…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Katharina Fogelberg , Sireesha Chamarthi , Roman C. Maron , Julia Niebling , Titus J. Brinker

Weak gravitational lensing provides a unique method to directly map the dark matter in the universe and measure cosmological parameters. Current weak lensing surveys are limited by the atmospheric seeing from the ground and by the small…

Learning from quantum data using classical machine learning models has emerged as a promising paradigm toward realizing quantum advantages. Despite extensive analyses on their performance, clean and fully labeled quantum data from the…

Quantum Physics · Physics 2026-03-31 Kosuke Ito , Akira Tanji , Hiroshi Yano , Yudai Suzuki , Naoki Yamamoto

Gravitational wave astronomy has recently emerged as a new way to study our Universe. In this work, we survey the potential of gravitational wave interferometers to detect macroscopic astrophysical objects comprising the dark matter.…

Cosmology and Nongalactic Astrophysics · Physics 2021-10-04 Joerg Jaeckel , Sebastian Schenk , Michael Spannowsky

The different regimes of gravitational lensing constitutes an interesting tool in order to map the mass distribution in galaxy clusters on different scales. In this proceedings article, I review some work I have performed on this topic.…

Astrophysics · Physics 2008-07-18 Marceau Limousin

Bridging the 'reality gap' that separates simulated robotics from experiments on hardware could accelerate robotic research through improved data availability. This paper explores domain randomization, a simple technique for training models…

Robotics · Computer Science 2017-03-22 Josh Tobin , Rachel Fong , Alex Ray , Jonas Schneider , Wojciech Zaremba , Pieter Abbeel

The Dark Matter present in the Large-Scale Structure of the Universe is invisible, but its presence can be inferred through the small gravitational lensing effect it has on the images of far away galaxies. By measuring this lensing effect…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-18 Benjamin Remy , Francois Lanusse , Zaccharie Ramzi , Jia Liu , Niall Jeffrey , Jean-Luc Starck

We argue that the lensing power spectrum of astrometric shift (lensing shift power spectrum) is a powerful tool of the clustering property of dark matter on subgalactic scales. First we give the formalism to probe the nature of dark matter…

Cosmology and Nongalactic Astrophysics · Physics 2024-01-01 Kaiki Taro Inoue , Takumi Shinohara , Teruaki Suyama , Tomo Takahashi

Deep learning-based models in medical imaging often struggle to generalize effectively to new scans due to data heterogeneity arising from differences in hardware, acquisition parameters, population, and artifacts. This limitation presents…

Image and Video Processing · Electrical Eng. & Systems 2023-08-09 Sebastian Nørgaard Llambias , Mads Nielsen , Mostafa Mehdipour Ghazi

Strong gravitational lensing has been identified as a promising astrophysical probe to study the particle nature of dark matter. In this paper we present a detailed study of the power spectrum of the projected mass density (convergence)…

Cosmology and Nongalactic Astrophysics · Physics 2018-11-28 Ana Díaz Rivero , Cora Dvorkin , Francis-Yan Cyr-Racine , Jesús Zavala , Mark Vogelsberger

In the cold dark matter scenario, dark matter halos are assembled hierarchically from smaller subunits. Some of these subunits are disrupted during the merging process, whereas others survive temporarily in the form of subhalos. A…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 E. Zackrisson , T. Riehm

Can faces acquired by low-cost depth sensors be useful to catch some characteristic details of the face? Typically the answer is no. However, new deep architectures can generate RGB images from data acquired in a different modality, such as…

Computer Vision and Pattern Recognition · Computer Science 2019-01-25 Matteo Fabbri , Guido Borghi , Fabio Lanzi , Roberto Vezzani , Simone Calderara , Rita Cucchiara

Weak gravitational lensing is responsible for the shearing and magnification of the images of high-redshift sources due to the presence of intervening matter. The distortions are due to fluctuations in the gravitational potential, and are…

Astrophysics · Physics 2009-09-29 D. Munshi , P. Valageas , L. Van Waerbeke , A. Heavens

Generalizability of deep learning models may be severely affected by the difference in the distributions of the train (source domain) and the test (target domain) sets, e.g., when the sets are produced by different hardware. As a…

Image and Video Processing · Electrical Eng. & Systems 2022-08-02 Ivan Zakazov , Vladimir Shaposhnikov , Iaroslav Bespalov , Dmitry V. Dylov

Scalable systems for automated driving have to reliably cope with an open-world setting. This means, the perception systems are exposed to drastic domain shifts, like changes in weather conditions, time-dependent aspects, or geographic…

Computer Vision and Pattern Recognition · Computer Science 2022-09-12 Larissa T. Triess , Mariella Dreissig , Christoph B. Rist , J. Marius Zöllner

Although deep neural networks have achieved remarkable results for the task of semantic segmentation, they usually fail to generalize towards new domains, especially when performing synthetic-to-real adaptation. Such domain shift is…

Computer Vision and Pattern Recognition · Computer Science 2021-10-07 Adriano Cardace , Pierluigi Zama Ramirez , Samuele Salti , Luigi Di Stefano

The performance of a machine learning model degrades when it is applied to data from a similar but different domain than the data it has initially been trained on. To mitigate this domain shift problem, domain adaptation (DA) techniques…

Machine Learning · Computer Science 2024-10-08 Felix Ott , David Rügamer , Lucas Heublein , Bernd Bischl , Christopher Mutschler

The nature of the dark matter remains a mystery. The possibility of an unstable dark matter particle decaying to invisible daughter particles has been explored many times in the past few decades. Meanwhile, weak gravitational lensing shear…

Cosmology and Nongalactic Astrophysics · Physics 2010-12-24 Mei-Yu Wang , Andrew R. Zentner