HANDBOOK FOR THE GREAT08 CHALLENGE: AN IMAGE ANALYSIS COMPETITION FOR COSMOLOGICAL LENSING
HANDBOOK FOR THE GREAT08 CHALLENGE: AN IMAGE ANALYSIS COMPETITION FOR COSMOLOGICAL LENSING
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DOI：
10.1214/08-aoas222
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发表时间：
2008-02
期刊：
影响因子：
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通讯作者：
S. Bridle;John Shawe-Taylor;A. Amara;D. Applegate;S. Balan;Joel Berge;Gary M. Bernstein;H. Dahle;T. Erben;Mandeep Gill;A. Heavens;C. Heymans;F. W. High;H. Hoekstra;Mike Jarvis;D. Kirk;Thomas Kitching;J. Kneib;K. Kuijken;David Lagatutta;R. Mandelbaum;R. Massey;Y. Mellier;Baback Moghaddam;Yassir Moudden;Reiko Nakajima;S. Paulin-Henriksson;S. Pires;A. Rassat;A. Réfrégier;J. Rhodes;T. Schrabback;E. Semboloni;M. Shmakova;L. Waerbeke;D. Witherick;L. Voigt;D. Wittman
中科院分区：
文献类型：
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作者：
S. Bridle;John Shawe-Taylor;A. Amara;D. Applegate;S. Balan;Joel Berge;Gary M. Bernstein;H. Dahle;T. Erben;Mandeep Gill;A. Heavens;C. Heymans;F. W. High;H. Hoekstra;Mike Jarvis;D. Kirk;Thomas Kitching;J. Kneib;K. Kuijken;David Lagatutta;R. Mandelbaum;R. Massey;Y. Mellier;Baback Moghaddam;Yassir Moudden;Reiko Nakajima;S. Paulin-Henriksson;S. Pires;A. Rassat;A. Réfrégier;J. Rhodes;T. Schrabback;E. Semboloni;M. Shmakova;L. Waerbeke;D. Witherick;L. Voigt;D. Wittman
引力透镜精度测试2008 （GREAT08）挑战赛关注的是一个对未来宇宙学观测至关重要的问题。遥远星系的形状可以用来确定暗能量的特性和引力的本质，因为来自这些星系的光被暗物质的引力所弯曲。观测到的星系图像出现了扭曲，尽管只是轻微的，而且它们的形状必须精确地从像素化、卷积和噪声的影响中分离出来。通过剪切测试程序（STEP），全球引力透镜界在测量这些畸变的技术上取得了重大进展。通过STEP，我们在自己的社区中进行了挑战，并认识到这个特定的图像分析问题与统计推断、逆问题和计算学习方面的专家完美匹配。因此，为了继续近年来所取得的进展，我们正在寻求从这些社区吸收新的思想。本文件详细介绍了GREAT08挑战的潜在参与者。请访问www.great08challenge.info获取最新信息。
The GRavitational lEnsing Accuracy Testing 2008 (GREAT08) Challenge focuses on a problem that is of crucial importance for future observations in cosmology. The shapes of distant galaxies can be used to determine the properties of dark energy and the nature of gravity, because light from those galaxies is bent by gravity from the intervening dark matter. The observed galaxy images appear distorted, although only slightly, and their shapes must be precisely disentangled from the effects of pixelisation, convolution and noise. The worldwide gravitational lensing community has made significant progress in techniques to measure these distortions via the Shear TEsting Program (STEP). Via STEP, we have run challenges within our own community, and come to recognise that this particular image analysis problem is ideally matched to experts in statistical inference, inverse problems and computational learning. Thus, in order to continue the progress seen in recent years, we are seeking an infusion of new ideas from these communities. This document details the GREAT08 Challenge for potential participants. Please visit www.great08challenge.info for the latest information.