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We discuss the complexity of GPD phenomenology, comment on the technological needs for a global analysis, and report on model and neural network fits to the photon electroproduction off unpolarized proton. We also point out that…

高能物理 - 唯象学 · 物理学 2017-08-23 Kresimir Kumericki , Dieter Mueller

We consider the problem of analyzing the heterogeneity of clustering distributions for multiple groups of observed data, each of which is indexed by a covariate value, and inferring global clusters arising from observations aggregated over…

统计方法学 · 统计学 2012-12-06 XuanLong Nguyen

Many state-of-the-art algorithms for solving hard combinatorial problems in artificial intelligence (AI) include elements of stochasticity that lead to high variations in runtime, even for a fixed problem instance. Knowledge about the…

人工智能 · 计算机科学 2018-07-10 Katharina Eggensperger , Marius Lindauer , Frank Hutter

We seek to improve deep neural networks by generalizing the pooling operations that play a central role in current architectures. We pursue a careful exploration of approaches to allow pooling to learn and to adapt to complex and variable…

机器学习 · 统计学 2015-10-13 Chen-Yu Lee , Patrick W. Gallagher , Zhuowen Tu

The process of aggregation is ubiquitous in almost all deep nets models. It functions as an important mechanism for consolidating deep features into a more compact representation, whilst increasing robustness to overfitting and providing…

机器学习 · 计算机科学 2021-07-12 Eng-Jon Ong , Sameed Husain , Miroslaw Bober

Recent works have shown that deep neural networks can be employed to solve partial differential equations, giving rise to the framework of physics informed neural networks. We introduce a generalization for these methods that manifests as a…

数值分析 · 数学 2021-03-25 Remco van der Meer , Cornelis Oosterlee , Anastasia Borovykh

We present recent results of the NNPDF collaboration on a full DIS analysis of Parton Distribution Functions (PDFs). Our method is based on the idea of combining a Monte Carlo sampling of the probability measure in the space of PDFs with…

高能物理 - 唯象学 · 物理学 2008-05-21 NNPDF Collaboration , M. Ubiali , R. D. Ball , L. Del Debbio , S. Forte , A. Guffanti , J. I. Latorre , A. Piccione , J. Rojo

Network embedding is an effective technique to learn the low-dimensional representations of nodes in networks. Real-world networks are usually with multiplex or having multi-view representations from different relations. Recently, there has…

机器学习 · 计算机科学 2022-03-08 Qifan Wang , Yi Fang , Anirudh Ravula , Ruining He , Bin Shen , Jingang Wang , Xiaojun Quan , Dongfang Liu

When a large body of data from diverse experiments is analyzed using a theoretical model with many parameters, the standard error matrix method and the general tools for evaluating errors may become inadequate. We present an iterative…

高能物理 - 唯象学 · 物理学 2009-07-24 J. Pumplin , D. R. Stump , W. K. Tung

We describe preliminary results from an effort to quantify the uncertainties in parton distribution functions and the resulting uncertainties in predicted physical quantities. The production cross section of the $W$ boson is given as a…

高能物理 - 唯象学 · 物理学 2007-05-23 R. Brock , D. Casey , J. Huston , J. Kalk , J. Pumplin , D. Stump , W. K. Tung

It is well known that the output of a Neural Network trained to disentangle between two classes has a probabilistic interpretation in terms of the a-posteriori Bayesian probability, provided that a unary representation is taken for the…

数据分析、统计与概率 · 物理学 2009-10-31 Lluis Garrido , Aurelio Juste

Probabilistic convolutional neural networks, which predict distributions of predictions instead of point estimates, led to recent advances in many areas of computer vision, from image reconstruction to semantic segmentation. Besides state…

计算机视觉与模式识别 · 计算机科学 2021-01-19 Josef Lorenz Rumberger , Lisa Mais , Dagmar Kainmueller

I briefly discuss some recent developments (and recall some old news) in the theory and phenomenology of generalised parton distributions.

高能物理 - 唯象学 · 物理学 2008-08-08 Markus Diehl

I present an overview of some current topics in the measurement of Parton Distribution Functions.

高能物理 - 唯象学 · 物理学 2015-06-25 Jon Pumplin

Bayesian neural networks (BNNs) have recently regained a significant amount of attention in the deep learning community due to the development of scalable approximate Bayesian inference techniques. There are several advantages of using…

机器学习 · 统计学 2019-05-28 Aliaksandr Hubin , Geir Storvik

Bayesian inference promises a framework for principled uncertainty quantification of neural network predictions. Barriers to adoption include the difficulty of fully characterizing posterior distributions on network parameters and the…

机器学习 · 统计学 2025-01-22 Katharine Fisher , Youssef Marzouk

The generalized parton distributions are non-perturbative objects, which encode information on long distance dynamics in a number of exclusive processes. They are hybrids of conventional parton densities, distribution amplitudes and hadron…

高能物理 - 唯象学 · 物理学 2007-05-23 A. V. Belitsky , D. Müller

This paper presents preliminary work on using deep neural networks to guide general-purpose heuristic algorithms for performing utilitarian combinatorial assignment. In more detail, we use deep learning in an attempt to produce heuristics…

人工智能 · 计算机科学 2021-07-02 Fredrik Präntare , Mattias Tiger , David Bergström , Herman Appelgren , Fredrik Heintz

Graph neural networks (GNNs) have been demonstrated to be a powerful algorithmic model in broad application fields for their effectiveness in learning over graphs. To scale GNN training up for large-scale and ever-growing graphs, the most…

分布式、并行与集群计算 · 计算机科学 2023-11-30 Haiyang Lin , Mingyu Yan , Xiaochun Ye , Dongrui Fan , Shirui Pan , Wenguang Chen , Yuan Xie

In this paper, we propose new nonparametric approach to network inference that may be viewed as a fusion of block sampling procedures for temporally and spatially dependent processes with the classical network methodology. We develop…

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