arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1407.7595physics.comp-phhep-exhep-ph
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并行计算的加速矩阵元法

Accelerated Matrix Element Method with Parallel Computing

Doug Schouten, Adam DeAbreu, Bernd Stelzer

摘要:

矩阵元方法利用从头计算的概率密度作为强有力的判别过程中的实验粒子物理学的兴趣。该方法已成功地用于以前和当前的对撞机实验。然而,这种方法对于具有许多粒子和自由度的最终状态的计算复杂性使其与监督分类方法(例如决策树、k最近邻或神经网络)相比处于不利地位。本文提出了一种使用图形处理单元的矩阵元素技术的具体实现。由于多维积分的内在并行性,可以很容易地实现显着的加速比,这使得矩阵元技术在对撞机实验中的普遍使用可行。

英文摘要:

The matrix element method utilizes ab initio calculations of probability densities as powerful discriminants for processes of interest in experimental particle physics. The method has already been used successfully at previous and current collider experiments. However, the computational complexity of this method for final states with many particles and degrees of freedom sets it at a disadvantage compared to supervised classification methods such as decision trees, k nearest-neighbour, or neural networks. This note presents a concrete implementation of the matrix element technique using graphics processing units. Due to the intrinsic parallelizability of multidimensional integration, dramatic speedups can be readily achieved, which makes the matrix element technique viable for general usage at collider experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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