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arXiv 1708.06347stat.MLcs.LG
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分类问题的深度架构与多样架构

Deep vs. Diverse Architectures for Classification Problems

Kaplan University(卡普兰大学)

Colleen M. Farrelly

摘要:

这项研究比较了各种超级学习者和深度学习架构(基于机器学习和基于神经网络)在几个模拟和工业数据集上的分类问题,以评估性能和计算效率,因为这两种方法都具有良好的理论收敛特性。在非线性和混合线性/非线性预测关系数据集上,超级学习者公式在小到中等样本量(500-2500)下的表现优于其他方法,而深度神经网络在所有大小的线性预测关系数据集上表现良好。这表明与深度神经网络架构相比,超级学习器在现实世界数据的许多混乱分类问题上的收敛速度更快。超级学习者还产生可解释的模型,允许用户检查数据中的重要信号;此外,它们提供灵活的公式,用户可以通过低计算成本的基础算法保持良好的性能。K-最近邻(KNN)回归也证明了使用超级学习器框架的改进; KNN超级学习器始终优于深度架构和KNN回归,这表明超级学习器可以通过利用各种算法来探测数据空间来更好地捕获局部和全局几何特征。

英文摘要:

This study compares various superlearner and deep learning architectures (machine-learning-based and neural-network-based) for classification problems across several simulated and industrial datasets to assess performance and computational efficiency, as both methods have nice theoretical convergence properties. Superlearner formulations outperform other methods at small to moderate sample sizes (500-2500) on nonlinear and mixed linear/nonlinear predictor relationship datasets, while deep neural networks perform well on linear predictor relationship datasets of all sizes. This suggests faster convergence of the superlearner compared to deep neural network architectures on many messy classification problems for real-world data. Superlearners also yield interpretable models, allowing users to examine important signals in the data; in addition, they offer flexible formulation, where users can retain good performance with low-computational-cost base algorithms. K-nearest-neighbor (KNN) regression demonstrates improvements using the superlearner framework, as well; KNN superlearners consistently outperform deep architectures and KNN regression, suggesting that superlearners may be better able to capture local and global geometric features through utilizing a variety of algorithms to probe the data space.

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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