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arXiv 1710.04484stat.MLstat.AP
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简化合奏

Dimensionality Reduction Ensembles

Colleen M. Farrelly

摘要:

包围学习在监督学习中取得了许多成功,但在无监督学习和降维方面却很少。本研究探讨降维集成,使用主成分分析和流形学习技术,以捕捉线性,非线性,局部和全局功能的原始数据集。首先在模拟数据上测试简化集成,然后使用随机森林分类器在两个真实的医疗数据集上测试;结果表明这种方法的有效性,准确性接近完整数据集。局限性包括具有强性能的一些算法的计算成本,这可以通过分布式计算和开发这些算法的更有效版本来改善。

英文摘要:

Ensemble learning has had many successes in supervised learning, but it has been rare in unsupervised learning and dimensionality reduction. This study explores dimensionality reduction ensembles, using principal component analysis and manifold learning techniques to capture linear, nonlinear, local, and global features in the original dataset. Dimensionality reduction ensembles are tested first on simulation data and then on two real medical datasets using random forest classifiers; results suggest the efficacy of this approach, with accuracies approaching that of the full dataset. Limitations include computational cost of some algorithms with strong performance, which may be ameliorated through distributed computing and the development of more efficient versions of these algorithms.

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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