arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1906.09458cs.LGstat.ML
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基于主动学习的层次聚类扁平化

Flattening a Hierarchical Clustering through Active Learning

INRIA Lille(里尔法国国家信息与自动化研究所);Sapienza University of Rome(罗马大学);Google(谷歌)

Fabio Vitale, Anand Rajagopalan, Claudio Gentile

摘要:

我们研究主动学习的两两相似性的树叶起源于层次聚类程序。在可实现的设置中,我们提供了一个完整的表征的查询数量需要实现完美的重建的树切割。在不可实现的设置,我们依靠已知的重要抽样程序,以获得遗憾和查询复杂性的界限。我们的算法来与理论保证的统计误差,更重要的是,借给自己的线性时间实现的相关参数的问题。我们讨论这样的实现,证明他们的运行时间保证,并在现实世界的数据集上展示了令人信服的实际性能相比,被动学习和简单的主动学习基线我们的算法的初步实验。

英文摘要:

We investigate active learning by pairwise similarity over the leaves of trees originating from hierarchical clustering procedures. In the realizable setting, we provide a full characterization of the number of queries needed to achieve perfect reconstruction of the tree cut. In the non-realizable setting, we rely on known important-sampling procedures to obtain regret and query complexity bounds. Our algorithms come with theoretical guarantees on the statistical error and, more importantly, lend themselves to linear-time implementations in the relevant parameters of the problem. We discuss such implementations, prove running time guarantees for them, and present preliminary experiments on real-world datasets showing the compelling practical performance of our algorithms as compared to both passive learning and simple active learning baselines.

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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