arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1907.00533cs.LGcs.DS
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学习链接

Learning to Link

Carnegie Mellon University(卡内基梅隆大学);Toyota Technical Institute at Chicago(芝加哥丰田技术研究所);Karlsruhe Institute of Technology(卡尔斯鲁厄理工学院)

Maria-Florina Balcan, Travis Dick, Manuel Lang

摘要:

聚类是许多现代数据分析管道的重要组成部分,包括网络分析和数据检索。不同的社区开发了许多不同的聚类算法,并且通常不清楚哪种算法将在特定的聚类任务上提供最佳性能。类似地,我们通常有多种方法来测量数据点之间的距离,最佳聚类性能可能需要这些指标的非平凡组合。在这项工作中,我们研究了数据驱动的算法选择和度量学习的聚类问题,其目标是同时学习最好的算法和度量为特定的应用程序。我们考虑的聚类算法的家庭是参数化的连接为基础的程序,包括单一的和完整的链接。我们学习的距离函数族是基距离函数的凸组合。我们设计了高效的学习算法,它接收来自聚类实例的特定于应用程序的分布的样本,并同时从这些类学习接近最佳的距离和聚类算法。我们还进行了全面的实证评估,我们的技术表明,它们可以导致显着提高聚类性能。

英文摘要:

Clustering is an important part of many modern data analysis pipelines, including network analysis and data retrieval. There are many different clustering algorithms developed by various communities, and it is often not clear which algorithm will give the best performance on a specific clustering task. Similarly, we often have multiple ways to measure distances between data points, and the best clustering performance might require a non-trivial combination of those metrics. In this work, we study data-driven algorithm selection and metric learning for clustering problems, where the goal is to simultaneously learn the best algorithm and metric for a specific application. The family of clustering algorithms we consider is parameterized linkage based procedures that includes single and complete linkage. The family of distance functions we learn over are convex combinations of base distance functions. We design efficient learning algorithms which receive samples from an application-specific distribution over clustering instances and simultaneously learn both a near-optimal distance and clustering algorithm from these classes. We also carry out a comprehensive empirical evaluation of our techniques showing that they can lead to significantly improved clustering performance.

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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