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arXiv 1507.08396cs.CLcs.IRcs.LGstat.ML
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大规模半结构化文档的标签加权主题模型

Tag-Weighted Topic Model For Large-scale Semi-Structured Documents

Shuangyin Li, Jiefei Li, Guan Huang, Ruiyang Tan, Rong Pan

摘要:

到目前为止,在互联网的发展过程中已经出现了大量的半结构化文档(SSD)。这些SSD包含非结构化功能(例如,纯文本)和元数据(例如,标签)。以往的工作主要集中在非结构化文本的建模,最近,已经提出了一些其他的方法来建模的非结构化文本与特定的标签。建立一个通用的SSD模型仍然是一个重要的问题,无论是模型的适应性和效率。我们提出了一种新的方法来建模的SSD的所谓的标签加权主题模型(TWTM)。TWTM是一个利用标签和单词信息的框架,不仅可以学习文档主题和主题词分布,还可以推断文本挖掘任务的标签主题分布。我们提出了一个有效的变分推理方法与EM算法估计模型参数。同时,在MapReduce分布式计算平台下,提出了三种大规模SSD建模方案。实验结果表明,该模型的有效性,效率和鲁棒性,通过比较与国家的最先进的方法在文档建模,标签预测和文本分类。我们还展示了三种分布式解决方案在文档建模的时间和准确性方面的性能。

英文摘要:

To date, there have been massive Semi-Structured Documents (SSDs) during the evolution of the Internet. These SSDs contain both unstructured features (e.g., plain text) and metadata (e.g., tags). Most previous works focused on modeling the unstructured text, and recently, some other methods have been proposed to model the unstructured text with specific tags. To build a general model for SSDs remains an important problem in terms of both model fitness and efficiency. We propose a novel method to model the SSDs by a so-called Tag-Weighted Topic Model (TWTM). TWTM is a framework that leverages both the tags and words information, not only to learn the document-topic and topic-word distributions, but also to infer the tag-topic distributions for text mining tasks. We present an efficient variational inference method with an EM algorithm for estimating the model parameters. Meanwhile, we propose three large-scale solutions for our model under the MapReduce distributed computing platform for modeling large-scale SSDs. The experimental results show the effectiveness, efficiency and the robustness by comparing our model with the state-of-the-art methods in document modeling, tags prediction and text classification. We also show the performance of the three distributed solutions in terms of time and accuracy on document modeling.

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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