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arXiv 1005.0104cs.AI
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用于重叠源提取的联合结构模型

Joint Structured Models for Extraction from Overlapping Sources

IIT Bombay(印度理工学院孟买分校)

Rahul Gupta, Sunita Sarawagi

摘要:

我们考虑的问题,联合训练结构化模型提取源的实例享有部分重叠。这具有重要的应用,如网络上的用户驱动的ad-hoc信息抽取。这种应用在源的数量和它们的任意重叠模式方面提出了新的挑战,这是以前对两个源应用的集体训练计划所没有的。我们提出了一个基于协议的学习框架和替代方案,以权衡易处理性,对噪声的鲁棒性和协议的程度。我们提供了一个原则性的计划,以发现低噪声协议集的未标记的数据源。通过对58个真实数据集的广泛实验,我们确定了我们在最大文本段上附加奖励协议的方法提供了最佳权衡,并且还在集体推理,分阶段训练和多视图学习等替代方案上得分。

英文摘要:

We consider the problem of jointly training structured models for extraction from sources whose instances enjoy partial overlap. This has important applications like user-driven ad-hoc information extraction on the web. Such applications present new challenges in terms of the number of sources and their arbitrary pattern of overlap not seen by earlier collective training schemes applied on two sources. We present an agreement-based learning framework and alternatives within it to trade-off tractability, robustness to noise, and extent of agreement. We provide a principled scheme to discover low-noise agreement sets in unlabeled data across the sources. Through extensive experiments over 58 real datasets, we establish that our method of additively rewarding agreement over maximal segments of text provides the best trade-offs, and also scores over alternatives such as collective inference, staged training, and multi-view learning.

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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