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arXiv cs/0108023cs.CLcs.IR
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基于结构化语言模型的信息抽取

Information Extraction Using the Structured Language Model

Ciprian Chelba, Milind Mahajan

摘要:

本文提出了一种数据驱动的方法来信息抽取(视为模板填充)使用结构化语言模型(SLM)作为统计分析器。模板填充的任务被转换为使用SLM的约束解析。该模型是从一组用帧/槽标签和跨度注释的句子中自动训练的。培训分阶段进行:首先,训练受约束的句法分析器,使得对训练数据的分析满足指定的语义跨度,然后,丰富非终端标签以包含语义信息,最后,在从前一阶段得到的分析树上训练受约束的句法+语义分析器。尽管使用的训练数据量很小,但该模型的性能优于为MiPad -个人信息管理-任务手动编写的简单语义语法的槽级准确性。

英文摘要:

The paper presents a data-driven approach to information extraction (viewed as template filling) using the structured language model (SLM) as a statistical parser. The task of template filling is cast as constrained parsing using the SLM. The model is automatically trained from a set of sentences annotated with frame/slot labels and spans. Training proceeds in stages: first a constrained syntactic parser is trained such that the parses on training data meet the specified semantic spans, then the non-terminal labels are enriched to contain semantic information and finally a constrained syntactic+semantic parser is trained on the parse trees resulting from the previous stage. Despite the small amount of training data used, the model is shown to outperform the slot level accuracy of a simple semantic grammar authored manually for the MiPad --- personal information management --- task.

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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