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arXiv 1106.4571cs.CLcs.AI
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获取自然语言接口的词义映射

Acquiring Word-Meaning Mappings for Natural Language Interfaces

University of Utah(犹他大学);University of Texas(德克萨斯大学)

C. Thompson

摘要:

本文重点介绍了一个系统,WOLFIE(WORD学习从解释的例子),获得一个语义词汇从语料库的句子配对的语义表示。所学习的词汇由短语和意义表征组成。WOLFIE是一个集成系统的一部分,该系统学习将句子转换为逻辑数据库查询等表示。实验结果表明,WOLFIE的能力,学习有用的词汇的数据库接口在四个不同的自然语言。WOLFIE学习的词汇的有用性相比,通过类似的系统,与有利的结果WOLFIE收购。第二组实验展示了WOLFIE扩展到更大和更困难的语料库的能力,尽管是人工生成的。在自然语言获取中,很难收集监督学习所需的注释数据;然而,未注释的数据是相当丰富的。主动学习方法尝试仅选择信息量最大的示例进行注释和训练,因此在自然语言应用中可能非常有用。然而,迄今为止,大多数主动学习的结果只考虑了标准分类任务。为了在保持准确性的同时减少注释工作,我们将主动学习应用于语义词典。我们表明,主动学习可以显着减少所需的注释示例的数量,以达到给定的性能水平。

英文摘要:

This paper focuses on a system, WOLFIE (WOrd Learning From Interpreted Examples), that acquires a semantic lexicon from a corpus of sentences paired with semantic representations. The lexicon learned consists of phrases paired with meaning representations. WOLFIE is part of an integrated system that learns to transform sentences into representations such as logical database queries. Experimental results are presented demonstrating WOLFIE's ability to learn useful lexicons for a database interface in four different natural languages. The usefulness of the lexicons learned by WOLFIE are compared to those acquired by a similar system, with results favorable to WOLFIE. A second set of experiments demonstrates WOLFIE's ability to scale to larger and more difficult, albeit artificially generated, corpora. In natural language acquisition, it is difficult to gather the annotated data needed for supervised learning; however, unannotated data is fairly plentiful. Active learning methods attempt to select for annotation and training only the most informative examples, and therefore are potentially very useful in natural language applications. However, most results to date for active learning have only considered standard classification tasks. To reduce annotation effort while maintaining accuracy, we apply active learning to semantic lexicons. We show that active learning can significantly reduce the number of annotated examples required to achieve a given level of 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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