arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1401.5697cs.CL
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基于维基百科的自然语言处理语义解释

Wikipedia-based Semantic Interpretation for Natural Language Processing

Technion—Israel Institute of Technology(以色列理工学院)

Evgeniy Gabrilovich, Shaul Markovitch

摘要:

自然语言语义的充分表示需要访问大量的常识和特定领域的世界知识。该领域以前的工作是基于纯粹的统计技术,没有利用背景知识,有限的词典知识库,如WordNet,或巨大的手工努力,如CYC项目。在这里,我们提出了一种新的方法,称为显式语义分析(ESA),不受限制的自然语言文本的细粒度语义解释。我们的方法表示的含义在一个高维空间的概念来自维基百科,存在的最大的百科全书。我们明确地表示任何文本的含义在维基百科为基础的概念。我们评估我们的方法对文本分类和计算自然语言文本片段之间的语义相关度的有效性。使用ESA的结果显着改善了在这两个任务的现有技术的先前状态。重要的是,由于使用自然概念,ESA模型很容易向人类用户解释。

英文摘要:

Adequate representation of natural language semantics requires access to vast amounts of common sense and domain-specific world knowledge. Prior work in the field was based on purely statistical techniques that did not make use of background knowledge, on limited lexicographic knowledge bases such as WordNet, or on huge manual efforts such as the CYC project. Here we propose a novel method, called Explicit Semantic Analysis (ESA), for fine-grained semantic interpretation of unrestricted natural language texts. Our method represents meaning in a high-dimensional space of concepts derived from Wikipedia, the largest encyclopedia in existence. We explicitly represent the meaning of any text in terms of Wikipedia-based concepts. We evaluate the effectiveness of our method on text categorization and on computing the degree of semantic relatedness between fragments of natural language text. Using ESA results in significant improvements over the previous state of the art in both tasks. Importantly, due to the use of natural concepts, the ESA model is easy to explain to human users.

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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