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arXiv 1908.01837cs.CLcs.IRcs.LG
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海量文本语料库中的结构化知识发现

Structured Knowledge Discovery from Massive Text Corpus

Southwest University(西南大学);Florida State University(佛罗里达州立大学);Baidu Research(百度研究院);Tencent America(腾讯美国)

Chenwei Zhang

摘要:

在互联网蓬勃发展的今天,人们受益于其开放性和共享性带来的便利。大量的自然语言文本正在由用户以各种形式生成,例如搜索查询、文档和社交媒体帖子。由于非结构化文本语料库通常是嘈杂和混乱的,它成为当务之急,正确识别和准确注释结构化信息,以获得有意义的见解或更好地理解非结构化文本。另一方面,现有的结构化信息,它体现了我们的知识,如实体或概念关系,往往遭受不完整或质量相关的问题。由于大量的文本提供了丰富的语义信息,因此利用未注释文本语料库的连续性来扩展和改进现有的结构化知识并减少注释工作也很重要。本文将介绍从海量文本中有效发现结构化知识的原理、模型和算法。我们通常有兴趣借助结构化注释或结构感知建模来获得见解并更好地理解非结构化文本。此外,鉴于现有的结构化知识,我们有兴趣扩大其规模和提高其质量利用文本语料库的连续性。本文主要研究了四个方面的问题:面向自然语言理解的结构化意图检测、结构感知的自然语言建模、生成式结构化知识扩展和结构化知识的同义词精化。

英文摘要:

Nowadays, with the booming development of the Internet, people benefit from its convenience due to its open and sharing nature. A large volume of natural language texts is being generated by users in various forms, such as search queries, documents, and social media posts. As the unstructured text corpus is usually noisy and messy, it becomes imperative to correctly identify and accurately annotate structured information in order to obtain meaningful insights or better understand unstructured texts. On the other hand, the existing structured information, which embodies our knowledge such as entity or concept relations, often suffers from incompleteness or quality-related issues. Given a gigantic collection of texts which offers rich semantic information, it is also important to harness the massiveness of the unannotated text corpus to expand and refine existing structured knowledge with fewer annotation efforts. In this dissertation, I will introduce principles, models, and algorithms for effective structured knowledge discovery from the massive text corpus. We are generally interested in obtaining insights and better understanding unstructured texts with the help of structured annotations or by structure-aware modeling. Also, given the existing structured knowledge, we are interested in expanding its scale and improving its quality harnessing the massiveness of the text corpus. In particular, four problems are studied in this dissertation: Structured Intent Detection for Natural Language Understanding, Structure-aware Natural Language Modeling, Generative Structured Knowledge Expansion, and Synonym Refinement on Structured Knowledge.

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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