为技术文档生成细粒度知识图谱,保留完整信息用于智能支持系统。
Constructing Micro Knowledge Graphs from Technical Support Documents
- 为每页技术文档构建微知识图谱,精准记录实体与动作的位置及关系。
- 支持从文档中提取完整步骤流程,并结构化表示为可推理的程序知识。
- 适合开发聊天机器人、问答系统等需要精确知识检索的应用开发者。
IBM Technotes 等短篇技术支援文档在技术支持领域常见,是构建聊天机器人、搜索引擎和问答系统的重要知识源。传统知识图谱(KG)因粗粒度处理,常丢失非关键实体与动作,影响搜索与推理。为此,本文提出为每页文档构建微知识图谱(micrograph),完整保留页面中所有实体与动作,并利用文档结构标注其出现位置及相互关系。我们定义了半结构化与纯文本知识的表示模式,提出从网页中提取步骤式解决方案的技术,并设计相应结构化表示方式。微知识图谱可作为增强知识源供技术支援应用使用,提升系统对细节知识的获取能力。
原文摘要 · Abstract (English)
Short technical support pages such as IBM Technotes are quite common in technical support domain. These pages can be very useful as the knowledge sources for technical support applications such as chatbots, search engines and question-answering (QA) systems. Information extracted from documents to drive technical support applications is often stored in the form of Knowledge Graph (KG). Building KGs from a large corpus of documents poses a challenge of granularity because a large number of entities and actions are present in each page. The KG becomes virtually unusable if all entities and actions from these pages are stored in the KG. Therefore, only key entities and actions from each page are extracted and stored in the KG. This approach however leads to loss of knowledge represented by entities and actions left out of the KG as they are no longer available to graph search and reasoning functions. We propose a set of techniques to create micro knowledge graph (micrograph) for each of such web pages. The micrograph stores all the entities and actions in a page and also takes advantage of the structure of the page to represent exactly in which part of that page these entities and actions appeared, and also how they relate to each other. These micrographs can be used as additional knowledge sources by technical support applications. We define schemas for representing semi-structured and plain text knowledge present in the technical support web pages. Solutions in technical support domain include procedures made of steps. We also propose a technique to extract procedures from these webpages and the schemas to represent them in the micrographs. We also discuss how technical support applications can take advantage of the micrographs.
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