Knowledge Graphs for Textbooks: Extraction and Completion Techniques

This paper aims to apply knowledge graph construction techniques to textbooks, explicitly focusing on the challenge of the absence of domain-specific schema for each textbook. Various entity and relation extraction models are utilized to capture logical and semantic information related to the textbook’s topic. These models include a Text-Encoding-Initiative (TEI) model to extract hierarchical concepts, spaCy Natural Language Processing (NLP), and Google Cloud Natural Language to extract semantic information from the main textual content. The study includes a case study on a cloud computing textbook, where each approach is evaluated and analyzed. Ultimately, the goal is to create knowledge graphs of textbooks, enabling the completion task of predicting missing entities or relations in a low-dimensional space.