Relation Extraction from Wikipedia Using Subtree Mining

The exponential growth and reliability of Wikipedia have made it a promising data source for intelligent systems. The first challenge of Wikipedia is to make the encyclopedia machine-processable. In this study, we address the problem of extracting relations among entities from Wikipedia’s English articles, which in turn can serve for intelligent systems to satisfy users’ information needs. Our proposed method first anchors the appearance of entities in Wikipedia articles using some heuristic rules that are supported by their encyclopedic style. Therefore, it uses neither the Named Entity Recognizer (NER) nor the Coreference Resolution tool, which are sources of errors for relation extraction. It then classifies the relationships among entity pairs using SVM with features extracted from the web structure and subtrees mined from the syntactic structure of text. The innovations behind our work are the following: a) our method makes use of Wikipedia characteristics for entity alloc...

• Type: Conference
• Year: 2007
• Where: AAAI
• Authors: Dat P. T. Nguyen, Yutaka Matsuo, Mitsuru Ishizuka
• Keywords: AAAI 2007, Entity Pair, Intelligent Agents, Intelligent Systems, Wikipedia