Learning to rank complex semantic relationships

Abstract

This paper presents a novel ranking method for complex semantic relationship (semantic association) search based on user preferences. The authors' method employs a learning-to-rank algorithm to capture each user's preferences. Using this, it automatically constructs a personalized ranking function for the user. The ranking function is then used to sort the results of each subsequent query by the user. Query results that more closely match the user's preferences gain higher ranks. Their method is evaluated using a real-world RDF knowledge base created from Freebase linked-open-data. The experimental results show that the authors' method significantly improves the ranking quality in terms of capturing user preferences, compared with the state-of-the-art. Copyright © 2012, IGI Global.