Personalized Book Search System For The Visually Impaired

In 21st century, the development of Internet and information technology is affecting and changing people's work, study and life unprecedently. While the progress in Internet and information technology brings convenience, it also brings new challenges and opportunities to people with disabilities. How to effectively solve their information access problem is becoming a major issue related to social development. The concept of Information Accessibility is a positive response to this issue. How to promote and develop this concept, make use of any related techniques to build a good information platform is an effective solution.China Digital Library for Visual Impairment is a comprehensive reading site for the visually impaired. To blind people, the main obstacle while accessing to site is how to locate the information which they need. Therefore, it is essential to provide a convenient and effective book search service on the fundament of rich book resources. Considering the problem of finding needed book, this paper proposed a personalized book search method for visually impaired. Firstly take user input into account, we use a query modification method with constructing a user-query correlated graph to expand user origin query and diminish the query's ambiguity and fuzzy. Then, on the fundament of book metadata based full-text retrieval, we analyze the user data for user behavior modeling and provide a personalized book rank result which is consistent with user preference. Finally, we build a barrier-free book search interface and implement the prototype for visually impaired, according to their usage habit.