Title page for etd-0813112-201905


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URN etd-0813112-201905
Author Li-Zen Chen
Author's Email Address No Public.
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Department Information Management
Year 2011
Semester 2
Degree Master
Type of Document
Language English
Title Personalized Document Recommendation by Latent Dirichlet Allocation
Date of Defense 2012-07-31
Page Count 77
Keyword
  • recommender systems
  • collaborative filtering
  • hidden topic analysis
  • latent Dirichlet allocation
  • content-based filtering
  • Abstract Accompanying with the rapid growth of Internet, people around the world can easily distribute, browse, and share as much information as possible through the Internet. The enormous amount of information, however, causes the information overload problem that is beyond users’ limited information processing ability. Therefore, recommender systems arise to help users to look for useful information when they cannot describe the requirements precisely.
    The filtering techniques in recommender systems can be divided into content-based filtering (CBF) and collaborative filtering (CF). Although CF is shown to be superior over CBF in literature, personalized document recommendation relies more on CBF simply because of its text content in nature. Nevertheless, document recommendation task provides a good chance to integrate both techniques into a hybrid one, and enhance the overall recommendation performance.
    The objective of this research is thus to propose a hybrid filtering approach for personalized document recommendation. Particularly, latent Dirichlet allocation to uncover latent semantic structure in documents is incorporated to help us to either obtain robust document similarity in CF, or explore user profiles in CBF. Two experiments are conducted accordingly. The results show that our proposed approach outperforms other counterparts on the recommendation performance, which justifies the feasibility of our proposed approach in real applications.
    Advisory Committee
  • San-Yi Huang - chair
  • Wen-Feng Hsiao - co-chair
  • Te-min Chang - advisor
  • Files
  • etd-0813112-201905.pdf
  • indicate access worldwide
    Date of Submission 2012-08-13

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