UOS Personalized Search Zhang Tao 장도

Zhang Tao Data Mining Contents Overview 1 The Outride Approach 2 The outride Personalized Search System 3 Testing Methodology and Results 4 Future Directions and Conclusion 5

Zhang Tao Data Mining Overview  What is the Contextual Computing Approach?  The Contextual Computing Approach is a breakthrough in personalized search efficiency.  Review the evolution of the field of information retrieval >Content-based approaches >Citation and hyperlink approaches >Usage-based IR methods

Zhang Tao Data Mining Overview Take into account that different people find different things relevant and that people’s interests and knowledge change over time System need A way to Compute personal relevancy

Zhang Tao Data Mining The outride Approach Text Contextualization Nature of information Information examined Application in use Individualization User’s goals Prior knowledge Past behaviors Text Computationa l techniques

Zhang Tao Data Mining The outride Approach  The primary ways to personalize a search are query augmentation and result processing.

Zhang Tao Data Mining The outride Approach Outride system architecture

Zhang Tao Data Mining The Outride System Outride Client Integrated into Internet Explorer Sidebar

Zhang Tao Data Mining The Outride System Personal hierarchy of each links Catalog of links User’s surf history Search results from entire web SidebarSidebar

Zhang Tao Data Mining The Outride System  User models and Open Directory Project (ODP)  The combination of query augmentation and result processing

Zhang Tao Data Mining Testing  Measure if the Outride system makes searches faster and easier to complete  Ready for testing: >Some novice and experienced web users >Outride and other search engines >12 search tasks (3 minutes/per)

Zhang Tao Data Mining Testing

Zhang Tao Data Mining Testing

Zhang Tao Data Mining Testing  Result analyzing >Some of the scenarios contained tasks directly supported by the functionality provided by the Outride system, creating an advantage against the other search engines. >Outride preserves context by keeping the search results open in the sidebar of the Web browser, making the contents of each search result accessible to the user with a single click.

Zhang Tao Data Mining Future Directions  Personalized search opens the door to a new set of challenges and opportunities.  Face to difficult problems of personalized search.  Personalized search and consensus search

Zhang Tao Data Mining Conclusion  The authors proposed a new type of IR system that personalized the search experience for each user across their interactions.  The contextualized computing approach toward the personalization of search is the next frontier toward significantly increasing search efficiency.

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