| 基于改进TextTiling方法的用户新兴趣发现的研究 |
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| 引用本文： | 邹博伟,张宇,范基礼,郑伟,刘挺.基于改进TextTiling方法的用户新兴趣发现的研究[J].计算机研究与发展,2009,46(9). |
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| 作者姓名： | 邹博伟 张宇 范基礼 郑伟 刘挺 |
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| 作者单位： | 哈尔滨工业大学信息检索研究室,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金项目，国家"八六三"高技术研究发展计划基金项目 |
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| 摘 要： | 个性化信息检索可以根据用户的检索兴趣返回个性化的检索结果.提出了用户新兴趣发现子任务,根据用户检索对象的变化识别包含新检索兴趣的查询.同时,引入TextTiling方法并对其进行改进,使系统可以自动选择合适的动态阈值并准确发现用户检索兴趣的转移.在构建的标准评测集上的实验结果表明,改进的TextTiling方法使得用户新兴趣发现系统性能提高了16.4%,而且此子任务使得最终的个性化检索系统的性能提高了3.8%.
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| 关 键 词： | 个性化信息检索 用户新兴趣发现 TextTiling算法 动态阈值 检索兴趣转移 |
Research on Personalized Information Retrieval Based on User's New Interest Detection |
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| Zou Bowei,Zhang Yu,Fan Jili,Zheng Wei,Liu Ting.Research on Personalized Information Retrieval Based on User's New Interest Detection[J].Journal of Computer Research and Development,2009,46(9). |
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| Authors: | Zou Bowei Zhang Yu Fan Jili Zheng Wei Liu Ting |
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| Affiliation: | Information Retrieval Laboratory;Harbin Institute of Technology;Harbin 150001 |
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| Abstract: | An important characteristic of next generation search engine is personalization.Personalized information retrieval(PIR) focuses on users.It captures users' interest in different kinds(explicit,implicit interest and interest of similar users).These information of users are integrated and used to improve the result of information retrieval system.Personalized information retrieval can grasp the users' retrieval intention and find personalized results.The authors propose the new interest detection task,which i... |
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| Keywords: | personalized information retrieval users' new interest detection TextTiling algorithm dynamic threshold search interest change |
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