目录摘要...................................................................................................................1Abstract...........................................................................................................2内容提要...........................................................................................................3研究背景及意义........................................................................................3国内外研究现状........................................................................................3本文主要工作............................................................................................5第一章绪论.....................................................................................................61.1推荐系统..............................................................................................61.2推荐系统的分类..................................................................................61.2.1基于协同过滤的推荐系统........................................................61.3协同过滤推荐系统的弊端..................................................................91.4本文主要工作......................................................................................91.5本文的组织结构..................................................................................9第二章基于局部敏感哈希的协同过滤算法...............................................112.1协同过滤推荐系统的计算效率........................................................112.2局部敏感哈希....................................................................................112.2.1核心思想..................................................................................112.2.2数学定义..................................................................................122.2.3实现方式..................................................................................122.3实验及分析........................................................................................152.4本章小结............................................................................................17第三章基于同态加密和局部敏感哈希的共享协同过滤算法...................193.1共享协同过滤算法............................................................................193.2Paillier同态加密算法........................................................................193.3算法流程............................................................................................203.4实验及分析........................................................................................243.5本章小结............................................................................................25第四章总结与展望.......................................................................................26鸣谢.................................................................................................................27参考文献.........................................................................................................28隐私保护的共享协同过滤算法研究摘要随着互联网和普及和电子商务的发展,推荐系统逐渐成为该领域的一个重要的研究内容,受到越来越多的研究者的关注。如今几乎所有大型电子商务网站都不同程度的提供了各种形式的推荐系统。协同过滤(CollaborativeFiltering,CF)算法是个性化推荐系统中诞生较早,较为...