提出并研究、实现了基于用户偏好的垂直搜索算法(PVSA)。以领域特征为基本出发点,PVsA借助领域主题偏好向量、领域元数据权重因子、检索名词差异化、行业词典库更新等4项策略,有效地挖掘、表征用户的领域个性化偏好,以此为基础构建基于用户偏好的垂直搜索算法。实验结果表明了PVSA算法的有效性和可行性。
Personalized search and vertical search are receiving more and more attention of users. User preference-based vertical search algorithm (PVSA) is proposed in this paper. By focusing on domain characteristics, PVSA uses domain topic preference vector, domain metadata weight factors, the strategy of distinguishing weights of input terms, and industry lexicon update to mine different domain preferences of different users. Experimental results show that the proposed algorithm is feasible and effective in mining users' personal preferences.