基于位索引的多层次实例检索模型研究  

Research on Multi-layer Case Retrieval Model Based on Bitwise Indexing

作　　者：王珂[1] 廖文和[1] 郭宇[1] 刘金山[1] 

机构地区：[1]南京航空航天大学,南京210016

出　　处：《中国机械工程》2007年第16期1953-1956,共4页China Mechanical Engineering

摘　　要：通过对基于实例的推理技术、实例的检索策略及实例相似性的研究,提出了可应用于机械产品设计领域的多层次实例检索模型和基于位索引的检索算法。给出了实例检索模型的层次划分方法,分析了位索引的建立过程和通过相似度映射表来提高实例检索效率的原理,最后通过实例验证了该算法的简洁性和高效性。In view of the disadvantages of formerly retrieved model in feature extraction and retrieval efficiency,a multi-layer case retrieval model based on bitwise indexing was proposed,which selected the best matching case by describing case similarity comprehensively in multi-layer. A new retrieval algorithm based on bitwise indexing was introduced. The process of establishing dynamic index using bitwise operation and the principle of prestored similarity mapping list to enhance retrieval efficiency was analyzed. Finally,the conciseness and efficiency of this algorithm was proved by exam ples.

关 键 词：基于实例的推理 位索引 检索模型 实例检索算法 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程] TP391[自动化与计算机技术—控制科学与工程]