一种海量文本的动态索引方法  

DYNAMIC INDEXING FOR LARGE-SCALE COLLECTIONS

作　　者：马乐[1,2] 王力[3] 

机构地区：[1]华南理工大学广州汽车学院,广州510800 [2]中国农业大学工程学院,北京100083 [3]长春税务学院,长春130117

出　　处：《北京师范大学学报（自然科学版）》2009年第2期134-137,共4页Journal of Beijing Normal University(Natural Science)

基　　金：山东省自然科学基金资助项目(Y2007G19)

摘　　要：研究海量文本动态索引的构造方法,通过对索引维护策略的研究和对比,设计了一个优化的索引模型,在保证检索效率的前提下,提供了实时索引的功能;提出了一种分代的动态索引构建方法,以减少索引合并代价,同时可以调节索引和检索的性能平衡,与以前方法相比,具有更高的性能和更好的规模可扩展性,并在理论和实践中验证了这种索引维护方法的高效性.Dynamic indexing for large-scale collections was compared, and a model for optimized index maintenance was designed. In the new model, real-time indexing was improved in index construction, with ensured search efficiency. The model also built index for dynamic collections, and used sub-indexing to reduce combination cost, with indexing and retrieval adjustable when needed. This model has higher performance and better scalability, and performed excellently in experiments when compared with previous methods.

关 键 词：动态文档集 索引构建 索引维护 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论] TP301.6[自动化与计算机技术—计算机科学与技术]