| 一种海量文本的动态索引方法 |
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| 引用本文： | 马乐,王力.一种海量文本的动态索引方法[J].北京师范大学学报(自然科学版),2009,45(2). |
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| 作者姓名： | 马乐 王力 |
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| 作者单位： | 1. 华南理工大学广州汽车学院,510800,广州;中国农业大学工程学院,100083,北京
2. 长春税务学院,130117,长春 |
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| 基金项目： | 山东省自然科学基金资助项目(Y2007G19) |
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| 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.
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| 关 键 词： | 动态文档集 索引构建 索引维护 |
DYNAMIC INDEXING FOR LARGE-SCALE COLLECTIONS |
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| MA Yue,WANG Li.DYNAMIC INDEXING FOR LARGE-SCALE COLLECTIONS[J].Journal of Beijing Normal University(Natural Science),2009,45(2). |
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| Authors: | MA Yue WANG Li |
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| Abstract: | 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. |
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| Keywords: | dynamic collection index construction index maintenance |
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