This paper mainly takes data storage , update and query as emphases for implementation of xml storage management system , and the research topic lies on xml storage and index structures 本文从数据存储与更新、数据查询的角度来考虑系统的实现,研究重点放在数据存储和数据索引两方面。
To maximize the efficiency of lookups , only a subset of the tokens in each row in the table is indexed in the inverted index structure that the fuzzy lookup transformation uses to locate matches 若要最大程度提高查找效率,请以模糊查找转换查找匹配项时所用的倒排索引结构仅对表内每行中的一个令牌子集建立索引。
We also explore memory management in the application of our index structure . finally , we show experimentally that our index can be built effectively with sequences whose index size exceeds the available ram 在最后的实验部分中,使用本文的索引结构和建立方法建立了比内存更大的索引,并在时间和空间上都获得良好的效果。
The main work of this paper is as the following : designing precept of the key of and realizing it ; improving arithmetic of similarity ; importing index structure and the tactic of the two level searching 本文的主要工作如下:设计词语权重的计算方法,并给出实现方案;句子相似度算法的改进;索引和二级检索策略的引用。
Instead of constructing a b - tree structure based on a value stored in a particular row , msftesql builds an inverted , stacked , compressed index structure based on individual tokens from the text being indexed Msftesql不是基于某一特定行中存储的值来构造b树结构,而是基于要索引的文本中的各个标记来创建倒排、堆积且压缩的索引结构。
A mechanism of video indexing as well as its setting up algorithm based on inverted index : in this algorithm , the author designs an efficient index structure that can better contain features of media data contents 提出一种基于倒排索引的视频索引机制及其索引建立算法:根据上面的描述结果,设计了一种基于倒排索引的视频索引机制及其索引建立算法。
2 xu j , zheng b , lee w - c , lee d l . d - tree : an index structure for planar point queries in location - based wireless services . ieee trans . knowledge and data engineering tkde , 2004 , 16 : 1526 - 1542 在本文中,作者提出了一种基于广播的位置相关数据发布机制,其目标是减少最近邻居查询nearest neigbour query和区域查询range query的协调时间和访问时间。
Proposing the multilevel indexing structure and algorithm that can effectively handle the huge user - profile files , and adopts the model of knapsack problem to solve the problem for providing suitable volume of information to users 提出了可以高效处理大量user - profile文件的多级索引结构及算法,用背包问题模型来解决给用户提供恰当数量信息的问题。
Searching in high - dimensional spaces : index structures for improving the performance of multimedia databases . acm computing surveys , 2001 , 33 : 322 - 373 . 2 guttman a . r - tree : a dynamic index structure for spatial searching 本文试图将高维空间中的每个点对应的两种距离尺度通过线性组合的方式表达成复合距离尺度,从而能够较好地缩小查询空间,提高查询效率。
This paper analyses indexing object , content modeling , indexing structure and indexing model , and discusses on this basis some of the problems that exist in the video structuring , the organization and indexing of video documents 本文分析了视频信息的索引对象、内容建模、索引结构和索引模型,并在此基础上对视频信息的结构化、视频文档的组织和索引中存在的问题进行了探讨。