Keep Nearer Cells: A Buffer Allocation for GIS

机译：保持更近的单元格：GIS的缓冲区分配

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Navigation through cells references becomes a main feature in GISs (geographic information systems), and the geographical meaning among cells is not negligible. It is hard for traditional approache, for instances LRU, to cover all of such access patterns efficiently. To address this problem, we provide a new buffer allocation strategy KNC-D (Keep Nearer Cells by Distance) to take the reference information between cells in a GIS into consideration. For utilizing the reference information, we introduce a concept of "distance" between the cells which can be used as a measurement to deal with the issues of buffer allocation strategy. Based on the distance from the cell currently accessed to the other cells, KNC-D is able to keep a group of related cells together, and swap out those objects which are "far" from the cell being accessed currently. The simulation shows the efficiency of KNC-D in GIS accesses, comparing with other buffering strategies, based on several kinds of traversal access patterns.

机译：通过单元引用进行导航已成为GIS（地理信息系统）的一项主要功能，单元之间的地理意义不可忽略。传统方法（例如LRU）很难有效地覆盖所有此类访问模式。为了解决这个问题，我们提供了一种新的缓冲区分配策略KNC-D（按距离保持近距离的像元），以考虑GIS中像元之间的参考信息。为了利用参考信息，我们引入了单元之间的“距离”概念，可以将其用作度量标准来处理缓冲区分配策略的问题。根据从当前访问的小区到其他小区的距离，KNC-D能够将一组相关的小区保持在一起，并交换掉那些与当前正在访问的小区“相距较远”的对象。仿真表明，基于多种遍历访问模式，与其他缓冲策略相比，KNC-D在GIS访问中的效率更高。

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来源
《Finding new values and uses of information》|1994年|43-47|共5页
会议地点 Saitama(JP)
作者
Hanxiong Chen; Junichi Notoya; Nobuo Ohbo; Yuzuru Fujiwara;
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作者单位

Institute of Information Sciences and Electronics. University of Tsukuba, Japan;

Doctoral Program in Engineering, University of Tsukuba, Japan;

Institute of Information Sciences and Electronics. University of Tsukuba. Japan;

Institute of Information Sciences and Electronics. University of Tsukuba. Japan;

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会议组织
原文格式 PDF
正文语种 eng
中图分类情报学、情报工作;
关键词
GIS; buffer management; spatial data; distance;

机译：地理信息系统缓冲区管理；空间数据；距离;

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Keep Nearer Cells: A Buffer Allocation for GIS

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