| 基于总线桥协议的异构机群并行虚拟机的构造 |
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| 引用本文： | 金利杰,张建军,李未.基于总线桥协议的异构机群并行虚拟机的构造[J].软件学报,1997,8(6):417-424. |
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| 作者姓名： | 金利杰 张建军 李未 |
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| 作者单位： | 北京航空航天大学计算机系,北京,100083;北京航空航天大学计算机系,北京,100083;北京航空航天大学计算机系,北京,100083 |
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| 基金项目： | 本文研究得到国家863高科技智能计算机主题、航空科学基金和国家博士后科学基金资助. |
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| 摘 要： | ＢＢＰ＿ＰＶＭ是为北京航空航天大学计算机系基于总线桥协议的异构可扩展并行计算机群系统ＢＢＰ＿ＳＰＣ（ｂｕｓｂｒｉｄｇｅｐｒｏｔｏｃｏｌ－ｓｃａｌａｂｌｅｐａｒａｌｅｌｃｏｍｐｕｔｅｒ）研制的ＰＶＭ版本．ＢＢＰ＿ＰＶＭ以总线桥多机互联协议的消息传递层子协议（ＢＢＰ＿ＭＰＬ）为虚拟机内各处理机间的通讯协议．ＢＢＰ＿ＭＰＬ是在ＢＢＰ可靠链路的基础上实现的精简和可靠的机间通讯协议，ＢＢＰ＿ＭＰＬ的采用有效地降低了通讯过程中报文应答、重发和动态缓冲区管理的开销．ＢＢＰ＿ＰＶＭ与ＰＶＭ３．３．４及其以上版本兼容．
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| 关 键 词： | 总线桥多机互联协议 精简通讯协议 可扩展并行计算机群 并行虚拟机 |
| 修稿时间： | 1996/6/11 0:00:00 |
ROUGH SETS BASED APPROACH FOR MULTIVARIATE DECISION TREE CONSTRUCTION |
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| JIN Li-jie,ZHANG Jian-jun and LI Wei.ROUGH SETS BASED APPROACH FOR MULTIVARIATE DECISION TREE CONSTRUCTION[J].Journal of Software,1997,8(6):417-424. |
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| Authors: | JIN Li-jie ZHANG Jian-jun and LI Wei |
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| Affiliation: | Articial Intelligence Laboratory\ Institute of Automation\ The Chinese Academy of Sciences\ Beijing\ 100080 |
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| Abstract: | In this paper, the core of condition attributes with respect to decision attributes in rough sets theory is used for selection of attributes in multivariate tests. A new concept of generalization of one equivalence relation with respect to another one is introduced and used for construction of multivariate tests. The comparison between multivariate decision tree and univariate decision tree is done through an example. The results show that the former is more simple than the latter. The basic comparison among several multivariate decision trees is fulfilled. |
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| Keywords: | Bus bridge protocol reduced communication protocol scalable parallel computer cluster parallel virtual machine |
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