回溯(b a c k t r a c k i n g)是一种系统地搜索问题解答的方法。为了实现回溯,首先需要为问题定义一个解空间( solution space),这个空间必须至少包含问题的一个解(可能是最优的)。在迷宫老鼠问题中,我们可以定义一个包含从入口到出口的所有路径的解空间;在具有n 个对象的0 / 1背包问题中(见1 . 4节和2 . 2节),解空间的一个合理选择是2n 个长度为n 的0 / 1向量的集合,这个集合表示了将0或1分配给x的所有可能方法。当n= 3时,解空间为{ ( 0 , 0 , 0 ),( 0 , 1 , 0 ),( 0 , 0 , 1 ),( 1 , 0 , 0 ),( 0 , 1 , 1 ),( 1 , 0 , 1 ),( 1 , 1 , 0 ),( 1 , 1 , 1 ) }。
标签: 搜索
上传时间: 2014-01-17
上传用户:jhksyghr
LCD DRIVER AF-128 B
上传时间: 2014-12-22
上传用户:851197153
fbkldfmlb n/ovk,e vml bhdsrb mor brb n/sZPer b vk,epabho,l rnopazbhlrepofrt,epsho
标签: rnopazbhlrepofrt fbkldfmlb bhdsrb epabho
上传时间: 2014-01-25
上传用户:ANRAN
Transport format combination selection for compressed mode in a W-CDMA system
标签: combination compressed Transport selection
上传时间: 2013-12-18
上传用户:qilin
If we have two individually sorted vectors "a" and "b" but they are not sorted with respect to each other and we want to merge them into vector "c" such that "c" is also a sorted vector. Then c=mergesorted(a,b) can be used.
标签: sorted individually respect vectors
上传时间: 2015-09-23
上传用户:comua
use the matlab tool to do the mel analysis in the audio fingerprinting system.
标签: the fingerprinting analysis matlab
上传时间: 2013-12-27
上传用户:jeffery
In this paper, we describe the development of a mobile butterfly-watching learning (BWL) system to realize outdoor independent learning for mobile learners. The mobile butterfly-watching learning system was designed in a wireless mobile ad-hoc learning environment. This is first result to provide a cognitive tool with supporting the independent learning by applying PDA with wireless communication technology to extend learning outside of the classroom. Independent learning consists of self-selection, self-determination, self-modification, and self-checking.
标签: butterfly-watching development describe learning
上传时间: 2014-11-26
上传用户:waizhang
This is a boiler test system,has been use in factory
标签: factory boiler system This
上传时间: 2015-09-24
上传用户:许小华
EIA(ELECTRONIC INDUSTRIES ALLIANCE)标准文档EIA-CEA-861-B,A DTV Profile for Uncompressed High Speed Digital Interfaces。
标签: ELECTRONIC INDUSTRIES ALLIANCE EIA-CEA
上传时间: 2015-09-27
上传用户:hphh
区域增长的算法实现: 1)根据图像的不同应用选择一个或一组种 子,它或者是最亮或最暗的点,或者是位 于点簇中心的点 2...通过像素集合的区域增长 算法实现: 区域A 区域B 种子像素增长.3)增长的规则 4) 结束条件.
上传时间: 2015-09-30
上传用户:wcl168881111111