knapsack column generation 背包列生成
column generation algorithm 列生成算法
Column Generation Technique 列生成技术
In this paper, the mathematics model of two-dimensional Guillotine cutting-stock problem based on inventory is set up. To solve the mathematics model above, the iterative solving method through wiping off worse layout is put forward; On the base of the column generation formulas that are deduced to solve multi-material two-dimensional Guillotine cutting-stock model，the column generation algorithm is brought forward by using column generation technology; The solution of two-dimensional knapsack problem and one-dimensional knapsack problem is studied; The concept of the value of
给出了基于库存的二维Guillotine优化下料问题的数学模型，提出了一种新的求解方法——去差迭代求解法；引入了列生成技术，在推导多原材二维Guillotine优化下料模型求解的列生成数学形式的基础上，给出了列生成迭代求解算法，研究并分析了二维背包问题和一维背包问题的求解算法；提出了板材排样价值概念，建立了板材排样价值的估计方法；论文同时针对优化下料技术当前应用中存在的问题，提出了一种基于ASP（Application Services Provider）模式的多软件协同优化下料解决方法并给出了该方法基于Agent思想的具体实现技术。
参考来源 - 面向物料资源优化利用的产品设计系统与优化下料技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
These commands are used together during report generation to format the report based on column values.
在报表生成期间这些命令是一起使用的，以便基于列值对报表进行格式化。
Fred Pearce is author of The Last Generation: How nature will take her revenge for climate change (Eden Project Books) and writes a weekly greenwash column for environmentguardian.co.uk.
弗雷德·皮尔斯是《最后一代：自然将如何为气候变化复仇》(伊甸园计划书)的作者，为environmentguardian . co . uk的每周环保专栏撰稿。
Alternatively, you could define the primary key to use Identity value generation at the time you were defining the table and adding the primary key column itself.
您还可以选择，定义主键值，来在定义表格和添加主键值列本身时使用identity值生成。
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