价值密度

对于0-1背包问题设计一种价值密度，并在此基础上提出求解0-1背包问题的混合遗传算法。

A value density is designed for 0-1 knapsack problem and on this basis , a bybrid genetic algorithm is proposed for solving 0-1 knapsack problem .

在建立了相关定理及定义的基础上，基于连续松弛条件下的价值密度贪婪准则，分别应用分枝定界算法、动态规划算法得到了该问题的资金分配最优策略。

On the basis of constructing theorem , lemma and definition for the portfolio , it obtains an optimal strategy for the problem with dynamic programming algorithm , branch and bound algorithm and greedy principle of valuable density .

林分价值的密度效应模型及其应用

A Model of the Density Effect of Stand Value and it 's Application

在太平洋岛民的饮食中，更多地食用当地种植的有营养价值、能量密度低的传统食品也很重要，Waqanivalu说。

Increasing the proportion of locally grown , nutritious and less energy-dense traditional foods in the diets of Pacific islanders is also essential , says Waqanivalu .