Use sweep algorithm to build initial solutions, and then, improve the solutions by 3 local search algorithms, such as 2-opt, 1-exchange, cross heuristics.
通过扫描算法构建初始解，应用2优化、1交换、交叉算法3个邻域搜索算法优化初始解。
If you opt to download the file, skip to Step 2.
如果您选择下载该文件，则跳过第2步。
Integers stand for role types: 1 (No action user), 2 (Opt-in user), 3 (Contributor), and 4 (Opt-out user).
整数代表角色类型：1(无动作用户)、2 (Opt - in用户)、3(贡献者)和4 (Opt - out用户)。
In Belgium, which adopted a similar presumed-consent system 12 years ago, less than 2% of the population has decided to opt out.
比利时12年前也采取了类似的“假定捐献人同意”的办法，只有2%的人决定不捐献。在美国，还有一个更为复杂的问题。
Bigger Banks with more sophisticated risk-modelling and risk-management systems can opt for what Basel 2 calls the "internal ratings-based approach", or IRB.
而风险模型和风险管理系统较为复杂的大银行则可以选择协议规定的“内部评级法”，或者简称为“IRB”。
The least expensive MBA is $999, while the most expensive iPad 2 is only $829. And most consumers, of course, opt for the even cheaper 16GB iPad 3G for $629 or the Wi-Fi only version for $499.
最便宜的MBA售价999美元，而最贵的iPad2仅售829美元，当然，绝大多数消费者选择的是售价更低的16GBiPad3G （629美元）或只有Wi-Fi 的版本（499美元）。
The complexity of the 2 -opt algorithm for the capacitated vehicle routing problem (CVRP) was analyzed in this paper.
分析了需求不可分割带能力约束的车辆路径问题(cvrp)的2 - OPT算法计算时间的平均复杂度。
The complexity of the 2 -opt algorithm for the capacitated vehicle routing problem (CVRP) was analyzed in this paper.
分析了需求不可分割带能力约束的车辆路径问题(cvrp)的2 - OPT算法计算时间的平均复杂度。
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