等式约束的一种降维运算的信赖域方法

本文给出了解决等式约束问题的一种信赖域算法。算法用Byrd和Omojokun方法计算试探步 ,但在计算试探步时采取了降维的方法。在不要求约束条件的梯度是列满秩的条件下证明了算法的全局收敛性。

DESIGN OF MULTI-SERVICE SDH NETWORKS: FORMULATION AND HEURISTICS

Multi-service SDH networks support both packet- and circuit-switched traffic. Optimal design of such a network means to guarantee the circuit connections and configure a logical packet-switched topology with lowest congestion. This letter first formulates the problem as a mixed integer linear programming, which achieves optimal solution but has high computation. Then a heuristic algorithm is proposed to yield near-optimal solution efficiently. Performance of the algorithm is verified by an example.

十年铸圣剑

这个世界上没有包治百病的灵丹妙药,也没有一成不变的篮球必杀技,即使是最接近"飞人"乔丹的科比,也不能一味吃老本。事实上,自1996年进入NBA联盟以来’科比就不断地修炼自己的篮球技术,适时打造自己新的必杀技。