带权的m-DMATCHING和m-SETPACKING问题(m≥3)以前是用近似算法来求解的.本文首先根据参数计算理论对这两个带权问题进行了参数化定义,然后运用最新的着色技术和动态规划技术对带权的m-SETPACKING问题设计了一个时间复杂度为O*(12.8mk)的固定参数可解算法,接着在此基础上利用问题本身的结构特点对带权的m-DMATCHING问题提出了一个时间复杂度为O^*(12.8(m-1)k)的固定参数可解算法,表明带权的m-SETPACKING问题和带权的m-DMATCHING问题都是固定参数可解的.
The weighted m-D MATCHING and m-SET PACKING problems (m≥3) were solved by approximation algorithms in the past. In this paper, the parameterized versions of these problems are defined and their algorithms are studied. For the weighted m-SET PACKING problem, a parameterized algorithm of running time O^* (12.8^mk) is developed, which is based on the recently improved color-coding technology and dynamic programming. For the weighted m-D MATCHING problem, a more efficient parameterized algorithm of running time O^* (12.8^(m-1)k) is similarly presented through refining the techniques. It is concluded that the weighted m-D MATCHING and weighed m-SET PACKING problems are fixed-parameter tractable.