港口的拖轮调度过程是一类带特殊工艺约束的并行多机调度问题。
The port tugboat operation scheduling is a kind of parallel machines scheduling problem with special process constraint.
本文用TS方法解决最小化拖期任务数的并行多机调度问题，并同目前最好的启发式作了比较，大量实验表明了TS方法的有效性。
In this paper, we solve parallel machine minimizing the number of tardy jobs problem using ts, and compare it to the best heuristic found so far, computational results show its efficiency.
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