| Summary: | 碩士 === 淡江大學 === 資訊管理學系 === 87 === We have developed a Visual Mobile Agent System, VMAS. Different from other mobile agent systems,
VMAS provides not only agent transmission scheme and execution environment but also a visualized
agent constructor, MABuilder. With the help of MABuilder, the construction and delivery of mobile
agents are greatly simplified, so that the users can create their own mobile agents without deeply
programming techniques.
Moreover, for the itinerary scheduling of mobile agents, we have developed a hybrid scheduling method,
which compromise the feature of static scheduling [22] and dynamic scheduling [17], in order to find a low-
cost migration path. Considering the changing environment on Internet, the hybrid method applies TSP and
greedy algorithm alternately in accordance with the prepared cost functions. Besides, the possibly visited
nodes of mobile agents are classified into essential and non-essential, so that the scheduling process can be
further improved. The experimental result indicates that the proposed hybrid method can effectively reduce
the execution time by an average of 38.76% and lower the execution prices by an average of 49.86%.
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