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The current risk evaluation method general presumes mutually independent indexes at the same level and realizes class evaluation by 1 weighing sum and interval division of the results. But in reality the indexes on the same level are not mutually independent and the relation bet different indexes is not linear. Through nodes ordering and local scoring, the thesis tries to set up the bound dynamic...
This paper analyzes the features of multimedia data transmission for virtual class teaching system, and introduces the related multicast technology. Then it introduces a planning project of intra-domain and interdomain multicast network. Related experiments show that such a project can reduce the load of backbone net effectively and improve the utilization of network.
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