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International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3

Yi Xie
Yi Xie
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The Signed Directed Graph (SDG) can describe the complicated cause and effect relation and contain mass underlying information. Qualitative simulation can also help to analyze the reason for leading abnormity of material supply process and the result brought by the abnormity. The principle of the qualitative simulation based on the SDG was researched; the qualitative models were founded using the simulation tool, the reason and result paths were got; the efficiency evaluation method using material supply process qualitative simulation was brought out; the strongpoint and shortcoming of SDG was analyzed.

The explosion of network information resources brings more difficulty for the grasp of information. To effectively control massive data and extract hot information, we designed hotspot-finding Algorithm about public opinion on network. The algorithm classifies the various categories by using the method of calculating their similarity of Centro, then detects hotspot from every category through the Centro comparison strategy and finally lists all the hotspots in every category according to the attentions they get. This provides an effective analysis for people to grasp public opinions on network.

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