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Problems <br />
• Predict the percolation transition point (Predictability, 可 预 测 )<br />
– Purpose:<br />
• epidemiology and rumor spreading: to know when to make vaccinations to<br />
avoid the large scale epidemic or rumor spreading. <br />
• currency circulation: to help government make policies to avoid inflation. <br />
• online information diffusion: to master the rules of online information diffusion<br />
• Predict how fast is the outbreak at percolation transition point<br />
or whether the transition is controllable. (Controllability, 可<br />
调 控 ) <br />
– Purpose:<br />
• epidemiology: to estimate how many people need to be vaccinate. <br />
• online information diffusion: to estimate the strength of a piece of information
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