Longsheng Cai

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With the prosperity of e-commerce, the recommendation service rises rapidly due to its significant performance on promotion of consumer satisfaction level and sales. On one hand, it helps the consumer to find the suitable products in a much easier way. On the other, it explores the potential need of the consumer therefore steps up the deal. In order to make(More)
Rapid development of electric cars has raised a problem of charging batteries of them. As for the owner of the charging machines, how to make the charging jobs' schedule more efficient and more profitable is worthy of concern. Both cost related goals and operation related goals are expected to be satisfied simultaneously. This paper considered a(More)
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