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With the development of the Internet, e-commerce industry rises rapidly. Online shopping becomes more and more convenient and fast. However it is very difficult for consumers to find satisfied commodity because of abundant and mixed commodity. Especially when people purchase the items which they are not familiar with or consume in a strange place. The study of the recommended system is to figure out...
A logical data petri net (LDPN), a logical data workflow net (LDWN) and a collaborative logical data workflow net (CLDWN) are represented. They are improved formal models extended with data variables, guards and the output condition expressions based on our previous models. Data variables are used to represent data. Guards are used to indicate the additional constraint related to data except for a...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.