The hierarchical model is one of the oldest and simplest database models. It organizes data in a tree-like structure, where each record has one parent record and zero or more child records.

For example, a new application, based upon new technology, might be used to gather up data from smartphones, tablets and the like. This new application, in all likelihood, will simply feed the ...

In order to share resources between the system and other information management systems of the distribution network, and make full use of the existing data of the distribution network, this paper ...

This paper uses structured variables such as social network data, weather, holidays, etc. to build a tourism demand forecasting model based on Gradient Boosting Regression Trees. At last, take Huang ...