Metrics
Intuitively, the launch of a mobile App depends on the context of a user and also the network status.
For instance, a person wants to relax herself during her leisure time. She may either watch videos if her mobile phone attached to a Wi-Fi access point, or play a local game on mobile phone if only mobile network available.
The prediction of mobile App usage needs both the user context information and also the network information. In this paper, we use three important metrics to present the user context: time, location and the last used App; we use two metrics to present the network information: network type and network speed.