Patent attributes
Methods, systems, and tangible computer readable storage media for collecting data on a wireless device are disclosed. An example method includes generating a first hierarchical tree structure for a first wireless device metering event associated with a plurality of data attributes describing an occurrence of the first wireless device metering event associated with an application. The example method includes generating a second hierarchical tree structure for a second wireless device metering event associated with a plurality of data attributes describing an occurrence of the second wireless device metering event associated with the application. The example method includes linking a first lower level node of the first hierarchical tree structure to a second lower level node of the second hierarchical tree structure when a first data attribute associated with the first lower level node and a second data attribute associated with the second lower level node share a feature.