Research on mining frequency path in compressed path data

The volume of path data of moving items collected by RFID readers is massive and hard to be searched in the modern logistic management system. Using path code (denote as pid in this paper) to replace the path data can not only compress the volume of data, but also decrease the storage space greatly, and make the path searching more easily. Base on pid, mining frequency pid instead of mining frequency path, can also decrease the storage space, and increase the speed of mining algorithm. This method can be used in mining frequency path in the cube which used in moving items applications, such as FlowCube.