Various embodiments of the invention determine whether paths of a first graph satisfy a constraint based on a plurality of sub-graphs of the first graph. To construct the model, the process obtains global positioning system logs of geographical locations collected over time and identifies stay points representing locations visited by an individual user. Platform operational data is communicated between the platform processor and the at least one subsystem via the first and second wireless transceivers. The fluid conduit is disposed along an inner surface of the drum. g, into a term that has a more descriptive meaning in the target language.