13. The system of claim 12 , wherein the at least one processor generates footprints by further determining association strength between the word type and the mapped location.
13. The system of claim 12 , wherein the at least one processor generates footprints by further determining association strength between the word type and the mapped location. 20. The non-transitory computer readable storage medium of claim 13 , further comprising: predicting location information for a new text message based on words in the new text message and the geospatial weights associated with words in the word set determined based on the localness of words.