Dynamic modeling of geospatial words in social media

1. A method of dynamically modeling geospatial words in social media, comprising:

receiving GPS annotated text data generated by a GPS-enabled device containing latitude and longitude coordinates;

generating a word set based on frequencies of words occurring in the GPS annotated text data;

partitioning locations by mapping GPS coordinates in the GPS annotated text data to a set of discrete non-overlapped locations;

segmenting a text stream contained in the GPS annotated text data into time windows;

generating footprints of locations in time windows;

determining geospatial weights associated with words in the word set based on localness of words determined based on the footprints;

dynamically integrating in geotagging by extracting words in a text message and determining scores associated with the set of discrete non-overlapped locations.

2. The method of claim 1 , further comprising:

sampling a fixed number of the time windows in the segmenting and the generating steps.

3. The method of claim 1 , wherein the generating footprints of locations in time windows comprises, for each GPS annotated text data in a time window, constructing a bipartite graph between a word type of the GPS annotated text data and a mapped location.

4. The method of claim 3 , wherein the generating footprints of locations further comprises determining an association strength between the word type and the mapped location.

5. The method of claim 4 , further comprising selecting a predetermined number of locations based on the association strength as the footprints, the footprints parameterized by associated word type, time window, and the predetermined number.

6. The method of claim 1 , further comprising predicting location information for a new text message based on words in the new text message and the geospatial weights.