9. In a computing environment, a system comprising: a segmentation mechanism configured to separate GPS data into a plurality of segments; a feature extraction mechanism configured to extract features for respective segments; and an inference model configured to use at least some of the features extracted for respective segments to infer a transportation mode for respective segments.
11. The system of claim 9 , the inference model comprising a decision tree classifier, a Bayesian Net inference model, or a support vector machine inference model, or any combination of a decision tree classifier, a Bayesian Net inference model, or a support vector machine inference model.