You can download several hours of training data for all competition categories here. Along with the training data, we provide the respective sensor information and a file containing the expected results. You can use the results file to assess the accuracy of your algorithm and to improve things accordingly. A detailed description of the format and all the data fields is provided here.
Note that the training data is provided exactly in the same format as the evaluation data will be provided on the competition day. Please preapare your algorithms such that they can handle this format. The evaluation data sets will also have roughly the same size and coverage as these training data sets.