22 active vehicle_sensIT 2014-01-29T18:59:31Z **Author**: M. Duarte, Y. H. Hu **Source**: [original](http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets) - 2013-11-14 - **Please cite**: M. Duarte and Y. H. Hu. Vehicle classification in distributed sensor networks. Journal of Parallel and Distributed Computing, 64(7):826-838, July 2004. This is the SensIT Vehicle (combined) dataset, retrieved 2013-11-14 from the libSVM site. Additional to the preprocessing done there (see LibSVM site for details), this dataset was created as follows: -join test and train datasets (2 files, already pre-combined) -relabel classes 1,2=positive class and 3=negative class -normalize each file columnwise according to the following rules: -If a column only contains one value (constant feature), it will set to zero and thus removed by sparsity. -If a column contains two values (binary feature), the value occuring more often will be set to zero, the other to one. -If a column contains more than two values (multinary/real feature), the column is divided by its std deviation. public 2014-01-29T18:59:31Z Sparse_ARFF 403 https://www.openml.org/data/download/52260/phpNzIybr vehicle_sensIT 0 Public Y 1