Fig. 5

Heatmap of dataset availability. The two heatmaps describing the problem of availability of the datasets used in sensor data quality literature. Both heatmaps show the number of available datasets, P against the total number of datasets, D used for method evaluation in the 57 selected papers where the number in each cell represents: a the number of papers that have used P publicly available datasets out of its D total number of datasets for method evaluation and b the average citation rate for the papers that have used P publicly available datasets out of its D total number of datasets for method evaluation