Big data means that the data has to be online so that your data can be valuable for analysis or processing. A lot of data online after the analysis makes sense. May get the data you want, the movie a lot of this material, such as the search of faces, the location of people, the analysis of the flow of people, the status of the operation and so on are used. Now there are a lot of these applications, just a little less on the ground. Or to create value.