The data annotator is equivalent to the "editor" on the Internet, and is responsible for categorizing, organizing, correcting and annotating a large amount of data such as text, images, voice, video, and so on, using some data annotation tools. Classification labeling: Classification labeling is our common labeling. Generally from the established labeling to select the data corresponding to the label, is closed set. Marking frame labeling: Marking frame labeling in machine vision is to select the object to be detected. Area labeling: Compared with the labeling of the frame, area labeling requires more accuracy. Stroke point labeling: some of the characteristics of the detailed requirements of the application often need to stroke point labeling.

Big data (bigdata), or huge amount of information, refers to the amount of information involved in the scale is so large that it can not be through the mainstream software tools, in a reasonable period of time to achieve capture, management, processing, and organization to help business decision-making for a more positive purpose of information.