What does the document type identifier D stand for? "Dataset" type of literature. ?

File type is a kind of identification used to identify various file carriers, which is convenient for us to classify and manage files. In academic research, we often need to use various types of documents, such as periodical papers, reports, conference papers, books and so on. In order to accurately identify and classify these files, we usually use the file type identification system.

A data set is a special type of literature, and it is a collection of related data, which can be different types such as numbers, images, audio and video. The main purpose of data set is to facilitate users to process, analyze and study data, so it usually contains some metadata, such as data title, data format, data volume, data source and so on.

Therefore, in the document type recognition system, the data set is identified as D. When we see a document with a document type of D, we can know that it is a data set, and we can further study and use it according to its metadata and content. At the same time, we can also adopt corresponding data processing and analysis methods according to the characteristics and requirements of data sets, so as to better mine and utilize the information in them.