DOI (Digital Object Identifier) is a unique identifier composed of numbers and letters, which is used to identify digital resources such as electronic documents, books, articles, pictures, audio and video. DOI is managed by the International DOl Foundation, and its purpose is to facilitate users to quickly find and locate digital resources on the Internet.
In papers, DOI is usually used to identify a specific academic document, including journal papers, conference papers, books and so on. Through DOI, readers can quickly find the detailed information of this document on the Internet through a special DOI parser, including the author, title, periodical, publication date and so on. Therefore, DOI has become one of the widely used identifiers in academic circles, which can help authors and readers to manage and access academic resources more conveniently.
Part of DOI
DOI consists of two parts: prefix and suffix, separated by "/". The prefix consists of two parts, one is the directory code, and all DOI directories are "10". That is, all DOI codes begin with "10".
The other is the registration agency code. Any organization or unit that wants to register DOI can apply for registration agency code from IDF. Suffix is the only suffix under a specific prefix, which is assigned by the registration authority to ensure its uniqueness. The suffix can be any alphanumeric code, and its coding scheme is completely specified by the registration agency itself. The suffix can be machine code or existing specification code, such as ISBN number or ISSN number.