Digital library is a product of high technology, and the integration of information technology plays a very important role in the construction of digital library. Specifically, it involves digital technology, very large-scale database technology, network technology, multimedia information processing technology, information compression and transmission technology, distributed processing technology, security technology, reliability technology, data warehouse and online analytical processing technology, information extraction technology, data mining technology, content-based retrieval technology, natural language understanding technology and so on. The meaning of digital library is very extensive. It is not a simple library homepage on the Internet, but a group of object-oriented, distributed and platform-independent digital resources. Broadly speaking, digital library includes all digital library resources: materials that have been digitally converted or originally published in electronic form, newly published or retrospectively processed; Various types of resources, including periodicals, reference books, monographs, audio-visual materials, etc. Various file formats, from bitmap pages to SGML-encoded special text files.
Basic composition of bit library
Digital resources with a certain scale and relatively independent content or theme; Network equipment and communication conditions that can be used for wide area network (currently Internet) services; A set of software system that conforms to the operation standards and norms of digital library is mainly divided into five modules: information acquisition and creation, storage and management, access and query, dynamic publishing and authority management, which are similar to the functions of the current traditional library integrated book management system: digital library maintenance management and user service.
A summary of foreign Bit library research
At present, all developed countries in the world have invested a lot of resources to step up the construction of digital libraries. For example, the NSF/A8PA/ NASA Digital Library invested by the National Natural Science Foundation of the United States will cover large-scale document libraries, space cinema libraries, geographic map sources and audio-visual resource libraries, and the United States will also invest 30 million US dollars to build an American digital library alliance project, focusing on information on American historical and cultural achievements. Japan will complete the Kansai Pavilion project of the National Library of Japan in 2002, and plans to become the largest digital library in Japan and the document center in Asia. All these show that developed countries attach great importance to the construction of digital libraries as an important part of future social and cultural construction.
Summary of China Bit Library Research
Relevant parties in China are also actively preparing and starting the work of digital libraries. Some research institutes and universities are stepping up the research on key technologies of digital libraries, and some libraries have also started experiments. The first digital library forum in the Asia-Pacific region initiated by IBM has been established in Beijing, and 17 universities, libraries and museums from China, South Korea, Japan, Chinese mainland, Hongkong and Taiwan Province Province, including Peking University, Tsinghua University and Beijing Library, have become the initiating members of the forum. Asia-Pacific Digital Library Forum is a non-profit organization, whose purpose is to promote the application of digital library technology and standards by universities, museums and other cultural collection institutions in the Asia-Pacific region. The forum will cooperate with relevant international standardization organizations to formulate unified standards related to digitalization, storage and access to multimedia information through the Internet. The forum will also focus on the interconnection among its members and with other digital cultural collections in this century.