As follows:
In modern times, literature refers to articles and books with historical value or important books and materials related to a certain subject. With the development of modern network technology, literature retrieval is more accomplished by computer technology. Refers to the document form that has not been officially published or formed into a formal carrier. Such as letters, manuscripts, meeting minutes, notes, etc.
Features: objectivity, fragmentation and immaturity. Generally, it is obtained by oral conversation, visiting exhibitions and attending reports. , not only has certain value in content, but also can make up for the time-consuming shortcomings of general public documents from the objective formation of information to public dissemination.
Refers to the original documents without any processing, such as experimental records, manuscripts, original audio recordings, original video recordings, conversation record, etc. Zero-level documents play an important role in the preservation of original documents, the verification of original data and the verification of original ideas (owners). The method of literature retrieval by using computer technology and modern retrieval means such as CD-ROM and Internet.
Computer information retrieval, like manual retrieval, should be regarded as a basic skill of future scientific and technological personnel, and the training and cultivation of this ability is extremely important for scientific and technological personnel to adapt to the future society and cross-century scientific research. A researcher who is good at obtaining documents from electronic information systems must have more chances of success than those who do not have this ability.
The American periodical POV, which reports the new lifestyle, also lists interactive network retrieval experts as one of the top ten hot jobs in the future. All these situations show that computer literature retrieval is becoming more and more important, and it is worth paying attention to this technology. Generalized retrieval includes two processes: information storage and retrieval. Information storage is to collect a lot of disorderly information.
According to the appearance characteristics and content characteristics of information sources, through sorting, classification, concentration, indexing and other processing, it will be systematized, and a database or retrieval system with retrieval function will be built according to certain technical requirements for people to retrieve and use. And retrieval refers to the use of compiled retrieval tools or retrieval systems to find out specific information that meets the requirements of users.