1, sequential search method
It is generally used for comprehensive retrieval of major topics, development history of various disciplines and research topics of emerging disciplines.
2. Backward search method
The purpose is to obtain the latest literature information published recently. It is the most commonly used method for general researchers. When confirming whether an achievement is innovative, it is also suitable to use backward inquiry method.
3. Spot check method
Spot check focuses on searching for a certain period of time and is mostly used to retrieve special investigation reports.
4, retrospective method
The retrospective method can use the new references attached to the original documents for retrospective retrieval; You can also use a specially compiled citation index for retrospective retrieval.
Extended data:
The origin of information retrieval:
Information retrieval originated from the reference service and abstract index of the library. It first developed in the second half of19th century, and by the 1940s, indexing and retrieval had become an independent tool and user service project of libraries. With the advent of the first electronic computer in the world in 1946, computer technology gradually entered the field of information retrieval, and was closely combined with information retrieval theory.
From 1960s to 1980s, with the promotion of information processing technology, communication technology, computer and database technology, information retrieval developed rapidly in the fields of education, military and commerce, and was widely used.