Literature retrieval is the basic skill of scientific research, and reading literature is an important way for researchers to obtain scientific research information. The two most important indexes to evaluate the quality of literature retrieval are recall and precision.

Literature refers to books, periodicals and regulations with historical significance or research value. It is the final expression of scientific research and technological research achievements, and it is an important medium for people to acquire knowledge. Literature is very important to human civilization and social progress. Regardless of ancient and modern times, anyone engaged in scientific research needs to rely on relevant literature.