Sampling does not confirm that the data of the paper is untrue, but only returns and modifies the papers with doubtful data. Generally speaking, the falsification of scientific research data is not easy to be found, because many experiments are accidental, which is of little significance to the verification of the data itself, but obviously tampered or wrong data can be found and requested to be modified, which is the significance of paper sampling.

Papers are often used to refer to articles that conduct research in various academic fields and describe academic research results, which are referred to as papers for short. It is not only a means to discuss problems in academic research, but also a tool to describe academic research results in academic exchanges. Including academic papers, graduation papers, dissertations, scientific papers, achievement papers and so on.