Like other methods of collecting market information, the literature investigation method also needs to establish a strict investigation plan to check the authenticity and availability of the documents used to ensure the systematicness and reliability of the investigation. But as an independent investigation method, it has its own inherent advantages.
The correlation is as follows
Verification of literature investigation methods;
Verification of the authenticity of (1) files is a very important task. The usual verification method is to look at the author, and to exclude the doubtful author or the literature of the exaggerated era.
(2) Document usability verification refers to checking the attributes of documents, especially for data documents, and checking whether the data metrics and grouping status meet the requirements of the survey content. If you need raw data, you should also know the expenses you need to pay in advance to prevent you from exceeding your ability to pay. The usability test of the document also includes the investigation of the timeliness and completeness of the document.
(3) The verification of the authenticity and availability of documents is the consideration of the availability value of the documents to be adopted according to the purpose of investigation. The basic characteristics of high-quality documents are truthfulness, novelty, completeness and accuracy.