To evaluate the information, the following criteria must be taken into account:
Relevance: Does the resource fit your search and topic?
Update: Is the date of the last edition or the latest modifications of the document indicated? Is this the latest version?
Reliability: Does the author's information is trustworthy and has been based on recognized sources? The following elements must be taken into account:
Precision : How is the subject treated? Is it well argued? Has it bibliography? Is the information objective or opinion?
Coverage: What is the scope of the document (geographical, temporal, etc.)?
To evaluate scientific publications bibliometric indicators are used, among others. These indicators vary according to whether an author, journal or other type of scientific publication is evaluated. For example, the h index for authors or the impact factor for journals.
Some official agencies request certain data to researchers to prove their scientific output.