Open Knowledge Maps
Open Knowledge Maps is a free online tool that can generate a knowledge map of a research topic. It shows the main areas in a field with relevant papers and concepts. See how it works from an example below:
PubMed comprises more than 26 million citations for biomedical literature from MEDLINE, life science journals, and online books. For more information please visit the PubMed website.
BASE provides access to over 270 million documents from more than 8,900 content sources in all disciplines. For more information please visit the BASE website.
Open Knowledge Maps is helpful to give us a head start on our scholarly search but it is not perfect. It uses the top 100 documents from the selected data source to create the map, which may miss important documents due to this restriction. The information quality would be affected by the algorithm, the scope of the data source, and the metadata quality. You are suggested to further make use of other databases to conduct a serious literature review for your assignment or research project.
To learn more about how Open Knowledge Maps works and its limitations, please refer to their FAQs page.