I'm working on a systematic mapping in computer science subject. In the step of "Identification of Research", I choose to work with these digital libraries : IEEE Xplore, Scopus, Web of Science, ACM DL, Science Direct. My problem is that I found in total 60.930 results after doing all possible filters (ACM DL and Science Direct had the big part of this number and do not offer an interesting filters).
Is it normal to work with this number ? Or should I eliminate some libraries ? Or other solution ..? Thank you all.
pleasecheck the link
https://www.researchgate.net/.../The-stages-of-the-systematic-mapping-process-152_fig1
You probably have found all papers that contain "Identification of research". Also you will find some overlap between the databases you consulted. Just Scholar alone promised me 15 600 references. The high number of returns is because almost every researcher is using that phrase!
You would need about 10 good papers for an undergraduate project, 100 for a Masters and 1000 for a PhD. So you have under-specified your search criteria. You need to be more specific in your search criteria: For Example: Electric vehicle charging point location -- While this gives even more results (277 000!), they can be quickly filtered down with clever key phrases: E.g.: Electric vehicle charging point location "Identification of research" gives me 595 results, which you can easily fine tune, filter by eye, and manage in Qiqqa (http://www.qiqqa.com/Register/70557).
Nirmala S.V.S.G The link doesn't work for me, can you please repost it ? Thank you.
Ian Kennedy I'm a PhD student. In my search string I'm using 2 terms with their synonyms linked by OR and AND.
("Identification of research" is the 1st step in conducting the review process, which means collecting papers from a specific databases, and I'm not using it to search in the libraries). My problem is especially in Science direct, where I found 39,219 results and I can't restrict my search in computer science field only; and also ACM DL (with 11,949 results).
I hope that my problem is clear now. Thank you for your help.
Linking keyterms with Ors and Ands can be problematic if not done correctly. Make your intentions very clear to the stupid machine by using parentheses. Also the rules change from database to database and from time to time.
At Science Direct, I recommend that you click on "Advanced search". Then click on Find out _more_. This is because Science Direct has changed the logic.
https://service.elsevier.com/app/answers/detail/a_id/25974/supporthub/sciencedirect/
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