<p>I believe <a href="https://arxiv.org/" rel="nofollow noreferrer">https://arxiv.org/</a> is the best source for scientific papers.<br> There are no particular datasets, but you can write a simple crawler and download articles for particular topics.</p>
In Natural language processing, how to find data set for scientific papers
<p>i'm new in data science and trying to make application that classify the scientific papers to (AI,Machine Learning, NLP,...) 
i spend a lot of time trying to find data set for scientific papers but not found.
any help to find the data set? </p>