The proceeding of the HAIS 2020 conference are available in the following link:
https://link.springer.com/book/10.1007/978-3-030-61705-9
Using the links to springer available in this website you are granted free access for a period of 4 weeks (November 6 – December 6, 2020).
You can found the individual links of each paper together with the corresponding video presentation here.