The link to the registraion is to the following webpage for the joint registration of ALT and DS 2017:

http://www.iip.ist.i.kyoto-u.ac.jp/alt-ds2017/registration.html.

The early registration deadline is 31 August 2017 and
the normal registration deadline is 6 October 2017.
For more information, please follow the above link.

Note that at least one of the authors for each accepted paper must register for the conference.