Please note: Access to the main WWW2018 conference is not included in the rates quotes above. Access is available for DH2018 delegates to attend the WWW2018 keynote talks on Wednesday 25th and Thursday 26th for the special rate of EUR90. Registration fees are in Euros, VAT included (20% French VAT). Full tickets include: access to all 3 days of DH2018 + PhD track on Monday 23 April, coffee breaks and lunches, ACM proceedings (electronic format), conference brochure, DH2018 Gala Dinner on the evening of Tuesday 24 April. At least one of the authors of accepted papers and posters/demos must purchase a FULL 4-day conference ticket in order to be included in the conference proceedings. One day tickets include: access to DH2018 for the day the ticket is valid, coffee breaks and lunch, ACM proceedings (electronic format). One day tickets do not include the DH2018 Gala Dinner. A ticket for the Dinner can be purchased separately for EUR75. Visa invitation letters can be requested at the time of registration.