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RIKYU account application system Terms of Service

RIKEN
RIKEN Center for Computational Science (R-CCS)
Enacted July 6, 2026

This is an English translation of the Japanese terms of service and is for informational purposes only.

These terms of service (hereinafter referred to as the "TOS") stipulate usage conditions of the online service (hereinafter referred to as the "service") for “RIKYU” (AI for Science Supercomputer) provided by the RIKEN Center for Computational Science (hereinafter referred to as the "the center"). In accordance with the TOS, registered users (hereinafter referred to as the "users") may use this service.

Article 1 Use

1. The TOS shall be applied in all cases that involve the use of this service between the User and the Center.

2. Aside from these TOS, the Center may have usage rules and other stipulations (hereinafter referred to as the "individual regulations") in relation to this service. Regardless of their titles, those individual regulations shall be composed of a portion of these TOS.

3. If there are discrepancies with the stipulations of these TOS and those of the individual regulations from the preceding article, the stipulations of the individual regulations shall take precedence unless otherwise specified in the individual regulations.

Article 2 User registration

1. In order to use this service, those who wish to register for the service and the representative of the group that uses “RIKYU” to which the registrant belongs (hereinafter referred to as the "Project") must consent to these TOS, and make an application for user registration as stipulated by the Center. When the application has been granted approval by the Center, user registration shall be completed.

2. If the Center determines that any of the following apply to the user registration applicant, their user registration application shall not be approved, and there shall be no obligation to disclose that reason.

A) Falsified information when applying for user registration

B) Application by a person who has violated these terms of service

C) The Center has determined the user registration to be insufficient

Article 3 Management of account and other related information

1. The User shall be responsible for appropriately managing their account for this service and other related information.

2. Under no circumstances are users permitted to transfer, lend, or provide to a third party their account or other related information. When a user logs in to this service with a account and other related information that match registered information, the Center shall deem it as use by the person with the registered account.

3. The center may record the usage history of various functions provided in this service for the purposes of service improvement, support operations improvement, and other purposes necessary for operation.

4. The Center shall not take responsibility for damages that occur due to use of the account or other related information by a third party, excluding intentional or serious fault by the Center.

Article 4 Prohibitions

Upon using this service, users must not engage in the following acts.

1. Behavior that violates laws and public order and morals

2. Behavior related to criminal offenses

3. Behavior that violates copyright, trademark rights, and intellectual property rights included in this service and this service content.

4. Behavior that destroys or obstructs the Center, other users, or other third party servers or network functions.

5. Acts in which information obtained by this service is used for commercial purposes.

6. Behavior that is likely to cause interfere with the operation of the Center service.

7. Acts that result in unauthorized access or attempts at unauthorized access

8. Acts to collect or amass the personnel information of other users or attempting to do so.

9. Acts to use this service with improper intentions in mind.

10. Behavior that causes detriment, damage, or discomfort to other users of this service or other third parties.

11. Acts to impersonate another user

12. Behavior in relation to this, which directly or indirectly provides benefits to antisocial forces in relation to the Center's services.

13. Any other acts or behaviors that the Center deems as inappropriate

Article 5 Suspension of services

1. The Center may suspend or interrupt the provision of all or a portion of this service without advance notification to the user in the event of one of the following causes.

A) When conducting maintenance or updates of the service's computer system.

B) When it is difficult to provide the service due to earthquakes, lightning, fire, power failure, or other natural disasters.

C) When computers or communication lines stop working due to an accident.

D) When is has been determined that it is difficult for the Center to provide this service.

2. The Center takes no responsibility for any detriment or loss incurred by suspending or interrupting provision of this service.

Article 6 Usage limitations and registration cancellation

1. The Center shall place usage limitations on all or a portion of this service without advance notification to the user or may cancel one's registration as a user in the event that any of the following apply.

A) When any of the TOS articles have been violated

B) When it has been determined that the registration was falsified.

C) When there is no response for a certain period of time to communication from the Center.

D) When the service has not been used for a certain period of time.

E) When the Center determines that use of the sesrvice is not appropriate.

2. The Center takes no responsibility for losses incurred by users due to acts carried out by the Center in accordance with this Article.

Article 7 Withdrawal

Users shall be able to withdrawl from this service by the withdrawl procedures stipulated by the Center.

Article 8 Warranty disclaimer and exclusions

1. This Center does not guarantee, either explicitly or implicitly, that there are no actual or legal defects in this service. (Defects include safety, reliability, accuracy, integrity, validity, suitability for a specified purpose, security-related defects, errors or bugs, infringement of rights, etc.)

2. The Center shall not take responsibility for any losses incurred to users due to this service, excluding any event caused by intentional or gross negligence by the Center.

3. The Center takes no responsibility for transactions, communications or disputes that occur between users or users and third parties in relation to this service.

Article 9 Changes to service details, etc.

User consent shall be given for changes, additions, or abolitions to the service content with an announcement in advance to users by the Center.

Article 10 Changes to Terms of service

1. It shall be possible for the Center to make changes to the TOS without the consent of individual users in the following cases.

A) When changes to the TOS conform to general public interest.

B) When the changes to the TOS are not contrary to the service's terms of service, as well as when there is a necessity for change, equivalency of content after the change, and other changes that are reasonable in light of the circumstances.

2. The Center will notify users in advance of its intent to change the terms of service when making changes to the terms of service in accordance with the preceding paragraph and will notify users of the content in the changed terms of service along with the date in which the changes will take effect.

Article 11 Treatment of personal information

The Center shall appropriately handle personal information obtained through use of this service in accordance with "On the Handling of Personal Data for “RIKYU” Users."

Article 12 Notifications and contact

Notifications and contact between users and the Center shall be conducted following methods stipulated by the Center. In accordance with methods separately stipulated by the Center, as long as there is no notification of change from the user, the Center will regard the currently registered contact as valid and send notification or contact to said address. By transmitting the notification, the Center shall consider these to have reached the user.

Article 13 Prohibition of release of rights and duties

Users may not transfer all rights or duties or a portion of those, based on the status under the terms of service or the TOS, to a third party.

Article 14 Governing laws and jurisdiction

1. Interpretation of the TOS shall be following the governing Japanese laws.

2. In the event of any disputes that arise in relation to this service, the jurisdiction of the location of the Center shall be the exclusive jurisdiction.