Privacy & cookies

Updated 18 October 2026. This notice covers semantic.observer and its public project sites, including bkg.semantic.observer and its bkg.ai.wu.ac.at mirror. Dobriy AI operates the service; see our legal identity and contact details and general privacy policy.

Your choice

Essential storage supports sign-in, security, organisation selection and interface preferences. Optional audience analytics is off until you choose “Allow analytics”. Declining does not limit graph access. Your choice applies to Semantic Observer and its public subdomains and is remembered for 180 days. The WU mirror remembers a separate choice on its own domain. You can change it or withdraw consent at any time using Cookie settings.

Optional Matomo analytics

With your consent, we use the Dobriy AI hosted Matomo instance at matomo.dobriy.ai to understand which pages are useful and improve the service. It receives the site hostname and page path, visit time, browser, device and language information, a pseudonymous visitor cookie and the referring website’s origin. IP addresses are masked before storage. We do not send account identifiers, question text, SPARQL queries, URL query parameters or fragments to analytics. We do not enable advertising, cross-domain link tracking, session recordings or heatmaps.

The Matomo script and tracking endpoint are contacted only after analytics consent. Consent is the basis for this optional processing. Detailed analytics logs are scheduled for deletion after 180 days; aggregate reports after 25 months. Withdrawing consent stops future tracking and removes analytics cookies in this browser. It does not automatically erase previously collected reports.

Cookies and local storage

Name	Purpose	Lifetime
observer_consent	Essential: your analytics choice and its version, shared across semantic.observer subdomains.	180 days
Sign-in and organisation cookies	Essential: secure account sessions, authentication checks and selected workspace. Identity provider cookies are described by Dobriy Account.	Session or the configured account expiry
Interface local storage	Essential preferences such as collapsed navigation and graph view settings.	Until cleared in your browser
_pk_id.*	Optional Matomo pseudonymous visitor identifier.	180 days
_pk_ses.*	Optional Matomo visit session.	30 minutes

Analytics cookies are shared only within semantic.observer; the WU mirror uses cookies scoped to its own host. Browser controls may shorten their lifetime. If cookies are blocked, we cannot remember your choice. Do Not Track and Global Privacy Control signals prevent analytics in this integration.

Service operation and graph data

Hosting and security logs, account processing and requests needed to run the service are separate from optional analytics. Public graphs contain sourced research information with provenance; this is not visitor tracking. Private workspace data remains governed by its access controls. Please see the general privacy policy for service providers, your applicable rights and the full account-processing notice.

For access, correction, deletion or a privacy question, contact office@dobriy.ai. You may also contact your competent data protection authority. Where analytics records cannot be linked to an identifiable person, we may be unable to locate an individual record without additional information.