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Source of truth for [HDTwin](https://hdtwin.eu) public documentation.

The latest version is published at https://docs.hdtwin.eu/ and is authored using the docsy templa for HUGO system an deployed with GitLab pages

The latest version is published at https://docs.hdtwin.eu/ and is authored using the [Docsy](https://www.docsy.dev/) theme for Hugo, deployed with GitLab Pages.

### Run Development Server

To start the local Hugo server with live reload:

The site is automatically built and deployed to **GitLab Pages** via the `.gitlab-ci.yml` pipeline upon pushing to the `main` or `master` branch.

## Atttribution

## Attribution

HDTwin is a Trade Mark of LinkedData.Center.

(C) 2026 By LinkedData.center

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---

title: HDTwin documentation

description: HDTwin documentation portal

title: HDTwin Documentation

description: Official documentation for the HDTwin opinion-gathering platform.

hide_feedback: true

cascade:

  type: docs

---

HDTwin is a revolutionary opinion gathering platform that uses **Human Digital Twins** to supercharge traditional market and social research. By leveraging AI-powered synthetic focus groups, HDTwin provides faster, scalable, and unbiased insights, transforming the way organizations understand public opinion and group dynamics.

{{< blocks/cover title="HDTwin Documentation" image_anchor="top" color="primary" height="min" >}}

<p class="lead mt-4">

HDTwin is an opinion-gathering platform based on <strong>Human Digital Twins</strong>:

AI-powered synthetic panels that make market and social research faster, scalable, and unbiased.

</p>

## [Deliberation process]({{< ref deliberation >}})

Perform a new deliberation process about a topic, using a panel of Human Digital Twins

<a class="btn btn-lg btn-light me-3 mb-3" href="{{< relref "/user" >}}">

  User Guides <i class="fas fa-book-open ms-2"></i>

</a>

<a class="btn btn-lg btn-outline-light mb-3" href="{{< relref "/compliance" >}}">

  Compliance &amp; Legal <i class="fas fa-scale-balanced ms-2"></i>

</a>

Key Features:

- **Consensum Detection**: Automatically identify areas of agreement even in highly divisive topics.

- **Bias Sterilization**: Remove implicit biases from AI models to ensure neutral and objective results.

- **Unlimited Scalability**: Move from small focus groups to panels of thousands without increasing costs or time.

- **Motivated Opinions**: AI agents provide the "why" behind their choices, offering explainable and actionable data.

- **Explainable AI (XAI)**: Full transparency into how results are generated, complying with modern AI standards.

{{< /blocks/cover >}}

{{% blocks/section color="white" %}}

<div class="row justify-content-center">

## [Compliance]({{< ref compliance >}})

HDTwin is committed to maintaining the highest standards of data privacy, ethical artificial intelligence, and regulatory compliance. Our platform is built on a "Compliance by Design" principle, ensuring that our innovative use of neuro-symbolic AI to create Human Digital Twins (HDT) aligns with global best practices and emerging regulations:

- GDPR

- EU A.I. Act

- Etic

- Privacy

<div class="col-md-4 mb-4">

<div class="card h-100 shadow-sm">

<div class="card-body">

<h3 class="card-title"><i class="fas fa-comments me-2 text-primary"></i>Run a deliberation</h3>

<p class="card-text">Load a panel of Human Digital Twins into <strong>HDTwin Council</strong>, start a simulated focus group, and read the analysed report.</p>

<a href="{{< relref "/user/deliberation" >}}">HDTwin Council guide <i class="fas fa-arrow-right ms-1"></i></a>

</div>

</div>

</div>

<div class="col-md-4 mb-4">

<div class="card h-100 shadow-sm">

<div class="card-body">

<h3 class="card-title"><i class="fas fa-toolbox me-2 text-primary"></i>Build a panel</h3>

<p class="card-text">Turn source research data into a validated panel of synthetic personas with the <strong>HDTwin studio</strong> framework — for certified System Integrators.</p>

<a href="{{< relref "/user/studio" >}}">System Integrator guide <i class="fas fa-arrow-right ms-1"></i></a>

</div>

</div>

</div>

<div class="col-md-4 mb-4">

<div class="card h-100 shadow-sm">

<div class="card-body">

<h3 class="card-title"><i class="fas fa-shield-halved me-2 text-primary"></i>Compliance by design</h3>

<p class="card-text">GDPR, EU AI Act, ethics and bias mitigation: how HDTwin aligns with European regulation and responsible-AI best practices.</p>

<a href="{{< relref "/compliance" >}}">Compliance overview <i class="fas fa-arrow-right ms-1"></i></a>

</div>

</div>

</div>

</div>

{{% /blocks/section %}}

{{% blocks/section color="light" %}}

## Where to start?

- **New to HDTwin?** Begin with the [Product Guides]({{< relref "/user" >}}) overview — it explains what a panel is and how Council and studio fit together.

- **Have a panel file?** Go straight to [Running a deliberation]({{< relref "/user/deliberation" >}}).

- **Building panels from research data?** Read the [HDTwin studio System Integrator guide]({{< relref "/user/studio" >}}).

- **Unfamiliar with a term?** Check the [Glossary]({{< relref "/user/glossary" >}}).

{{% /blocks/section %}}

---

title: "Compliance & Legal"

linkTitle: "Compliance"

description: "How HDTwin aligns with data privacy, AI regulation, and responsible-AI best practices."

weight: 10

hide_feedback: true

cascade:

  type: docs

---

HDTwin is committed to maintaining the highest standards of data privacy, ethical artificial intelligence, and regulatory compliance. Our platform is built on a "Compliance by Design" principle, ensuring that our innovative use of neuro-symbolic AI to create Human Digital Twins (HDT) aligns with global best practices and emerging regulations.

HDTwin is committed to the highest standards of data privacy, ethical artificial intelligence, and regulatory compliance. The platform is built on a **Compliance by Design** principle: the use of neuro-symbolic AI to create Human Digital Twins is aligned with European regulation and global best practices from the ground up.

This section collects the policies and statements that govern the use of the platform:

| Document | What it covers |

|---|---|

| [Privacy Policy (GDPR)]({{< ref "gdpr-policy" >}}) | What personal data we collect, how we use it, and your rights under GDPR |

| [Cookie Policy]({{< ref "cookie-policy" >}}) | The cookies used by this site and the application, and how to control them |

| [EU AI Act Compliance]({{< ref "eu-ai-act-compliance" >}}) | HDTwin's risk classification and transparency obligations under the EU AI Act |

| [Terms of Service]({{< ref "terms-of-service" >}}) | The contractual agreement governing use of the HDTwin platform |

| [Logo & Copyright Usage]({{< ref "logo-usage" >}}) | Rules for using HDTwin branding and intellectual property |

| [Ethics & AI Safety]({{< ref "ethics-and-bias" >}}) | Bias sterilization, explainability, and human oversight commitments |

Key principles, in brief:

- **GDPR** — personal data is processed transparently, and synthetic personas are designed so that individual data is not reconstructible from their outputs.

- **EU AI Act** — HDTwin is classified as a low-risk AI system and fulfils the applicable transparency obligations.

- **Ethics** — bias sterilization, explainable AI, and human oversight are built into the platform.

- **Privacy** — data protection and anonymization are enforced throughout the panel lifecycle.