# The Decision Head

Source: https://dinand.com/research/decision-head/
Author: Dinand Tinholt

> A self-hosted typed-question service for governed workflow control: executive briefing, paper and blog post.

Research · A three-part publication

# The Decision Head

A self-hosted service that answers the typed questions inside a governed workflow with a calibrated probability, tested in two registered rounds and rescored by an independent party.

![Headline results: 0.728 for the open head on 794 fresh cases against 0.566 for the rule table, 0.650 on a second process, and 3.1 seconds median response in fast mode.](https://dinand.com/research/decision-head/figures/executive-kpis.png)

Start with the executive briefing for the business case, read the paper for the method and every number, or the blog post for how it started. The code is on [GitHub](https://github.com/dtinholt/decision-head).

Executive briefing23 Sep 2026

### [The Open Decision Head](https://dinand.com/research/decision-head/executive/)

The business case: what a self-hosted decision head offers a governed process, what the experiment showed and what it costs.

[Read the executive briefing ](https://dinand.com/research/decision-head/executive/)

Paper23 Sep 2026

### [The Decision Head: A Self-Hosted Typed-Question Service for Governed Workflow Control](https://dinand.com/research/decision-head/paper/)

The full write-up: the service, the two registered rounds, the results against five pre-registered hypotheses, and the limits.

[Read the paper ](https://dinand.com/research/decision-head/paper/)

Blog post23 Sep 2026

### [Building a Jev Lookalike in One Evening](https://dinand.com/research/decision-head/blog/)

How it started: building a lookalike of a vendor’s typed-question service in one evening, and what the first round got wrong.

[Read the blog post ](https://dinand.com/research/decision-head/blog/)

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