> ## Documentation Index
> Fetch the complete documentation index at: https://docs.signa.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Signa Research

> Studies measuring the accuracy of the data and computations behind the Signa API

Signa publishes research that measures, against independent ground truth,
the accuracy of the data and computations the API serves. Every study
follows the same discipline: samples are frozen before any comparison runs,
every number carries its sample size, every disagreement is investigated
and classified by cause, and defects found by a study are published with
results from before and after the fix.

Nothing in these reports has to be taken on faith. The rules under test are
inspectable through the API, and the measurements are reproducible with an
API key.

## Reports

<Card title="Deadlines You Can Docket Against" icon="calendar-check" href="/research/deadline-verification">
  Computed trademark deadlines verified against 300,000 register records
  across ten offices: 96.08 percent full-population exact agreement with
  office-published dates, with every disagreement investigated and
  classified.
</Card>

Further studies (coverage and freshness, classification accuracy, entity
resolution) are in preparation.