unicorn-eval 1.1.1

Evaluation and adaption method for the UNICORN Challenge

🧪 UNICORN Evaluation Toolkit

Welcome to the official evaluation repository for the UNICORN Challenge — a benchmark for foundation models in pathology, radiology, and medical language processing. This repository provides the official evaluation code and a library of adaptors used to turn frozen features into predictions in vision tasks.

🚀 Challenge Overview

The UNICORN Challenge evaluates how well foundation models generalize across multiple modalities with minimal task-specific supervision:

• 🧠 Language and Vision-Language tasks: your model directly outputs predictions.
• 👁️ Vision tasks: your model outputs features. These are then converted to predictions using adaptors — lightweight models like k-NN, linear classifiers, or shallow MLPs.

We provide a few built-in adaptors, but you're highly encouraged to propose your own!
We maintain the full list of adaptors available on the Supported Adaptors page.

🧩 Contributing a Custom Adaptor

Have a better idea for how to turn features into predictions?

You’re welcome to contribute a custom adaptor! Here's how:

1. Add your adaptor to src/unicorn_eval/adaptors/.
2. Inherit from one of the base adaptor classes in base.py.
3. Open a pull request with:
   • Your adaptor code
   • A short description
   • A unique name (we’ll include your team name in the adaptor name to ensure you receive credit).

✅ Once accepted, your adaptor becomes selectable at submission time — and your team gets full recognition when it’s used!

💡 Keep in mind: we prioritize originality. If your adaptor is too similar to an existing one, it may not be accepted — so submit early and make it your own!

📦 Adaptors vs. Algorithms: What's the Difference?

In vision tasks, submissions consist of:

• A feature extractor (your algorithm)
• An adaptor (used to turn features into predictions)

You can experiment with different adaptors on top of the same algorithm without using up your submission slots.
Want to try a different adaptor? Send us a request by email, we’ll run the new adaptor strategy for you on top of the existing features. Requests should be submitted via email using the provided template (to be shared soon).

In language and vision-language tasks, the algorithm outputs predictions directly, so no adaptor is needed.

Summary

Modality	What You Submit	Are Adaptors Used?	Submission Limit Applies To
Vision	Algorithm (feature extractor) + Adaptor	✅ Yes	Algorithm only
Language	Algorithm (predictive)	❌ No	Algorithm
Vision-Language	Algorithm (predictive)	❌ No	Algorithm