Submission Format

Required Output

Every submitted run must contain the following five elements.

1. Validity

Classify the causal explanation as:

• Valid: consistent with the available evidence

• Invalid: containing one or more unsupported, incorrect, or contradictory claims

2. Error Span

For an invalid explanation, identify the exact text span containing each error.

For a valid explanation, return “none” or the value specified in the official submission format.

3. Hallucination Type

Assign an official hallucination type to each identified error span.

4. Corrected Causal Explanation

Submit a clinically appropriate explanation that corrects the identified errors.

The correction must remain consistent with the evidence and must not introduce new hallucinations.

5. Confidence Score

Provide a confidence score from 0 to 1.

Uncertainty caused by limited, conflicting, or ambiguous evidence should be reflected in the confidence score.

Run Metadata

Each run must identify the evidence actually used:

• R — Report-only

• I — Image-only

• RI — Report-and-Image

A team may submit runs using one or more evidence combinations. The detailed file format and submission limits will be provided separately.