Overview
SynLab-EV is an individual evidence verification challenge built from a fictional English laboratory corpus. Participants predict a claim label and cite sentence-level evidence from the released corpus.
Competition
Each test claim must be classified as SUPPORTED, REFUTED, or
NOT_ENOUGH_INFO. For supported and refuted claims, submissions should include the evidence
sentences that justify the prediction.
The public leaderboard is scored on the public split only. Private scores are computed server-side and remain hidden until the final reveal.
Evaluation
The final public score combines label macro F1 and evidence F1. Submit predictions through the Submission page; only valid JSONL files are added to the public leaderboard.
Participation
This competition is strictly individual. Use the assigned ID to log in, submit one prediction file at a time, and review your own submission history from the Submission page.