Grimoire
Tree — 07
metrics/2
data/1

Evaluation

What a number on a leaderboard is actually measuring, and the two failure modes that dominate: the benchmark leaked into pretraining, or the difference between two systems is inside the noise.

Three entries, none of them stubs.

Entries
07.1
Contamination Detection
n-gram and canary overlap tests between benchmark and pretraining data.
O(N)
07.2
Elo / Bradley-Terry Scoring
Latent-strength model fitted to pairwise preference outcomes.
O(P)
07.3
Perplexity
Exponentiated mean negative log-likelihood over a held-out corpus.
O(n)