Ship and explain the threshold prediction game

A shippable lab artifact includes: how to run it, the metric result (confusion matrix sums to 5; accuracy matches hand count), the failure you can still reproduce (threshold outside 0..1, or reporting accuracy without TP/FP/TN/FN), the security gate for treating the five-row accuracy as a production SLA, and a rollback note. The user decision it supports remains: choose a cutoff that balances errors without claiming generalization from five rows.

print({'artifact':'threshold tuner','proved':['confusion on 5 rows'],'unproved':['out-of-sample accuracy'],'owner':'ml-lab'})

Expected evidence: prediction-game ship note. Store this beside the fixture version so scores remain meaningful after content changes in prediction-game.

State operating limits for the threshold prediction game in plain language: fixture size, offline vs live dependencies, and what would require a new eval set. Shipping prediction-game is honest scoping, not maximal confidence language.

Fill this table in your notes for the threshold prediction game:

• Proved on 5 (truth, score) pairs: …
• Unproved beyond the fixture: …
• Metric that blocks release: confusion matrix sums to 5; accuracy matches hand count
• Failure still reproducible: threshold outside 0..1, or reporting accuracy without TP/FP/TN/FN
• Security gate: treating the five-row accuracy as a production SLA
• Rollback: …

Ship the narrative only when the unproved list is honest. Reviewers trust narrow claims that support choose a cutoff that balances errors without claiming generalization from five rows more than maximal language that collapses under the first production oddity.

Hand your ship note to a peer and ask them to recreate a proved/unproved ship note with rollback without watching you type. If they cannot, your evidence is still tribal knowledge. Tighten the run command and the metric line until a stranger can validate the threshold prediction game against 5 (truth, score) pairs.

At the mastery and shipping stage for prediction-game, the job is narrower than finishing a product demo. You are creating one progressive evidence piece about 5 (truth, score) pairs that later pages inherit without redefining success. Keep that fixture small enough to inspect by hand, keep outputs copy-pasteable as text, and refuse to narrate this baseline as if it were a production SLA: confusion counts computed by hand at threshold 0.5.

For this page specifically, success looks like a proved/unproved ship note with rollback while still centering the user decision to choose a cutoff that balances errors without claiming generalization from five rows. If you cannot point to a file, command, or assertion that proves that for the threshold prediction game, stay on this page instead of advancing.

Confusion matrix glossary

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