cdsandvinyl-imbalance-sentmismatch-text-vocabdrift

Task gallery / Machine learning / Version 1

Reference solution (oracle): Pass
No-op resistance check: Pass
QA verdict: Not recorded
Aggregate eligibility: Eligible version

The task

Predict the star rating of CD and vinyl reviews. The data sits in /app/data as gzipped JSON lines with a codebook, small reference tables, and a sentiment word list. Train on the rated rows and score the held-out cohort, whose ratings are removed. The environment runs Julia offline with no Python data-science tools, so write your solution in Julia and install nothing. Ratings skew heavily to five stars, the vocabula…

Excerpt only; not a complete executable task specification. Task ID task_17155ef80fdd40ed · version 1. Selection status: not fully recorded.

Results by model and effort

This exact task version only. Every rate is passes / valid runs with a Wilson 95% interval; n≤2 remains counts only. Macro aggregation does not apply within a single task. Baselines are summarized in the quality gates, not ranked. A passed no-op resistance check means that doing nothing did not solve the task.

Current evidence

Model / effort	Verifier result [95% Wilson]	Diagnostic labels / valid	HARNESS_ERROR · excluded	Outcome classes
Claude Opus 5 · default (unverified)	2/2	2 / 2	0	GOOD_FAILURE: 0 BAD_FAILURE: 0 GOOD_SUCCESS: 2 BAD_SUCCESS: 0

Legacy evidence

Model / effort	Verifier result [95% Wilson]	Diagnostic labels / valid	HARNESS_ERROR · excluded	Outcome classes

Every recorded run

4 recorded trials, including controls. Diagnostic labels do not replace verifier reward. Labels and quality checks are source declarations, not independently attested here. Internal evidence remains private; a missing public URL is shown explicitly. Records with invalid or absent rewards are not scored.

Run / model	Date / source	Reward / eligibility	Diagnostic class / source	Resources	Evidence
`trial_31d625573fa74e33` nop@@	Oct 12, 2026 console	0 · valid	GOOD_FAILURE frozen-classifier	Tokens: — Turns: — Cost: —	Not publicly available
`trial_7148e30c514e40af` oracle@@	Oct 12, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: — Turns: — Cost: —	Not publicly available
`trial_59c1231b1da246c1` Claude Opus 5 · default (unverified)	Oct 12, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: 32,386 Turns: 28 Cost: $1.9423	Not publicly available
`trial_f71ce946fc9640d8` Claude Opus 5 · default (unverified)	Oct 12, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: — Turns: — Cost: —	Not publicly available