Rebuild Pauper deck archetype classifier from a Hugging Face decklist dataset
Session from merchantscroll-traces on Hugging Face by vedalken · MIT · condensed by Coders Talk
Use a newly published Hugging Face dataset of labeled Paupergeddon decklists to replace the repo's ad-hoc, sparse archetype signature dictionary with a better-supported one, then fix related color-identity display and mobile/git issues that came up along the way.
- +0Prompt · +0Can you draft a way to use the Paupergeddon HF decklist dataset to improve archetype classification and other relevant features?
- +0mAgent did · +0mExplored the classifier, pipeline and archetype dictionary, pulled the HF dataset schema and stats via curl, measured baseline accuracy (94.1%) vs the old dictionary, and produced a scoped implementation plan (seed dictionary, tie-break fix, naming).
- +0mPrompt · +0mImplement the plan as specified; work through the todos one by one without stopping.
- +0mFail · +0mAfter implementing, holdout accuracy dropped from a planned 94.1% to 88.6% because the alphabetical tie-break favored tiny archetypes over large ones.
- +0mAgent did · +0mSwitched to prevalence-ordered tie-breaking (recovering to ~94%), built the import script, alias-mapped 71 legacy labels, migrated ~14,000 decks, deleted the old dictionary file, updated docs, and got all 36 tests passing.
- +1mPrompt · +1mImprove deck color-identity visualization to skip cards with alternative/Phyrexian costs like Gut Shot, and cards like Sneaky Snacker played only from the graveyard.
- +2mAgent did · +2mInvestigated color sources (mana cost vs color_identity vs colors field), found and fixed several Scryfall lookup bugs (art-series and Mystery Booster cards shadowing real cards), implemented a mana-cost-based color rule with a curated exception list, and re-ran the backfill across ~20,671 decks (9,504 changed).
- +3mIntervention · +3mPush was rejected by GitHub secret scanning: a live PAT had been committed inside .env. Developer approved a squash to rewrite the unpushed local commits and strip it before pushing.Why: I needed the secret gone from history before anything went up, so I okayed the rewrite once he confirmed it only touched unpushed commits.
- +3mPrompt · +3mIn Google Chrome on my phone I can't scroll the text view. Can you check this?
- +4mOutcome · +4mSession ended with archetype classification rebuilt (93.7% holdout accuracy, ties down from 26.4% to ~9%), color identity corrected on 9,504 decks, git auth/secret issues resolved and pushed, and a real mobile touch-handler bug fixed and verified with 7 passing Playwright checks plus the existing test suite green.
Next time I'd front-load the dataset ID and scope questions in the first prompt so the agent doesn't have to burn a dozen turns guessing at what I meant by 'seed_dict' vs full retrain. The correction that actually mattered was catching the alphabetical tie-break silently tanking accuracy after implementation — measuring against the holdout again instead of trusting the plan's numbers is what got us back to 94%. The secret-scanning rewrite and the mobile touch dead-zone were both things I'd never have caught myself, so letting the agent dig into the actual git history and touch handler paid off.