vikingowl
69c6453e26
- Add confidence scale (0.95-1.00 / 0.70-0.90 / 0.50-0.70 / 0.00-0.50) with four annotated few-shot examples to the similarity system prompt - Add two Ronneburg real-world pairs to similarity.json: descriptive-prefix swap and low-trigram-overlap rename, both expected same=true
discovery-eval
CLI that grades discovery's AI-backed components against labelled fixtures. Two modes:
-mode similarity(default) —SimilarityClassifieron pair- labelled fixtures. Reports precision / recall / F1 / accuracy + a confidence calibration table.-mode category—ProviderLLMEnricher'scategoryoutput on row- labelled fixtures. Reports accuracy + a per-label confusion matrix.
File-based cache keeps reruns free. Each mode has its own cache key shape, so switching modes doesn't churn entries.
Run it
Similarity (default)
export AI_API_KEY=...
export AI_MODEL_COMPLEX=gemini-2.5-flash-lite
go run ./backend/cmd/discovery-eval \
-mode similarity \
-fixture backend/cmd/discovery-eval/fixtures/similarity.json \
-cache .eval-cache.json \
-threshold 0.8 \
-report eval-report.json
Exit code is 1 when F1 < threshold (0 = gating disabled).
Category
export AI_API_KEY=...
export AI_MODEL_COMPLEX=gemini-2.5-flash-lite
go run ./backend/cmd/discovery-eval \
-mode category \
-fixture backend/cmd/discovery-eval/fixtures/category.json \
-cache .cat-eval-cache.json \
-threshold 0.7 \
-report cat-eval-report.json
Category mode scrapes each row's quellen URLs live (first run only; cache
covers subsequent runs) and asks the LLM enricher to produce a category.
Normalised comparison: casing + German umlauts + the -märkte/-markt plural
drift are all treated as equal. Exit code is 1 when accuracy < threshold.
Extending the fixture
fixtures/similarity.json is hand-curated. Add pairs that exercise patterns
the classifier has gotten wrong, or edge cases the prompt documentation
mentions but we haven't tested. Prefer real crawler output (anonymised
if needed) over invented pairs — the model's failure modes on real data
are the ones that matter.
Keep pairs deterministic (don't include confidence bands or other
stochastic signals) and ensure each pair's note field explains the
edge case. When you change a pair's labels, purge the cache so the
classifier re-answers.
Cache
-cache .eval-cache.json stores verdicts by
sha256(name_normalized_a | stadt_a | year_a | name_normalized_b | stadt_b | year_b) + "|" + model.
Delete the file to force a full re-run. Changing the model string invalidates every entry automatically.
Atomic writes (temp file + rename) — a crashed run won't corrupt the cache.
Interpreting the output
- Precision is about false merges: how often does the classifier say "same" when it isn't? Low precision means auto-merge will fuse distinct markets — hard to recover from.
- Recall is about missed merges: how often does it say "different" when it should have said "same"? Low recall means operators review duplicate rows manually — annoying but safe.
- F1 balances both. The default gate threshold isn't set here — pick a number after an initial baseline run.
- Calibration tells you whether "90% confident" verdicts are actually correct 90% of the time. An under-calibrated model is worse than a less-accurate but well-calibrated one for downstream auto-decisions.
Out of scope for now
- Enrichment eval (category/opening_hours/description). Scoring fuzzy text outputs needs its own design; tracked for a future MR.
- CI wiring. Once we have a baseline F1 the harness can run in GitLab CI with a fixed threshold.