Are twelve records twelve independent examples?

Six entities, two sessions each: 12 records. Each entity repeats one signature and label. Both splits contain six records. A lookup predictor memorizes training signatures; unseen signatures receive class 0. Only the split changes. This diagnoses overlap, not a realistic classifier.

• Small deterministic teaching fixture; no random sampling or population inference.
• The explorer shows reference inputs. Each run report includes its own inputs and calculated evidence.

Counts exclude the row identifier. Duplicate counts are extra occurrences after the first. Feature duplicates ignore labels and experimental conditions. — means a statistic is undefined or not applicable.

Row

Stable record identifier, not a model feature.

Entity

Entity

Signature

Signature

Class

Class

Split

Split