Target encoding
Target encoding: Encoding categories through target statistics estimated from data, often with smoothing for small groups. It should be computed within folds or out-of-fold to limit leakage. A global encoding can produce optimistic metrics. This perspective connects the definition with practical behaviour in artificial intelligence systems.
In italiano: Target EncodingLegge I · Embedding, feature e spazi vettorialiIt should be computed within folds or out-of-fold to limit leakage. A global encoding can produce optimistic metrics.