Decoded Intelligence Signal
Time Series Cross-Validation
advanced
strategy
Verified: May 27, 2026Lexicon Core Definition
A model evaluation methodology that respects temporal ordering, using only past data to train and only future data to test, preventing the data leakage inherent in random K-fold cross-validation for financial time series.
Analysis Breakdown
A model evaluation methodology that respects temporal ordering, using only past data to train and only future data to test, preventing the data leakage inherent in random K-fold cross-validation for financial time series. Full explanation coming soon when Journey 23 content is ingested.