The standard pre/post cutoff check cannot separate memorization from recency, and a single external reference is needed to measure and adjust for temporal leakage.
Table 4 is the map: each theoretical claim of Sections 3 to 5 and the experiment whose headline result carries it
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Temporal Leakage in LLM Backtesting: Measurement, Validation, and Adjusted Scores
The standard pre/post cutoff check cannot separate memorization from recency, and a single external reference is needed to measure and adjust for temporal leakage.