Symbol k
k+1 means one index position after k. In the article, use the nearby sentence to see what each position counts.
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in which generation k+1 sees n samples drawn from its immediate predecessor and nothing else . The original data are gone. No filter selects among the samples. The lineage is single. Under those conditions, degradation compounds because there is no channel by which an error introduced at generation k can ever be corrected.
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Equation 5 · Data & Training
Training on Your Own Output: Synthetic Data and What It Does to a Distribution
This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.
in which generation k+1 sees n samples drawn from its immediate predecessor and nothing else . The original data are gone. No filter selects among the samples. The lineage is single. Under those conditions, degradation compounds because there is no channel by which an error introduced at generation k can ever be corrected.
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