Perplexity of fixed-length models PPL(perplexity) is one of the most common metrics for evaluating models. If we have a tokenized sequence $X = (x_{0},x_{1},\dots x_{t})$, the perplexity of X is \(P P L ( X ) = e x p \left\{ - \frac { 1 } { t } \sum...
[Read More]