serving.py 文件源码

def latent_perplexity(self):
        """Compute perplexity = exp(entropy) of latent variables.

        Perplexity is an information theoretic measure of the number of
        clusters or latent classes. Perplexity is a real number in the range
        [1, M], where M is model_num_clusters.

        Returns:
            A [V]-shaped numpy array of perplexity.
        """
        result = self._ensemble[0].latent_perplexity()
        for server in self._ensemble[1:]:
            result += server.latent_perplexity()
        result /= len(self._ensemble)
        return result