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The base of the logarithm need not be 2: The perplexity is independent of the base, provided that the entropy and the exponentiation use the same base. In some contexts, this measure is also referred to as the (order-1 true) diversity. Perplexity of a random variable X may be defined as the perplexity of the distribution over its possible ...
Perplexity measures how well a model predicts the contents of a dataset; the higher the likelihood the model assigns to the dataset, the lower the perplexity. In mathematical terms, perplexity is the exponential of the average negative log likelihood per token.
GPTZero uses qualities it terms perplexity and burstiness to attempt determining if a passage was written by a AI. [14] According to the company, perplexity is how random the text in the sentence is, and whether the way the sentence is constructed is unusual or "surprising" for the application.
Perplexity AI reportedly secured $500 million in its latest funding round this month. That puts the startup's valuation at $9 billion, tripling its worth within six months.
The CEO of Perplexity AI shared some principles that guided him as a startup founder. Aravind Srinivas talked about having "an extreme bias for action" in a recent talk at Stanford. He also said ...
Perplexity AI declined to comment. Perplexity has told investors it is looking to raise around $500 million in the new funding round, the Journal reported citing people familiar with the matter ...
Note that the context of the first n – 1 n-grams is filled with start-of-sentence markers, typically denoted <s>. Additionally, without an end-of-sentence marker, the probability of an ungrammatical sequence *I saw the would always be higher than that of the longer sentence I saw the red house.
Perplexity recently announced an experiment with advertising for its core search product in the form of sponsored “follow-up questions”—related questions that the AI system generates and ...