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perplexity.ai. Perplexity AI is an AI-powered research and conversational search engine that answers queries using natural language predictive text. Launched in 2022, Perplexity generates answers using sources from the web and cites links within the text response. [2] Perplexity works on a freemium model; the free product uses the company's ...
The perplexity is the exponentiation of the entropy, a more straightforward quantity. Entropy measures the expected or "average" number of bits required to encode the outcome of the random variable using an optimal variable-length code. It can also be regarded as the expected information gain from learning the outcome of the random variable ...
In April, Perplexity AI raised $62.7 million from. Since ChatGPT first launched in November 2022, major search engines have been trying to integrate AI into web search, and analysts have viewed AI ...
Perplexity makes money by offering a Pro version for $20 per month that allows users to pick from various large language models, among them OpenAI’s GPT-4, Anthropic’s Claude 2.1, or the ...
Mathematically, perplexity is defined as the exponential of the average negative log likelihood per token: = = (()) here is the number of tokens in the text corpus, and "context for token " depends on the specific type of LLM used.
Like a number of AI startups, Perplexity has managed to raise money in a tough environment. In 2023, $170.6 billion was invested across venture—that marks a decline of $71.6 billion from 2022 ...
(Reuters) -Japanese technology investor SoftBank Group Corp's Vision Fund 2 is investing between $10 million and $20 million in U.S. search startup Perplexity AI at a valuation of $3 billion ...
The inverse of the perplexity (which, in the case of the fair k-sided die, represents the probability of guessing correctly), is 1/1.38 = 0.72, not 0.9. This seems barmy to me. Inverse perplexity seems like a crazy thing. Perplexity is kind of like average list length in an underspecified input system. Inverse list length WTF?