Deep Learning, Artificial Intelligence, Llm, ChatGPT, Gpt 3.
curvature. DetectGPT is based on the hypothesis that samples from a source model pθ typically lie in areas of negative curvature of the log probability function of pθ, unlike human text. If we apply small perturbations to a passage x~pθ, producing ~x, the quantity log pθ(x) - log pθ(~x) should be