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Affichage des articles du octobre, 2025

Show the student_t(20, 0, 2) in brms prior in R

 Here is to show the prior student_t(20, 0, 2) from brms in R: # Parameters df <- 20     # degrees of freedom mu <- 0      # mean (location) sigma <- 2   # scale # Define x range (say, ±4 standard deviations) x <- seq(mu - 5*sigma, mu + 5*sigma, length.out = 1000) # Student-t density y <- dt((x - mu) / sigma, df = df) / sigma # Plot plot(x, y, type = "l", lwd = 2, col = "blue",      main = "Student-t(20, 0, 2)",      xlab = "x", ylab = "Density")