Search:

Type: Posts; User: Dilettante; Keyword(s):

Search: Search took 0.00 seconds.

  1. Re: The Brilliance of Norman Lloyd Johnson's Unbounded System

    Thanks Bill and edina for listening to my spiel. I'm done for now, hopping off of the soapbox.

    If anyone has questions, please let me know! No dumb questions, I'll try to answer anything...
  2. Re: The Brilliance of Norman Lloyd Johnson's Unbounded System

    It's time to finish it. First, we'll need some helper functions:


    sum_log_cosh <- function(m) {
    sum(log(cosh(m$residuals)))
    }

    gasinh <- function(x, xi = 0, lambda = 1) {
    asinh((x -...
  3. Re: The Brilliance of Norman Lloyd Johnson's Unbounded System

    We're close to finishing, but we have to address another little tidbit first. How does the Johnson Su actually work? Let's take a look at its CDF:


    pjohnson <- function(q, gamma = 0, delta = 1,...
  4. Re: The Brilliance of Norman Lloyd Johnson's Unbounded System

    Alright, joint normalization it is. But what is it?

    It's simply the process of applying normalization to 2 or more variables at the same time. Why do that? To linearize a model prediction! For two...
  5. Re: The Brilliance of Norman Lloyd Johnson's Unbounded System

    Slight detour, just for fun.

    Want to know what a linear model is? At least for two variables, it's actually really simple and plenty interesting (I still chew on how simple yet unintuitive this...
  6. Re: The Brilliance of Norman Lloyd Johnson's Unbounded System

    Let's knock this out. Fitting the Johnson Su to our `dist` variable.

    The good news? It's the exact same process as the above, we'll get a rough estimate of the parameters and then refine it:

    ...
  7. Re: The Brilliance of Norman Lloyd Johnson's Unbounded System

    Okay. Before we get too far into this project, we have to learn about numerical optimization. This is a huge topic, in part born out of a much forgotten but brilliant interdisciplinary field called...
  8. The Brilliance of Norman Lloyd Johnson's Unbounded System

    Oi!

    I've noticed that the forum has plenty of threads for reacting to content (X, Rumble, and YouTube) and relating over discussion topics, but I was surprised to find only a few threads devoted...
Results 1 to 8 of 8