Name 'v' is not defined when trying to use StudentT distribution

vanko · August 23, 2021, 10:36pm

Thank you for your help.

vanitoz/Bayesian-GLM-and-Multivariable-Linear-Regression/blob/main/MLR_Starkist.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "0ab9c7db-20b0-4cd6-9aa2-9ec472db6eed",
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "WARNING (theano.tensor.blas): Using NumPy C-API based implementation for BLAS functions.\n"
     ]
    }
   ],
   "source": [
    "import pandas as pd\n",
    "import numpy as np\n",
    " \n",

This file has been truncated. show original

My target variable - TOTAL_CONV.
I started with Regular Multiple Linear Regression - no luck at all.

Then Bayesian with pymc3 (likelihood - Normally distributed) - ppc gives me negative results which is not acceptable

Then Changed Likelyhood function to LogNormal Distribution and Beta(slope) to HalfNormal and it looks better. Results are reasonable and positive.

Now I’m trying to Do StudentT or InverseGamma for Likelihood and it gives me:
There were 5 divergences after tuning. Increase target_accept or reparameterize.

How do I check accuracy of My models?
Thank you for your help

Topic		Replies	Views
Mixture of Multivariate Student-T Questions	1	812	November 7, 2018
Can't recover the scale parameter in Student's T model Questions	3	694	October 6, 2017
How to create Non-Central Student's T distribution and what priors to use with the distribution? Questions	10	1941	June 14, 2020
pm.HalfStudentT.dist() failing to give correct shape v5 bug	6	379	April 7, 2023
HalfStudentT distribution for the Likelyhood. The derivative is zero problem Questions	10	1263	September 23, 2021

Name 'v' is not defined when trying to use StudentT distribution

Related topics