Posted by Brian Callander

SR2 Chapter 3 Medium

SR2 Chapter 3 Medium Posted on 5 April, 2020 by Brian Tags: statistical rethinking, solutions, grid approximation, posterior probability, posterior predictive probability, hpdi, binomial Category: statistical-rethinking-2 Here’s my solution to the medium … Continue reading →

SR2 Chapter 3 Hard

SR2 Chapter 3 Hard Posted on 5 April, 2020 by Brian Tags: statistical rethinking, solutions, grid approximation, posterior predictive check, posterior predictive distribution, map, binomial, hpdi Category: statistical-rethinking-2 Here’s my solutions to the … Continue reading →

SR2 Chapter 2 Hard

SR2 Chapter 2 Hard Posted on 1 March, 2020 by Brian Tags: statistical rethinking, solutions, conditional probability, counting, bayes rule, pandas Category: statistical-rethinking-2 Here’s my solution to the hard exercises in chapter 2 of McElreath’s … Continue reading →

SR2 Chapter 2 Medium

SR2 Chapter 2 Medium Posted on 29 February, 2020 by Brian Tags: statistical rethinking, solutions, conditional probability, counting, grid approximation Category: statistical-rethinking-2 Here’s my solutions to the medium exercises in chapter 2 of … Continue reading →

Speeding up Bayesian sampling with map_rect

Speeding up Bayesian sampling with map_rect Posted on 9 August, 2019 by Brian Tags: stan, map_rect, within-chain parallelisation, threading, ordinal regression Category: map_rect Fitting a full Bayesian model can be slow, especially with a large dataset. For … Continue reading →

Hierarchical Customer Lifetime Value

Hierarchical Customer Lifetime Value Posted on 5 May, 2019 by Brian Tags: customer lifetime value, recency frequency, hierarchical model, centred parameterisation, non-centred parameterisation, prior-predictive distribution, stan, e-bfmi, energy Category: … Continue reading →

BDA3 Chapter 1 Exercise 9

BDA3 Chapter 1 Exercise 9 Posted on 13 April, 2019 by Brian Tags: bda chapter 1, solutions, simulation, poisson process Category: bda3 Here’s my solution to exercise 9, chapter 1, of Gelman’s Bayesian Data Analysis (BDA), 3rd edition. There are solutions to … Continue reading →

Pareto-NBD Customer Lifetime Value

Pareto-NBD Customer Lifetime Value Posted on 6 April, 2019 by Brian Tags: customer lifetime value, pareto-nbd, smc Category: customer_lifetime_value Suppose you have a bunch of customers who make repeat purchases - some more frequenty, some less. There are a … Continue reading →

BDA3 Chapter 1 Exercise 3

BDA3 Chapter 1 Exercise 3 Posted on 31 March, 2019 by Brian Tags: bda chapter 1, solutions, hardy-weinberg principle Category: bda3 Here’s my solution to exercise 3, chapter 1, of Gelman’s Bayesian Data Analysis (BDA), 3rd edition. There are solutions to … Continue reading →

CIS Primer Question 3.4.1

CIS Primer Question 3.4.1 Posted on 15 February, 2019 by Brian Tags: CISP chapter 3, solutions, front door criteria, front door adjustment Category: causal_inference_in_statistics_primer Here are my solutions to question 3.4.1 of Causal Inference in Statistics: … Continue reading →

CIS Primer Question 3.3.1

CIS Primer Question 3.3.1 Posted on 14 February, 2019 by Brian Tags: CISP chapter 3, solutions, backdoor criteria Category: causal_inference_in_statistics_primer Here are my solutions to question 3.3.1 of Causal Inference in Statistics: a Primer (CISP). … Continue reading →

CIS Primer Question 3.3.2

CIS Primer Question 3.3.2 Posted on 14 February, 2019 by Brian Tags: CISP chapter 3, solutions, lord's paradox, simpson's paradox Category: causal_inference_in_statistics_primer Here are my solutions to question 3.3.2 of Causal Inference in Statistics: … Continue reading →

CIS Primer Question 3.3.3

CIS Primer Question 3.3.3 Posted on 14 February, 2019 by Brian Tags: CISP chapter 3, solutions, backdoor criteria Category: causal_inference_in_statistics_primer Here are my solutions to question 3.3.3 of Causal Inference in Statistics: a Primer (CISP). … Continue reading →

CIS Primer Question 3.2.1

CIS Primer Question 3.2.1 Posted on 10 February, 2019 by Brian Tags: CISP chapter 3, solutions, ace, risk difference, simpson's reversal Category: causal_inference_in_statistics_primer Here are my solutions to question 3.2.1 of Causal Inference in … Continue reading →

CIS Primer Question 1.5.2

CIS Primer Question 1.5.2 Posted on 10 February, 2019 by Brian Tags: CISP chapter 1, solutions, simpson's reversal, product decomposition Category: causal_inference_in_statistics_primer Here are my solutions to question 1.5.2 of Causal Inference in … Continue reading →